./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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_50a37610-a305-4735-a63e-15a7a13aee17/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 e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:00:24,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:00:24,264 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 14:00:24,269 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:00:24,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:00:24,293 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:00:24,294 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:00:24,294 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:00:24,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:00:24,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:00:24,296 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:00:24,297 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:00:24,297 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:00:24,298 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:00:24,298 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:00:24,299 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:00:24,300 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:00:24,300 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:00:24,301 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:00:24,301 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:00:24,302 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:00:24,302 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:00:24,303 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 14:00:24,304 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 14:00:24,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:00:24,305 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:00:24,305 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:00:24,306 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:00:24,306 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:00:24,307 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:00:24,307 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:00:24,307 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 14:00:24,308 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 14:00:24,308 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:00:24,308 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:00:24,308 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 14:00:24,309 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:00:24,309 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:00:24,309 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:00:24,309 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:00:24,309 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:00:24,310 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:00:24,310 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:00:24,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:00:24,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:00:24,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:00:24,311 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:00:24,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:00:24,311 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:00:24,311 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:00:24,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:00:24,311 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_50a37610-a305-4735-a63e-15a7a13aee17/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2023-12-02 14:00:24,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:00:24,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:00:24,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:00:24,565 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:00:24,565 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:00:24,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-1.i [2023-12-02 14:00:27,390 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:00:27,647 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:00:27,647 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-1.i [2023-12-02 14:00:27,665 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/data/c8690f093/d8dce1abaad04b11b9be9a18f0ca40fb/FLAG4a55bb8d3 [2023-12-02 14:00:27,680 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/data/c8690f093/d8dce1abaad04b11b9be9a18f0ca40fb [2023-12-02 14:00:27,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:00:27,684 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:00:27,685 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:00:27,685 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:00:27,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:00:27,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:00:27" (1/1) ... [2023-12-02 14:00:27,691 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd93166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:27, skipping insertion in model container [2023-12-02 14:00:27,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:00:27" (1/1) ... [2023-12-02 14:00:27,766 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:00:28,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:00:28,225 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 14:00:28,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6d681080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:28, skipping insertion in model container [2023-12-02 14:00:28,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:00:28,226 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 14:00:28,228 INFO L158 Benchmark]: Toolchain (without parser) took 543.83ms. Allocated memory is still 146.8MB. Free memory was 105.9MB in the beginning and 86.6MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 14:00:28,229 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 104.9MB. Free memory was 56.8MB in the beginning and 56.6MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:00:28,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 541.60ms. Allocated memory is still 146.8MB. Free memory was 105.5MB in the beginning and 86.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 14:00:28,231 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 104.9MB. Free memory was 56.8MB in the beginning and 56.6MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 541.60ms. Allocated memory is still 146.8MB. Free memory was 105.5MB in the beginning and 86.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 817]: 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_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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_50a37610-a305-4735-a63e-15a7a13aee17/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 e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:00:30,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:00:30,095 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 14:00:30,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:00:30,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:00:30,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:00:30,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:00:30,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:00:30,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:00:30,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:00:30,135 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:00:30,135 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:00:30,136 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:00:30,137 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:00:30,137 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:00:30,138 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:00:30,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 14:00:30,139 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 14:00:30,140 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:00:30,140 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:00:30,141 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:00:30,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:00:30,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:00:30,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:00:30,143 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:00:30,143 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 14:00:30,144 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 14:00:30,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:00:30,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:00:30,145 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 14:00:30,146 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 14:00:30,146 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 14:00:30,146 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:00:30,147 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:00:30,147 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:00:30,147 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:00:30,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:00:30,148 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 14:00:30,148 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:00:30,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:00:30,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:00:30,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:00:30,149 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:00:30,149 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 14:00:30,149 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 14:00:30,150 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:00:30,150 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:00:30,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:00:30,150 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_50a37610-a305-4735-a63e-15a7a13aee17/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2023-12-02 14:00:30,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:00:30,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:00:30,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:00:30,484 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:00:30,485 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:00:30,486 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-1.i [2023-12-02 14:00:33,338 