./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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_2959fa26-1075-4479-9305-24381d594d73/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 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:04:48,644 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:04:48,709 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 15:04:48,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:04:48,715 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:04:48,738 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:04:48,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:04:48,739 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:04:48,739 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:04:48,740 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:04:48,740 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:04:48,741 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:04:48,741 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:04:48,742 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:04:48,743 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:04:48,743 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:04:48,744 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:04:48,744 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:04:48,745 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:04:48,745 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:04:48,746 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:04:48,746 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:04:48,747 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 15:04:48,748 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 15:04:48,748 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:04:48,749 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:04:48,749 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:04:48,749 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:04:48,750 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:04:48,750 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:04:48,751 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:04:48,751 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 15:04:48,751 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 15:04:48,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:04:48,752 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:04:48,752 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:04:48,752 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:04:48,753 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:04:48,753 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:04:48,753 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:04:48,753 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:04:48,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:04:48,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:04:48,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:04:48,754 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:04:48,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:04:48,755 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:04:48,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:04:48,755 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:04:48,755 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:04:48,755 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:04:48,756 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_2959fa26-1075-4479-9305-24381d594d73/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c [2023-12-02 15:04:48,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:04:48,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:04:48,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:04:48,993 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:04:48,994 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:04:48,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2023-12-02 15:04:51,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:04:51,983 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:04:51,983 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2023-12-02 15:04:52,001 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/data/6514b1ab7/1aaffceee59349da88d020ce57718864/FLAG639431a62 [2023-12-02 15:04:52,015 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/data/6514b1ab7/1aaffceee59349da88d020ce57718864 [2023-12-02 15:04:52,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:04:52,019 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:04:52,020 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:04:52,020 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:04:52,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:04:52,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:04:52" (1/1) ... [2023-12-02 15:04:52,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b731fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:52, skipping insertion in model container [2023-12-02 15:04:52,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:04:52" (1/1) ... [2023-12-02 15:04:52,088 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:04:52,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:04:52,525 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 15:04:52,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b3b7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:52, skipping insertion in model container [2023-12-02 15:04:52,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:04:52,526 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 15:04:52,528 INFO L158 Benchmark]: Toolchain (without parser) took 508.47ms. Allocated memory is still 153.1MB. Free memory was 114.9MB in the beginning and 95.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 15:04:52,529 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 123.7MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:04:52,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.13ms. Allocated memory is still 153.1MB. Free memory was 114.9MB in the beginning and 95.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 15:04:52,531 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 123.7MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 506.13ms. Allocated memory is still 153.1MB. Free memory was 114.9MB in the beginning and 95.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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_2959fa26-1075-4479-9305-24381d594d73/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 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:04:54,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:04:54,310 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 15:04:54,315 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:04:54,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:04:54,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:04:54,341 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:04:54,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:04:54,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:04:54,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:04:54,344 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:04:54,344 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:04:54,345 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:04:54,345 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:04:54,346 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:04:54,346 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:04:54,347 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 15:04:54,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 15:04:54,349 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:04:54,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:04:54,350 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:04:54,352 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:04:54,352 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:04:54,353 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:04:54,353 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:04:54,354 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 15:04:54,354 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 15:04:54,354 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:04:54,354 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:04:54,355 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:04:54,355 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:04:54,356 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:04:54,356 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:04:54,356 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:04:54,357 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:04:54,357 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:04:54,357 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:04:54,357 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:04:54,357 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:04:54,358 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:04:54,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:04:54,358 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:04:54,358 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:04:54,359 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:04:54,359 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:04:54,359 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:04:54,359 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:04:54,359 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:04:54,360 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_2959fa26-1075-4479-9305-24381d594d73/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c [2023-12-02 15:04:54,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:04:54,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:04:54,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:04:54,672 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:04:54,672 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:04:54,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2023-12-02 15:04:57,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:04:57,669 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:04:57,670 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2023-12-02 15:04:57,687 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/data/3979e690f/2796b1904b5540bb9e127d0d856352b9/FLAGbb410d8c7 [2023-12-02 15:04:57,699 