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:00:33,650 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:00:33,651 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test2-1.i [2023-12-02 14:00:33,669 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/data/18c6428ed/ea8af6a6d9aa45d184dd794ec2390d28/FLAGd0e7f3e59 [2023-12-02 14:00:33,683 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/data/18c6428ed/ea8af6a6d9aa45d184dd794ec2390d28 [2023-12-02 14:00:33,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:00:33,687 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:00:33,688 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:00:33,689 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:00:33,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:00:33,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:00:33" (1/1) ... [2023-12-02 14:00:33,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601bc072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:33, skipping insertion in model container [2023-12-02 14:00:33,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:00:33" (1/1) ... [2023-12-02 14:00:33,757 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:00:34,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:00:34,255 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 14:00:34,272 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:00:34,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:00:34,382 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:00:34,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:00:34,510 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:00:34,516 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:00:34,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:34 WrapperNode [2023-12-02 14:00:34,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:00:34,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:00:34,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:00:34,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:00:34,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:34" (1/1) ... [2023-12-02 14:00:34,557 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:34" (1/1) ... [2023-12-02 14:00:34,603 INFO L138 Inliner]: procedures = 210, calls = 230, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 867 [2023-12-02 14:00:34,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:00:34,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:00:34,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:00:34,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:00:34,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:34" (1/1) ... [2023-12-02 14:00:34,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:34" (1/1) ... [2023-12-02 14:00:34,626 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:34" (1/1) ... [2023-12-02 14:00:34,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:34" (1/1) ... [2023-12-02 14:00:34,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:34" (1/1) ... [2023-12-02 14:00:34,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:34" (1/1) ... [2023-12-02 14:00:34,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:34" (1/1) ... [2023-12-02 14:00:34,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:34" (1/1) ... [2023-12-02 14:00:34,716 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:00:34,717 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:00:34,717 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:00:34,717 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:00:34,718 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:34" (1/1) ... [2023-12-02 14:00:34,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:00:34,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:00:34,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:00:34,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:00:34,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 14:00:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 14:00:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 14:00:34,783 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 14:00:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:00:34,783 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 14:00:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 14:00:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 14:00:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:00:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 14:00:34,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:00:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:00:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 14:00:34,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:00:34,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:00:34,972 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:00:34,974 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:00:40,913 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:00:40,945 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:00:40,945 INFO L309 CfgBuilder]: Removed 54 assume(true) statements. [2023-12-02 14:00:40,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:00:40 BoogieIcfgContainer [2023-12-02 14:00:40,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:00:40,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:00:40,949 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:00:40,952 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:00:40,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:00:33" (1/3) ... [2023-12-02 14:00:40,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61113d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:00:40, skipping insertion in model container [2023-12-02 14:00:40,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:00:34" (2/3) ... [2023-12-02 14:00:40,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61113d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:00:40, skipping insertion in model container [2023-12-02 14:00:40,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:00:40" (3/3) ... [2023-12-02 14:00:40,956 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test2-1.i [2023-12-02 14:00:40,974 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:00:40,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 14:00:41,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:00:41,027 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;@6141340, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:00:41,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 14:00:41,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 166 states, 159 states have (on average 1.679245283018868) internal successors, (267), 161 states have internal predecessors, (267), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:00:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 14:00:41,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:00:41,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 14:00:41,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:00:41,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:00:41,047 INFO L85 PathProgramCache]: Analyzing trace with hash 697811, now seen corresponding path program 1 times [2023-12-02 14:00:41,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:00:41,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480380370] [2023-12-02 14:00:41,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:00:41,059 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 14:00:41,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:00:41,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:41,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:00:41,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 14:00:41,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:00:41,320 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_23| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_23| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_23|)))) is different from true [2023-12-02 14:00:41,321 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 14:00:41,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:00:41,322 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:00:41,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480380370] [2023-12-02 14:00:41,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480380370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:00:41,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:00:41,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:00:41,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765573743] [2023-12-02 14:00:41,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:00:41,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:00:41,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:00:41,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:00:41,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 14:00:41,361 INFO L87 Difference]: Start difference. First operand has 166 states, 159 states have (on average 1.679245283018868) internal successors, (267), 161 states have internal predecessors, (267), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 14:00:43,599 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 14:00:44,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:00:44,450 INFO L93 Difference]: Finished difference Result 235 states and 303 transitions. [2023-12-02 14:00:44,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:00:44,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-12-02 14:00:44,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:00:44,460 INFO L225 Difference]: With dead ends: 235 [2023-12-02 14:00:44,461 INFO L226 Difference]: Without dead ends: 233 [2023-12-02 14:00:44,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 14:00:44,464 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 89 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:00:44,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 392 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 1 Unknown, 304 Unchecked, 3.0s Time] [2023-12-02 14:00:44,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-02 14:00:44,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 164. [2023-12-02 14:00:44,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 158 states have (on average 1.2911392405063291) internal successors, (204), 159 states have internal predecessors, (204), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:00:44,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 210 transitions. [2023-12-02 14:00:44,508 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 210 transitions. Word has length 3 [2023-12-02 14:00:44,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:00:44,509 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 210 transitions. [2023-12-02 14:00:44,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 14:00:44,509 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 210 transitions. [2023-12-02 14:00:44,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 14:00:44,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:00:44,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:00:44,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:44,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:44,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:00:44,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:00:44,711 INFO L85 PathProgramCache]: Analyzing trace with hash 615838540, now seen corresponding path program 1 times [2023-12-02 14:00:44,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:00:44,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445803449] [2023-12-02 14:00:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:00:44,712 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 14:00:44,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:00:44,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:44,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:00:44,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 14:00:44,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:00:45,007 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_24| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_24| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_24|) (_ bv0 1)))) is different from true [2023-12-02 14:00:45,008 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 14:00:45,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:00:45,008 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:00:45,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445803449] [2023-12-02 14:00:45,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445803449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:00:45,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:00:45,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:00:45,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360325198] [2023-12-02 14:00:45,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:00:45,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:00:45,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:00:45,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:00:45,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 14:00:45,011 INFO L87 Difference]: Start difference. First operand 164 states and 210 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 14:00:47,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:00:48,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:00:48,191 INFO L93 Difference]: Finished difference Result 234 states and 300 transitions. [2023-12-02 14:00:48,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:00:48,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-12-02 14:00:48,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:00:48,193 INFO L225 Difference]: With dead ends: 234 [2023-12-02 14:00:48,193 INFO L226 Difference]: Without dead ends: 232 [2023-12-02 14:00:48,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 14:00:48,195 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 83 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 299 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:00:48,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 392 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 1 Unknown, 299 Unchecked, 3.2s Time] [2023-12-02 14:00:48,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-02 14:00:48,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 229. [2023-12-02 14:00:48,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 223 states have (on average 1.3004484304932735) internal successors, (290), 224 states have internal predecessors, (290), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:00:48,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 296 transitions. [2023-12-02 14:00:48,209 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 296 transitions. Word has length 9 [2023-12-02 14:00:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:00:48,209 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 296 transitions. [2023-12-02 14:00:48,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 14:00:48,210 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 296 transitions. [2023-12-02 14:00:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 14:00:48,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:00:48,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:48,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:48,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:48,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:00:48,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:00:48,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1603213472, now seen corresponding path program 1 times [2023-12-02 14:00:48,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:00:48,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282384295] [2023-12-02 14:00:48,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:00:48,414 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 14:00:48,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:00:48,415 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:48,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:00:48,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:00:48,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:00:48,657 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 14:00:48,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:00:48,658 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:00:48,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282384295] [2023-12-02 14:00:48,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282384295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:00:48,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:00:48,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:00:48,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481273681] [2023-12-02 14:00:48,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:00:48,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:00:48,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:00:48,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:00:48,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:00:48,660 INFO L87 Difference]: Start difference. First operand 229 states and 296 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 14:00:48,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:00:48,821 INFO L93 Difference]: Finished difference Result 237 states and 288 transitions. [2023-12-02 14:00:48,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:00:48,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 48 [2023-12-02 14:00:48,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:00:48,825 INFO L225 Difference]: With dead ends: 237 [2023-12-02 14:00:48,825 INFO L226 Difference]: Without dead ends: 237 [2023-12-02 14:00:48,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 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 14:00:48,827 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 36 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:00:48,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 510 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:00:48,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-02 14:00:48,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2023-12-02 14:00:48,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 229 states have (on average 1.222707423580786) internal successors, (280), 230 states have internal predecessors, (280), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:00:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 286 transitions. [2023-12-02 14:00:48,843 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 286 transitions. Word has length 48 [2023-12-02 14:00:48,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:00:48,843 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 286 transitions. [2023-12-02 14:00:48,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 14:00:48,843 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 286 transitions. [2023-12-02 14:00:48,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 14:00:48,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:00:48,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:48,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:49,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:49,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:00:49,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:00:49,049 INFO L85 PathProgramCache]: Analyzing trace with hash -96637868, now seen corresponding path program 1 times [2023-12-02 14:00:49,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:00:49,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403522028] [2023-12-02 14:00:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:00:49,049 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 14:00:49,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:00:49,050 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:49,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:00:49,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 14:00:49,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:00:49,258 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:00:49,259 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:00:49,259 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:00:49,267 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 14:00:49,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:00:49,355 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 14:00:49,435 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 14:00:49,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:00:49,436 