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/data/3979e690f/2796b1904b5540bb9e127d0d856352b9 [2023-12-02 15:04:57,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:04:57,702 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:04:57,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:04:57,704 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:04:57,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:04:57,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:04:57" (1/1) ... [2023-12-02 15:04:57,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c52125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:57, skipping insertion in model container [2023-12-02 15:04:57,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:04:57" (1/1) ... [2023-12-02 15:04:57,772 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:04:58,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:04:58,215 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 15:04:58,227 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:04:58,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:04:58,306 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:04:58,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:04:58,415 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:04:58,423 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:04:58,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:58 WrapperNode [2023-12-02 15:04:58,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:04:58,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:04:58,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:04:58,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:04:58,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:58" (1/1) ... [2023-12-02 15:04:58,462 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:58" (1/1) ... [2023-12-02 15:04:58,509 INFO L138 Inliner]: procedures = 180, calls = 287, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1032 [2023-12-02 15:04:58,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:04:58,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:04:58,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:04:58,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:04:58,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:58" (1/1) ... [2023-12-02 15:04:58,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:58" (1/1) ... [2023-12-02 15:04:58,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:58" (1/1) ... [2023-12-02 15:04:58,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:58" (1/1) ... [2023-12-02 15:04:58,567 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:58" (1/1) ... [2023-12-02 15:04:58,576 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:58" (1/1) ... [2023-12-02 15:04:58,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:58" (1/1) ... [2023-12-02 15:04:58,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:58" (1/1) ... [2023-12-02 15:04:58,596 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:04:58,597 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:04:58,597 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:04:58,597 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:04:58,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:58" (1/1) ... [2023-12-02 15:04:58,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:04:58,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:04:58,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:04:58,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:04:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 15:04:58,678 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 15:04:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 15:04:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 15:04:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 15:04:58,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 15:04:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 15:04:58,679 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 15:04:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:04:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:04:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:04:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:04:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 15:04:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:04:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:04:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 15:04:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:04:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:04:58,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:04:58,880 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:04:58,882 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:05:04,821 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:05:04,858 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:05:04,858 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-12-02 15:05:04,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:05:04 BoogieIcfgContainer [2023-12-02 15:05:04,859 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:05:04,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:05:04,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:05:04,866 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:05:04,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:04:57" (1/3) ... [2023-12-02 15:05:04,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541194fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:05:04, skipping insertion in model container [2023-12-02 15:05:04,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:58" (2/3) ... [2023-12-02 15:05:04,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541194fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:05:04, skipping insertion in model container [2023-12-02 15:05:04,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:05:04" (3/3) ... [2023-12-02 15:05:04,869 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-1.i [2023-12-02 15:05:04,887 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:05:04,887 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 15:05:04,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:05:04,942 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;@64f5c4a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:05:04,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 15:05:04,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 208 states, 192 states have (on average 1.6822916666666667) internal successors, (323), 201 states have internal predecessors, (323), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 15:05:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 15:05:04,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:04,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:04,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:05:04,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:04,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1413219959, now seen corresponding path program 1 times [2023-12-02 15:05:04,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:05:04,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679126624] [2023-12-02 15:05:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:04,971 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 15:05:04,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:05:05,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:05,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:05,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 15:05:05,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:05,215 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 15:05:05,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:05:05,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:05:05,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679126624] [2023-12-02 15:05:05,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679126624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:05:05,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:05:05,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:05:05,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336201951] [2023-12-02 15:05:05,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:05:05,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:05:05,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:05:05,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:05:05,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:05:05,256 INFO L87 Difference]: Start difference. First operand has 208 states, 192 states have (on average 1.6822916666666667) internal successors, (323), 201 states have internal predecessors, (323), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:05:05,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:05,300 INFO L93 Difference]: Finished difference Result 206 states and 271 transitions. [2023-12-02 15:05:05,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:05:05,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 15:05:05,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:05,313 INFO L225 Difference]: With dead ends: 206 [2023-12-02 15:05:05,313 INFO L226 Difference]: Without dead ends: 205 [2023-12-02 15:05:05,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:05:05,318 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:05:05,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 267 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:05:05,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-02 15:05:05,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2023-12-02 15:05:05,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 191 states have (on average 1.3193717277486912) internal successors, (252), 198 states have internal predecessors, (252), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:05:05,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 270 transitions. [2023-12-02 15:05:05,371 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 270 transitions. Word has length 8 [2023-12-02 15:05:05,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:05,371 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 270 transitions. [2023-12-02 15:05:05,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:05:05,372 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 270 transitions. [2023-12-02 15:05:05,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 