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:00:49,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403522028] [2023-12-02 14:00:49,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403522028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:00:49,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:00:49,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:00:49,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630238192] [2023-12-02 14:00:49,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:00:49,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:00:49,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:00:49,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:00:49,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:00:49,438 INFO L87 Difference]: Start difference. First operand 235 states and 286 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 14:00:54,805 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 14:00:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:00:55,886 INFO L93 Difference]: Finished difference Result 210 states and 260 transitions. [2023-12-02 14:00:55,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:00:55,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 48 [2023-12-02 14:00:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:00:55,889 INFO L225 Difference]: With dead ends: 210 [2023-12-02 14:00:55,889 INFO L226 Difference]: Without dead ends: 207 [2023-12-02 14:00:55,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 14:00:55,890 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 52 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:00:55,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 662 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2023-12-02 14:00:55,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-02 14:00:55,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 169. [2023-12-02 14:00:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 163 states have (on average 1.2331288343558282) internal successors, (201), 164 states have internal predecessors, (201), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:00:55,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 207 transitions. [2023-12-02 14:00:55,899 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 207 transitions. Word has length 48 [2023-12-02 14:00:55,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:00:55,900 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 207 transitions. [2023-12-02 14:00:55,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 14:00:55,900 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 207 transitions. [2023-12-02 14:00:55,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 14:00:55,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:00:55,902 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:00:55,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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)] Forceful destruction successful, exit code 0 [2023-12-02 14:00:56,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:56,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:00:56,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:00:56,104 INFO L85 PathProgramCache]: Analyzing trace with hash -941870148, now seen corresponding path program 1 times [2023-12-02 14:00:56,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:00:56,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848518180] [2023-12-02 14:00:56,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:00:56,105 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 14:00:56,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:00:56,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:56,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:00:56,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:00:56,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:00:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:00:56,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:00:56,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:00:56,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848518180] [2023-12-02 14:00:56,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848518180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:00:56,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:00:56,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:00:56,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228952675] [2023-12-02 14:00:56,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:00:56,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:00:56,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:00:56,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:00:56,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:00:56,516 INFO L87 Difference]: Start difference. First operand 169 states and 207 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 14:00:56,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:00:56,647 INFO L93 Difference]: Finished difference Result 173 states and 203 transitions. [2023-12-02 14:00:56,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:00:56,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2023-12-02 14:00:56,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:00:56,650 INFO L225 Difference]: With dead ends: 173 [2023-12-02 14:00:56,651 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 14:00:56,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 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 14:00:56,651 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 43 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:00:56,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 474 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:00:56,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 14:00:56,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2023-12-02 14:00:56,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 166 states have (on average 1.180722891566265) internal successors, (196), 167 states have internal predecessors, (196), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:00:56,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 202 transitions. [2023-12-02 14:00:56,660 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 202 transitions. Word has length 65 [2023-12-02 14:00:56,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:00:56,661 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 202 transitions. [2023-12-02 14:00:56,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 14:00:56,661 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 202 transitions. [2023-12-02 14:00:56,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 14:00:56,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:00:56,663 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:00:56,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:56,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:56,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:00:56,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:00:56,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1119088084, now seen corresponding path program 1 times [2023-12-02 14:00:56,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:00:56,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079820180] [2023-12-02 14:00:56,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:00:56,870 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 14:00:56,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:00:56,870 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:56,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:00:57,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:00:57,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:00:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:00:57,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:00:57,307 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:00:57,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079820180] [2023-12-02 14:00:57,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079820180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:00:57,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:00:57,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:00:57,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874115000] [2023-12-02 14:00:57,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:00:57,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:00:57,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:00:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:00:57,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:00:57,309 INFO L87 Difference]: Start difference. First operand 172 states and 202 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 14:00:57,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:00:57,421 INFO L93 Difference]: Finished difference Result 166 states and 192 transitions. [2023-12-02 14:00:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:00:57,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2023-12-02 14:00:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:00:57,425 INFO L225 Difference]: With dead ends: 166 [2023-12-02 14:00:57,425 INFO L226 Difference]: Without dead ends: 166 [2023-12-02 14:00:57,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:00:57,426 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 12 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:00:57,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 477 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:00:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-02 14:00:57,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-12-02 14:00:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 160 states have (on average 1.1625) internal successors, (186), 161 states have internal predecessors, (186), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:00:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 192 transitions. [2023-12-02 14:00:57,432 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 192 transitions. Word has length 65 [2023-12-02 14:00:57,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:00:57,432 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 192 transitions. [2023-12-02 14:00:57,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 