15:05:05,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:05,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:05,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:05,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:05,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:05:05,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:05,574 INFO L85 PathProgramCache]: Analyzing trace with hash -896054892, now seen corresponding path program 1 times [2023-12-02 15:05:05,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:05:05,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871056391] [2023-12-02 15:05:05,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:05,575 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 15:05:05,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:05:05,577 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:05,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:05,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:05:05,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:05,779 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:05:05,780 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:05:05,781 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:05:05,791 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 15:05:05,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:05:05,870 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 15:05:05,888 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 15:05:05,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:05:05,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:05:05,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871056391] [2023-12-02 15:05:05,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871056391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:05:05,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:05:05,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:05:05,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811958097] [2023-12-02 15:05:05,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:05:05,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:05:05,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:05:05,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:05:05,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:05:05,892 INFO L87 Difference]: Start difference. First operand 205 states and 270 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:05:07,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:05:10,852 WARN L539 Checker$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 15:05:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:13,663 INFO L93 Difference]: Finished difference Result 337 states and 451 transitions. [2023-12-02 15:05:13,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:05:13,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 15:05:13,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:13,667 INFO L225 Difference]: With dead ends: 337 [2023-12-02 15:05:13,667 INFO L226 Difference]: Without dead ends: 337 [2023-12-02 15:05:13,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:05:13,669 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 162 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:05:13,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 661 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 177 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2023-12-02 15:05:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-12-02 15:05:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 207. [2023-12-02 15:05:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 193 states have (on average 1.3160621761658031) internal successors, (254), 200 states have internal predecessors, (254), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:05:13,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 272 transitions. [2023-12-02 15:05:13,687 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 272 transitions. Word has length 10 [2023-12-02 15:05:13,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:13,688 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 272 transitions. [2023-12-02 15:05:13,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:05:13,688 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 272 transitions. [2023-12-02 15:05:13,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-02 15:05:13,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:13,691 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:13,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:13,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:13,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:05:13,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:13,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1043928506, now seen corresponding path program 1 times [2023-12-02 15:05:13,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:05:13,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583478911] [2023-12-02 15:05:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:13,894 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 15:05:13,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:05:13,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:13,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:14,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:05:14,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:14,327 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 15:05:14,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:05:14,328 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:05:14,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583478911] [2023-12-02 15:05:14,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583478911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:05:14,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:05:14,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:05:14,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42105116] [2023-12-02 15:05:14,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:05:14,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:05:14,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:05:14,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:05:14,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:05:14,331 INFO L87 Difference]: Start difference. First operand 207 states and 272 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:05:14,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:14,465 INFO L93 Difference]: Finished difference Result 211 states and 268 transitions. [2023-12-02 15:05:14,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:05:14,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-02 15:05:14,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:14,468 INFO L225 Difference]: With dead ends: 211 [2023-12-02 15:05:14,468 INFO L226 Difference]: Without dead ends: 211 [2023-12-02 15:05:14,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:05:14,469 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 36 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 690 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 15:05:14,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 690 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:05:14,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-02 15:05:14,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2023-12-02 15:05:14,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 196 states have (on average 1.2704081632653061) internal successors, (249), 203 states have internal predecessors, (249), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:05:14,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 267 transitions. [2023-12-02 15:05:14,482 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 267 transitions. Word has length 66 [2023-12-02 15:05:14,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:14,483 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 267 transitions. [2023-12-02 15:05:14,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:05:14,483 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 267 transitions. [2023-12-02 15:05:14,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-02 15:05:14,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:14,486 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:14,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:14,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:14,688 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:05:14,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:14,689 INFO L85 PathProgramCache]: Analyzing trace with hash 819799226, now seen corresponding path program 1 times [2023-12-02 15:05:14,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:05:14,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446488972] [2023-12-02 15:05:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:14,690 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 15:05:14,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:05:14,692 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:14,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:15,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:05:15,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:15,382 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 15:05:15,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:05:15,382 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:05:15,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446488972] [2023-12-02 15:05:15,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446488972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:05:15,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:05:15,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:05:15,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089602740] [2023-12-02 15:05:15,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:05:15,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:05:15,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:05:15,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:05:15,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:05:15,385 INFO L87 Difference]: Start difference. First operand 210 states and 267 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:05:16,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:16,209 INFO L93 Difference]: Finished difference Result 336 states and 429 transitions. [2023-12-02 