14:00:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 192 transitions. [2023-12-02 14:00:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 14:00:57,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:00:57,434 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:00:57,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:57,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:57,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:00:57,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:00:57,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1746345998, now seen corresponding path program 1 times [2023-12-02 14:00:57,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:00:57,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438258693] [2023-12-02 14:00:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:00:57,642 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 14:00:57,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:00:57,642 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:57,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 14:00:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:00:57,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:00:57,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:00:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:00:58,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:00:58,252 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:00:58,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438258693] [2023-12-02 14:00:58,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438258693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:00:58,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:00:58,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:00:58,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931067953] [2023-12-02 14:00:58,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:00:58,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:00:58,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:00:58,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:00:58,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:00:58,255 INFO L87 Difference]: Start difference. First operand 166 states and 192 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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 14:00:58,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:00:58,744 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2023-12-02 14:00:58,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:00:58,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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 65 [2023-12-02 14:00:58,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:00:58,746 INFO L225 Difference]: With dead ends: 256 [2023-12-02 14:00:58,746 INFO L226 Difference]: Without dead ends: 256 [2023-12-02 14:00:58,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 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 14:00:58,747 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 58 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:00:58,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 381 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 14:00:58,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-02 14:00:58,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 250. [2023-12-02 14:00:58,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 244 states have (on average 1.1311475409836065) internal successors, (276), 245 states have internal predecessors, (276), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:00:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 282 transitions. [2023-12-02 14:00:58,753 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 282 transitions. Word has length 65 [2023-12-02 14:00:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:00:58,754 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 282 transitions. [2023-12-02 14:00:58,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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 14:00:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 282 transitions. [2023-12-02 14:00:58,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 14:00:58,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:00:58,755 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] [2023-12-02 14:00:58,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-02 14:00:58,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:58,956 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:00:58,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:00:58,956 INFO L85 PathProgramCache]: Analyzing trace with hash -628240215, now seen corresponding path program 1 times [2023-12-02 14:00:58,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:00:58,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015521512] [2023-12-02 14:00:58,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:00:58,957 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 14:00:58,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:00:58,958 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:58,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:00:59,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:00:59,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:00:59,427 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 14:00:59,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:00:59,427 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:00:59,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015521512] [2023-12-02 14:00:59,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015521512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:00:59,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:00:59,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:00:59,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039459009] [2023-12-02 14:00:59,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:00:59,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:00:59,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:00:59,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:00:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:00:59,430 INFO L87 Difference]: Start difference. First operand 250 states and 282 transitions. Second operand has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 4 states have internal predecessors, (74), 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 14:00:59,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:00:59,493 INFO L93 Difference]: Finished difference Result 252 states and 285 transitions. [2023-12-02 14:00:59,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:00:59,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 4 states have internal predecessors, (74), 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 78 [2023-12-02 14:00:59,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:00:59,497 INFO L225 Difference]: With dead ends: 252 [2023-12-02 14:00:59,497 INFO L226 Difference]: Without dead ends: 252 [2023-12-02 14:00:59,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 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 14:00:59,498 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:00:59,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 533 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:00:59,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-02 14:00:59,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2023-12-02 14:00:59,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 245 states have (on average 1.1346938775510205) internal successors, (278), 247 states have internal predecessors, (278), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:00:59,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 285 transitions. [2023-12-02 14:00:59,506 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 285 transitions. Word has length 78 [2023-12-02 14:00:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:00:59,507 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 285 transitions. [2023-12-02 14:00:59,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 4 states have internal predecessors, (74), 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 14:00:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 285 transitions. [2023-12-02 14:00:59,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 14:00:59,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:00:59,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:00:59,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 14:00:59,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:59,712 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:00:59,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:00:59,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1386620087, now seen corresponding path program 1 times [2023-12-02 14:00:59,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:00:59,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780528291] [2023-12-02 14:00:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:00:59,713 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 14:00:59,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:00:59,714 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:00:59,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 (10)] Waiting until timeout for monitored process [2023-12-02 14:01:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:01:00,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:01:00,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:00,209 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 14:01:00,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:01:00,294 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 14:01:00,294 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:01:00,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780528291] [2023-12-02 14:01:00,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780528291] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:01:00,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [474555565] [2023-12-02 14:01:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:01:00,295 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:01:00,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:01:00,298 