15:05:16,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:05:16,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-02 15:05:16,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:16,212 INFO L225 Difference]: With dead ends: 336 [2023-12-02 15:05:16,212 INFO L226 Difference]: Without dead ends: 336 [2023-12-02 15:05:16,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:05:16,214 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 113 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:05:16,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 550 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:05:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-02 15:05:16,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 318. [2023-12-02 15:05:16,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 304 states have (on average 1.2598684210526316) internal successors, (383), 311 states have internal predecessors, (383), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:05:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 401 transitions. [2023-12-02 15:05:16,229 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 401 transitions. Word has length 66 [2023-12-02 15:05:16,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:16,230 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 401 transitions. [2023-12-02 15:05:16,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:05:16,230 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 401 transitions. [2023-12-02 15:05:16,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 15:05:16,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:16,233 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:16,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 15:05:16,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:16,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:05:16,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1510710663, now seen corresponding path program 1 times [2023-12-02 15:05:16,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:05:16,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448095063] [2023-12-02 15:05:16,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:16,436 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 15:05:16,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:05:16,437 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:16,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:16,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:05:16,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:16,949 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 15:05:16,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:05:16,950 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:05:16,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448095063] [2023-12-02 15:05:16,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448095063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:05:16,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:05:16,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:05:16,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504807846] [2023-12-02 15:05:16,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:05:16,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:05:16,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:05:16,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:05:16,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:05:16,953 INFO L87 Difference]: Start difference. First operand 318 states and 401 transitions. Second operand has 4 states, 3 states have (on average 25.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:05:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:17,035 INFO L93 Difference]: Finished difference Result 320 states and 404 transitions. [2023-12-02 15:05:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:05:17,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 79 [2023-12-02 15:05:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:17,038 INFO L225 Difference]: With dead ends: 320 [2023-12-02 15:05:17,038 INFO L226 Difference]: Without dead ends: 320 [2023-12-02 15:05:17,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:05:17,039 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 758 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 15:05:17,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 758 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:05:17,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-12-02 15:05:17,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2023-12-02 15:05:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 305 states have (on average 1.2622950819672132) internal successors, (385), 313 states have internal predecessors, (385), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:05:17,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 404 transitions. [2023-12-02 15:05:17,050 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 404 transitions. Word has length 79 [2023-12-02 15:05:17,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:17,051 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 404 transitions. [2023-12-02 15:05:17,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:05:17,051 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 404 transitions. [2023-12-02 15:05:17,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 15:05:17,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:17,053 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:17,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:17,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:17,256 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:05:17,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:17,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1733402191, now seen corresponding path program 1 times [2023-12-02 15:05:17,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:05:17,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459190011] [2023-12-02 15:05:17,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:17,257 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 15:05:17,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:05:17,258 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:17,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:17,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:05:17,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:17,783 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 15:05:17,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:05:17,884 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 15:05:17,884 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:05:17,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459190011] [2023-12-02 15:05:17,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459190011] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:05:17,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [674479381] [2023-12-02 15:05:17,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:17,885 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:05:17,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:05:17,887 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:05:17,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 15:05:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:18,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:05:18,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:05:18,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:05:18,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [674479381] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:05:18,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:05:18,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 15:05:18,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440191589] [2023-12-02 15:05:18,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:05:18,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:05:18,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:05:18,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:05:18,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:05:18,705 INFO L87 Difference]: Start difference. First operand 320 states and 404 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:05:21,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:05:23,307 WARN L539 Checker$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 15:05:24,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:24,799 INFO L93 Difference]: Finished difference Result 433 states and 564 transitions. [2023-12-02 15:05:24,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:05:24,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2023-12-02 15:05:24,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:24,802 INFO L225 Difference]: With dead ends: 433 [2023-12-02 15:05:24,802 INFO L226 Difference]: Without dead ends: 433 [2023-12-02 15:05:24,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:05:24,803 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 501 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:05:24,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 473 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 84 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2023-12-02 15:05:24,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-12-02 15:05:24,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 405. [2023-12-02 15:05:24,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 390 states have (on average 1.2743589743589743) internal successors, (497), 398 states have internal predecessors, (497), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:05:24,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 516 transitions. [2023-12-02 15:05:24,818 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 516 transitions. Word has length 81 [2023-12-02 15:05:24,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:24,818 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 516 transitions. [2023-12-02 15:05:24,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:05:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 516 transitions. [2023-12-02 15:05:24,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 15:05:24,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:24,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:24,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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)] Forceful destruction successful, exit code 0 [2023-12-02 