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:01:00,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-02 14:01:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:01:01,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:01:01,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:01,020 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 14:01:01,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:01:01,056 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 14:01:01,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [474555565] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:01:01,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725513427] [2023-12-02 14:01:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:01:01,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:01:01,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:01:01,058 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:01:01,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 14:01:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:01:01,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:01:01,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:01,516 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 14:01:01,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:01:01,600 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 14:01:01,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725513427] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:01:01,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 14:01:01,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-12-02 14:01:01,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118491794] [2023-12-02 14:01:01,601 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 14:01:01,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 14:01:01,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:01:01,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 14:01:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:01:01,603 INFO L87 Difference]: Start difference. First operand 252 states and 285 transitions. Second operand has 11 states, 8 states have (on average 10.875) internal successors, (87), 11 states have internal predecessors, (87), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 14:01:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:01:01,958 INFO L93 Difference]: Finished difference Result 264 states and 304 transitions. [2023-12-02 14:01:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 14:01:01,959 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 10.875) internal successors, (87), 11 states have internal predecessors, (87), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2023-12-02 14:01:01,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:01:01,961 INFO L225 Difference]: With dead ends: 264 [2023-12-02 14:01:01,961 INFO L226 Difference]: Without dead ends: 264 [2023-12-02 14:01:01,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-12-02 14:01:01,961 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 17 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:01:01,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1045 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:01:01,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-02 14:01:01,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2023-12-02 14:01:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 254 states have (on average 1.1614173228346456) internal successors, (295), 256 states have internal predecessors, (295), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:01:01,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 302 transitions. [2023-12-02 14:01:01,968 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 302 transitions. Word has length 80 [2023-12-02 14:01:01,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:01:01,968 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 302 transitions. [2023-12-02 14:01:01,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 10.875) internal successors, (87), 11 states have internal predecessors, (87), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 14:01:01,968 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 302 transitions. [2023-12-02 14:01:01,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 14:01:01,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:01:01,969 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] [2023-12-02 14:01:01,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 (10)] Ended with exit code 0 [2023-12-02 14:01:02,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 14:01:02,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-02 14:01:02,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 14:01:02,570 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:01:02,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:01:02,570 INFO L85 PathProgramCache]: Analyzing trace with hash 106493353, now seen corresponding path program 2 times [2023-12-02 14:01:02,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:01:02,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711407121] [2023-12-02 14:01:02,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:01:02,571 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 14:01:02,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:01:02,572 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:01:02,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 14:01:03,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:01:03,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:01:03,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:01:03,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:03,237 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 14:01:03,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:01:03,438 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 14:01:03,439 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:01:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711407121] [2023-12-02 14:01:03,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711407121] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:01:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [155251450] [2023-12-02 14:01:03,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:01:03,439 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:01:03,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:01:03,440 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:01:03,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-02 14:01:04,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:01:04,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:01:04,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 14:01:04,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:04,878 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:01:04,879 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:01:04,879 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:01:04,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2023-12-02 14:01:04,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:01:04,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 26 [2023-12-02 14:01:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 14:01:05,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:01:05,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [155251450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:01:05,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:01:05,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 19 [2023-12-02 14:01:05,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216711925] [2023-12-02 14:01:05,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:01:05,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:01:05,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:01:05,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:01:05,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-12-02 14:01:05,020 INFO L87 Difference]: Start difference. First operand 262 states and 302 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 14:01:07,814 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 14:01:09,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:01:09,247 INFO L93 Difference]: Finished difference Result 336 states and 388 transitions. [2023-12-02 14:01:09,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:01:09,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 86 [2023-12-02 14:01:09,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:01:09,250 INFO L225 Difference]: With dead ends: 336 [2023-12-02 14:01:09,251 INFO L226 Difference]: Without dead ends: 336 [2023-12-02 14:01:09,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-12-02 14:01:09,252 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 543 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:01:09,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 445 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-02 14:01:09,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-02 14:01:09,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 264. [2023-12-02 14:01:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 256 states have (on average 1.16015625) internal successors, (297), 258 states have internal predecessors, (297), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:01:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 304 transitions. [2023-12-02 14:01:09,263 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 304 transitions. Word has length 86 [2023-12-02 14:01:09,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:01:09,264 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 304 transitions. [2023-12-02 14:01:09,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 14:01:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 304 transitions. [2023-12-02 14:01:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 14:01:09,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:01:09,266 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] [2023-12-02 14:01:09,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-02 14:01:09,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 14:01:09,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:01:09,667 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:01:09,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:01:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash 702262103, now seen corresponding path program 1 times [2023-12-02 14:01:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:01:09,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20664960] [2023-12-02 14:01:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:01:09,669 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 14:01:09,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:01:09,670 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:01:09,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:01:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:01:10,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:01:10,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:10,277 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 14:01:10,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:01:10,434 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 14:01:10,434 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:01:10,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20664960] [2023-12-02 14:01:10,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20664960] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:01:10,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1842898418] [2023-12-02 14:01:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:01:10,435 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:01:10,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:01:10,435 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:01:10,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-02 14:01:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:01:11,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:01:11,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 14:01:11,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:01:11,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1842898418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:01:11,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:01:11,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 8] total 16 [2023-12-02 14:01:11,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724295694] [2023-12-02 14:01:11,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:01:11,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:01:11,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:01:11,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:01:11,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-02 14:01:11,273 INFO L87 Difference]: Start difference. First operand 264 states and 304 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 14:01:14,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:01:16,222 WARN L539 Checker$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 14:01:18,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:01:18,195 INFO L93 Difference]: Finished difference Result 216 states and 248 transitions. [2023-12-02 14:01:18,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:01:18,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 125 [2023-12-02 14:01:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:01:18,200 INFO L225 Difference]: With dead ends: 216 [2023-12-02 14:01:18,200 INFO L226 Difference]: Without dead ends: 216 [2023-12-02 14:01:18,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-12-02 14:01:18,201 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 239 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:01:18,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 228 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2023-12-02 14:01:18,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-12-02 14:01:18,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-12-02 14:01:18,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 208 states have (on average 1.1586538461538463) internal successors, (241), 210 states have internal predecessors, (241), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:01:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 248 transitions. [2023-12-02 14:01:18,208 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 248 transitions. Word has length 125 [2023-12-02 14:01:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:01:18,209 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 248 transitions. [2023-12-02 14:01:18,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 14:01:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 248 transitions. [2023-12-02 14:01:18,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-02 14:01:18,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:01:18,210 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, 1] [2023-12-02 14:01:18,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2023-12-02 14:01:18,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:01:18,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:01:18,611 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:01:18,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:01:18,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2062604577, now seen corresponding path program 1 times [2023-12-02 14:01:18,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:01:18,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194539558] [2023-12-02 14:01:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:01:18,612 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 14:01:18,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:01:18,613 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:01:18,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:01:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:01:19,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:01:19,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 14:01:19,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:01:19,418 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 14:01:19,418 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:01:19,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194539558] [2023-12-02 14:01:19,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194539558] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:01:19,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1496852379] [2023-12-02 14:01:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:01:19,419 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:01:19,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:01:19,420 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:01:19,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-02 14:01:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:01:20,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:01:20,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:20,313 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 14:01:20,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:01:20,377 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 14:01:20,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1496852379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:01:20,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515323691] [2023-12-02 14:01:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:01:20,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:01:20,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:01:20,378 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:01:20,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 14:01:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:01:20,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 14:01:20,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:21,005 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 14:01:21,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:01:21,263 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 14:01:21,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515323691] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:01:21,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 14:01:21,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2023-12-02 14:01:21,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339543784] [2023-12-02 14:01:21,264 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 14:01:21,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 14:01:21,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:01:21,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 14:01:21,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2023-12-02 14:01:21,267 INFO L87 Difference]: Start difference. First operand 216 states and 248 transitions. Second operand has 20 states, 17 states have (on average 8.352941176470589) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 14:01:22,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:01:22,078 INFO L93 Difference]: Finished difference Result 229 states and 265 transitions. [2023-12-02 14:01:22,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 14:01:22,079 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.352941176470589) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 133 [2023-12-02 14:01:22,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:01:22,081 INFO L225 Difference]: With dead ends: 229 [2023-12-02 14:01:22,081 INFO L226 Difference]: Without dead ends: 226 [2023-12-02 14:01:22,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 14:01:22,082 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 14 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:01:22,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1567 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 14:01:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-02 14:01:22,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 223. [2023-12-02 14:01:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 215 states have (on average 1.1534883720930234) internal successors, (248), 217 states have internal predecessors, (248), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:01:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 255 transitions. [2023-12-02 14:01:22,088 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 255 transitions. Word has length 133 [2023-12-02 14:01:22,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:01:22,088 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 255 transitions. [2023-12-02 14:01:22,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.352941176470589) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 