15:05:25,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-02 15:05:25,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:05:25,229 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:05:25,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:25,229 INFO L85 PathProgramCache]: Analyzing trace with hash -739833239, now seen corresponding path program 1 times [2023-12-02 15:05:25,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:05:25,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352810998] [2023-12-02 15:05:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:25,230 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 15:05:25,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:05:25,231 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:25,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:25,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:05:25,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:25,743 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 15:05:25,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:05:25,824 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 15:05:25,824 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:05:25,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352810998] [2023-12-02 15:05:25,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352810998] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:05:25,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1747344637] [2023-12-02 15:05:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:25,825 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:05:25,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:05:25,826 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:05:25,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 15:05:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:26,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:05:26,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:26,585 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 15:05:26,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:05:26,625 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 15:05:26,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1747344637] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:05:26,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561141189] [2023-12-02 15:05:26,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:26,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:05:26,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:05:26,627 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:05:26,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 15:05:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:27,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:05:27,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:27,110 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:05:27,110 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:05:27,111 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:05:27,113 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 15:05:27,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:05:27,185 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 15:05:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 15:05:27,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:05:27,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561141189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:05:27,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-12-02 15:05:27,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2023-12-02 15:05:27,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536957328] [2023-12-02 15:05:27,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:05:27,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:05:27,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:05:27,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:05:27,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:05:27,214 INFO L87 Difference]: Start difference. First operand 405 states and 516 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:05:31,543 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 15:05:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:33,927 INFO L93 Difference]: Finished difference Result 483 states and 618 transitions. [2023-12-02 15:05:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:05:33,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (4), 2 states have call predecessors, (4), 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 15:05:33,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:33,931 INFO L225 Difference]: With dead ends: 483 [2023-12-02 15:05:33,931 INFO L226 Difference]: Without dead ends: 483 [2023-12-02 15:05:33,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:05:33,932 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 135 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:05:33,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 655 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2023-12-02 15:05:33,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-12-02 15:05:33,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 407. [2023-12-02 15:05:33,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 392 states have (on average 1.2729591836734695) internal successors, (499), 400 states have internal predecessors, (499), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:05:33,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 518 transitions. [2023-12-02 15:05:33,943 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 518 transitions. Word has length 86 [2023-12-02 15:05:33,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:33,943 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 518 transitions. [2023-12-02 15:05:33,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:05:33,943 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 518 transitions. [2023-12-02 15:05:33,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 15:05:33,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:33,945 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:33,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:34,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-02 15:05:34,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 15:05:34,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:05:34,546 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:05:34,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:34,546 INFO L85 PathProgramCache]: Analyzing trace with hash -24096235, now seen corresponding path program 1 times [2023-12-02 15:05:34,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:05:34,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568492090] [2023-12-02 15:05:34,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:34,547 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 15:05:34,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:05:34,548 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:34,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-02 15:05:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:35,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:05:35,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:35,090 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 15:05:35,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:05:35,168 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 15:05:35,169 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:05:35,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568492090] [2023-12-02 15:05:35,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568492090] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:05:35,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1099327508] [2023-12-02 15:05:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:35,169 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:05:35,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:05:35,170 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:05:35,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-02 15:05:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:35,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:05:35,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 15:05:35,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:05:35,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1099327508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:05:35,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:05:35,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 15:05:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406357880] [2023-12-02 15:05:35,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:05:35,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:05:35,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:05:35,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:05:35,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:05:35,868 INFO L87 Difference]: Start difference. First operand 407 states and 518 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:05:35,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:35,980 INFO L93 Difference]: Finished difference Result 470 states and 581 transitions. [2023-12-02 15:05:35,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:05:35,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 126 [2023-12-02 15:05:35,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:35,983 INFO L225 Difference]: With dead ends: 470 [2023-12-02 15:05:35,984 INFO L226 Difference]: Without dead ends: 470 [2023-12-02 15:05:35,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:05:35,984 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 8 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:05:35,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 458 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:05:35,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-12-02 15:05:35,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 467. [2023-12-02 15:05:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 452 states have (on average 1.2367256637168142) internal successors, (559), 460 states have internal predecessors, (559), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:05:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 578 transitions. [2023-12-02 15:05:35,998 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 578 transitions. Word has length 126 [2023-12-02 15:05:35,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:35,999 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 578 transitions. [2023-12-02 15:05:35,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:05:35,999 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 578 transitions. [2023-12-02 15:05:36,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 15:05:36,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:36,001 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:36,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2023-12-02 15:05:36,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-02 15:05:36,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:36,404 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:05:36,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:36,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1139276569, now seen corresponding path program 1 times [2023-12-02 15:05:36,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:05:36,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2688070] [2023-12-02 15:05:36,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:36,406 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 15:05:36,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:05:36,407 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:36,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-02 15:05:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:36,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:05:36,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:36,959 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 15:05:36,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:05:37,035 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 15:05:37,035 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:05:37,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2688070] [2023-12-02 15:05:37,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2688070] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:05:37,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1493206822] [2023-12-02 15:05:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:37,035 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:05:37,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:05:37,036 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:05:37,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-02 15:05:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:37,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:05:37,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 15:05:37,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:05:37,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1493206822] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:05:37,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:05:37,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 15:05:37,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120730636] [2023-12-02 15:05:37,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:05:37,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:05:37,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:05:37,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:05:37,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:05:37,750 INFO L87 Difference]: Start difference. First operand 467 states and 578 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:05:37,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:37,879 INFO L93 Difference]: Finished difference Result 419 states and 497 transitions. [2023-12-02 15:05:37,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:05:37,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 126 [2023-12-02 15:05:37,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:37,881 INFO L225 Difference]: With dead ends: 419 [2023-12-02 15:05:37,881 INFO L226 Difference]: Without dead ends: 419 [2023-12-02 15:05:37,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:05:37,882 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 39 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:05:37,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 654 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:05:37,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-12-02 15:05:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 416. [2023-12-02 15:05:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 401 states have (on average 1.1845386533665836) internal successors, (475), 409 states have internal predecessors, (475), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:05:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 494 transitions. [2023-12-02 15:05:37,890 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 494 transitions. Word has length 126 [2023-12-02 15:05:37,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:37,891 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 494 transitions. [2023-12-02 15:05:37,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:05:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 494 transitions. [2023-12-02 15:05:37,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 15:05:37,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:37,893 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:37,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-02 15:05:38,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-02 15:05:38,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:38,293 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:05:38,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:38,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1131754549, now seen corresponding path program 1 times [2023-12-02 15:05:38,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:05:38,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177605196] [2023-12-02 15:05:38,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:38,295 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 15:05:38,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:05:38,296 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:38,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-02 15:05:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:38,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:05:38,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:38,885 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 15:05:38,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:05:38,980 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 15:05:38,981 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:05:38,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177605196] [2023-12-02 15:05:38,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177605196] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:05:38,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1373558170] [2023-12-02 15:05:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:38,981 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:05:38,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:05:38,983 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:05:38,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-02 15:05:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:39,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:05:39,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:39,938 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 15:05:39,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:05:39,996 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 15:05:39,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1373558170] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:05:39,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905064594] [2023-12-02 15:05:39,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:39,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:05:39,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:05:39,998 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:05:39,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 15:05:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:40,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:05:40,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:40,605 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 15:05:40,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:05:40,696 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 15:05:40,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905064594] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:05:40,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:05:40,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-12-02 15:05:40,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595008781] [2023-12-02 15:05:40,697 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:05:40,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 15:05:40,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:05:40,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 15:05:40,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:05:40,699 INFO L87 Difference]: Start difference. First operand 416 states and 494 transitions. Second operand has 11 states, 8 states have (on average 16.5) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:05:41,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:41,108 INFO L93 Difference]: Finished difference Result 428 states and 513 transitions. [2023-12-02 15:05:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 15:05:41,109 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 16.5) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 126 [2023-12-02 15:05:41,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:41,112 INFO L225 Difference]: With dead ends: 428 [2023-12-02 15:05:41,112 INFO L226 Difference]: Without dead ends: 428 [2023-12-02 15:05:41,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 741 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-12-02 15:05:41,113 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 18 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:05:41,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1431 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:05:41,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-12-02 15:05:41,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2023-12-02 15:05:41,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 410 states have (on average 1.2) internal successors, (492), 418 states have internal