14:01:22,089 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 255 transitions. [2023-12-02 14:01:22,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 14:01:22,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:01:22,090 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, 1] [2023-12-02 14:01:22,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-02 14:01:22,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:01:22,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-12-02 14:01:22,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 14:01:22,691 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:01:22,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:01:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1324466201, now seen corresponding path program 2 times [2023-12-02 14:01:22,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:01:22,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12973275] [2023-12-02 14:01:22,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:01:22,692 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 14:01:22,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:01:22,693 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:01:22,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-02 14:01:23,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:01:23,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:01:23,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 14:01:23,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:23,547 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 70 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 14:01:23,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:01:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 122 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 14:01:24,085 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:01:24,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12973275] [2023-12-02 14:01:24,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12973275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:01:24,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [898248956] [2023-12-02 14:01:24,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:01:24,086 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:01:24,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:01:24,086 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:01:24,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-02 14:01:25,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:01:25,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:01:25,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 14:01:25,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 70 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 14:01:25,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:01:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 122 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 14:01:25,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [898248956] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:01:25,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223371910] [2023-12-02 14:01:25,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:01:25,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:01:25,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:01:26,000 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:01:26,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 14:01:26,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:01:26,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:01:26,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 14:01:26,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:26,775 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 14:01:26,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:01:27,212 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 14:01:27,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223371910] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:01:27,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 14:01:27,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 9, 9] total 35 [2023-12-02 14:01:27,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978974136] [2023-12-02 14:01:27,213 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 14:01:27,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 14:01:27,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:01:27,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 14:01:27,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=862, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 14:01:27,216 INFO L87 Difference]: Start difference. First operand 223 states and 255 transitions. Second operand has 35 states, 31 states have (on average 5.096774193548387) internal successors, (158), 35 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 14:01:30,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:01:30,552 INFO L93 Difference]: Finished difference Result 259 states and 312 transitions. [2023-12-02 14:01:30,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-02 14:01:30,553 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 5.096774193548387) internal successors, (158), 35 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 140 [2023-12-02 14:01:30,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:01:30,554 INFO L225 Difference]: With dead ends: 259 [2023-12-02 14:01:30,554 INFO L226 Difference]: Without dead ends: 256 [2023-12-02 14:01:30,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 801 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1869, Invalid=5441, Unknown=0, NotChecked=0, Total=7310 [2023-12-02 14:01:30,557 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 59 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:01:30,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 3625 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 14:01:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-02 14:01:30,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 247. [2023-12-02 14:01:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 239 states have (on average 1.1841004184100419) internal successors, (283), 241 states have internal predecessors, (283), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:01:30,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 290 transitions. [2023-12-02 14:01:30,563 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 290 transitions. Word has length 140 [2023-12-02 14:01:30,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:01:30,563 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 290 transitions. [2023-12-02 14:01:30,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 5.096774193548387) internal successors, (158), 35 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 14:01:30,563 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 290 transitions. [2023-12-02 14:01:30,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-02 14:01:30,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:01:30,565 INFO L195 NwaCegarLoop]: trace histogram [39, 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, 1] [2023-12-02 14:01:30,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-02 14:01:30,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-12-02 14:01:30,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-02 14:01:31,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:01:31,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:01:31,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:01:31,166 INFO L85 PathProgramCache]: Analyzing trace with hash 2071359207, now seen corresponding path program 3 times [2023-12-02 14:01:31,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:01:31,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401410180] [2023-12-02 14:01:31,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:01:31,167 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 14:01:31,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:01:31,168 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/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 14:01:31,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-02 14:01:37,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-02 14:01:37,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:01:37,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 14:01:37,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:01:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 14:01:38,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:01:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 14:01:39,836 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:01:39,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401410180] [2023-12-02 14:01:39,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401410180] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:01:39,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [853594023] [2023-12-02 14:01:39,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:01:39,836 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:01:39,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:01:39,837 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:01:39,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-02 14:05:16,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-02 14:05:16,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:05:16,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 14:05:16,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:05:16,393 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 14:05:16,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:05:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 14:05:16,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [853594023] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:05:16,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016479261] [2023-12-02 14:05:16,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:05:16,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:05:16,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:05:16,661 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:05:16,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a37610-a305-4735-a63e-15a7a13aee17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process