predecessors, (492), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:05:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 511 transitions. [2023-12-02 15:05:41,124 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 511 transitions. Word has length 126 [2023-12-02 15:05:41,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:41,125 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 511 transitions. [2023-12-02 15:05:41,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 16.5) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:05:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 511 transitions. [2023-12-02 15:05:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 15:05:41,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:41,126 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:41,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-02 15:05:41,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 15:05:41,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-02 15:05:41,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:41,727 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:05:41,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:41,728 INFO L85 PathProgramCache]: Analyzing trace with hash 724728963, now seen corresponding path program 2 times [2023-12-02 15:05:41,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:05:41,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372176042] [2023-12-02 15:05:41,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:05:41,728 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 15:05:41,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:05:41,729 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:41,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-02 15:05:42,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:05:42,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:05:42,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:05:42,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:42,488 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 15:05:42,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:05:42,691 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 15:05:42,691 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:05:42,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372176042] [2023-12-02 15:05:42,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372176042] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:05:42,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1192948128] [2023-12-02 15:05:42,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:05:42,692 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:05:42,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:05:42,693 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:05:42,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 15:05:44,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:05:44,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:05:44,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:05:44,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:44,210 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 15:05:44,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:05:44,275 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 15:05:44,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1192948128] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:05:44,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599630350] [2023-12-02 15:05:44,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:05:44,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:05:44,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:05:44,276 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:05:44,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 15:05:44,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:05:44,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:05:45,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:05:45,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:45,068 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 15:05:45,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:05:45,346 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 15:05:45,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599630350] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:05:45,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:05:45,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2023-12-02 15:05:45,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521772646] [2023-12-02 15:05:45,347 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:05:45,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 15:05:45,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:05:45,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 15:05:45,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2023-12-02 15:05:45,350 INFO L87 Difference]: Start difference. First operand 426 states and 511 transitions. Second operand has 20 states, 17 states have (on average 8.235294117647058) internal successors, (140), 20 states have internal predecessors, (140), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:05:46,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:46,213 INFO L93 Difference]: Finished difference Result 439 states and 528 transitions. [2023-12-02 15:05:46,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 15:05:46,214 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.235294117647058) internal successors, (140), 20 states have internal predecessors, (140), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-02 15:05:46,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:46,217 INFO L225 Difference]: With dead ends: 439 [2023-12-02 15:05:46,218 INFO L226 Difference]: Without dead ends: 436 [2023-12-02 15:05:46,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 15:05:46,219 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 13 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:05:46,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1440 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:05:46,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-12-02 15:05:46,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 433. [2023-12-02 15:05:46,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 417 states have (on average 1.196642685851319) internal successors, (499), 425 states have internal predecessors, (499), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 15:05:46,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 518 transitions. [2023-12-02 15:05:46,233 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 518 transitions. Word has length 132 [2023-12-02 15:05:46,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:46,234 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 518 transitions. [2023-12-02 15:05:46,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.235294117647058) internal successors, (140), 20 states have internal predecessors, (140), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:05:46,234 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 518 transitions. [2023-12-02 15:05:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 15:05:46,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:46,236 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:46,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 15:05:46,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-02 15:05:46,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-02 15:05:46,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:46,837 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:05:46,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:46,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1167535696, now seen corresponding path program 3 times [2023-12-02 15:05:46,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:05:46,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567375158] [2023-12-02 15:05:46,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:05:46,838 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 15:05:46,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:05:46,839 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/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 15:05:46,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-02 15:05:51,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 15:05:51,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:05:51,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:05:51,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:51,717 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 15:05:51,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:05:52,081 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 15:05:52,082 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:05:52,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567375158] [2023-12-02 15:05:52,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567375158] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:05:52,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1060760366] [2023-12-02 15:05:52,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:05:52,082 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:05:52,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:05:52,083 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:05:52,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-02 15:11:08,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 15:11:08,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:11:08,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:11:08,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:11:08,503 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 15:11:08,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:11:08,629 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 15:11:08,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1060760366] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:11:08,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734698083] [2023-12-02 15:11:08,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:11:08,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:11:08,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:11:08,631 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:11:08,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2959fa26-1075-4479-9305-24381d594d73/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process