./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:00:48,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:00:48,544 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 18:00:48,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:00:48,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:00:48,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:00:48,579 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:00:48,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:00:48,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:00:48,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:00:48,582 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:00:48,583 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:00:48,583 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:00:48,584 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:00:48,584 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:00:48,585 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:00:48,586 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:00:48,586 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:00:48,587 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:00:48,587 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:00:48,588 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:00:48,589 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:00:48,589 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 18:00:48,590 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 18:00:48,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:00:48,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:00:48,591 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:00:48,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:00:48,592 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:00:48,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:00:48,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:00:48,593 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 18:00:48,594 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 18:00:48,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:00:48,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:00:48,595 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:00:48,595 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:00:48,595 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:00:48,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:00:48,596 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:00:48,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:00:48,596 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:00:48,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:00:48,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:00:48,597 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:00:48,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:00:48,597 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:00:48,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:00:48,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:00:48,598 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:00:48,598 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:00:48,599 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_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2023-12-02 18:00:48,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:00:48,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:00:48,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:00:48,858 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:00:48,859 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:00:48,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-12-02 18:00:51,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:00:51,904 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:00:51,905 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-12-02 18:00:51,922 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/data/ba51419c1/87663566ec384fd7a24cf7935ff0e17a/FLAGbc1a272d9 [2023-12-02 18:00:52,201 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/data/ba51419c1/87663566ec384fd7a24cf7935ff0e17a [2023-12-02 18:00:52,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:00:52,205 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:00:52,206 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:00:52,206 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:00:52,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:00:52,211 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:00:52" (1/1) ... [2023-12-02 18:00:52,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f01328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:52, skipping insertion in model container [2023-12-02 18:00:52,212 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:00:52" (1/1) ... [2023-12-02 18:00:52,277 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:00:52,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:00:52,791 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 18:00:52,792 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@13f0bcdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:52, skipping insertion in model container [2023-12-02 18:00:52,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:00:52,793 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 18:00:52,794 INFO L158 Benchmark]: Toolchain (without parser) took 588.60ms. Allocated memory is still 182.5MB. Free memory was 137.8MB in the beginning and 115.2MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-02 18:00:52,795 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 132.1MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:00:52,796 INFO L158 Benchmark]: CACSL2BoogieTranslator took 586.57ms. Allocated memory is still 182.5MB. Free memory was 137.3MB in the beginning and 115.2MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-02 18:00:52,797 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 132.1MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 586.57ms. Allocated memory is still 182.5MB. Free memory was 137.3MB in the beginning and 115.2MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:00:54,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:00:54,594 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 18:00:54,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:00:54,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:00:54,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:00:54,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:00:54,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:00:54,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:00:54,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:00:54,635 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:00:54,635 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:00:54,636 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:00:54,636 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:00:54,637 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:00:54,637 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:00:54,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 18:00:54,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 18:00:54,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:00:54,640 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:00:54,640 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:00:54,641 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:00:54,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:00:54,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:00:54,642 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:00:54,643 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 18:00:54,643 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 18:00:54,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:00:54,644 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:00:54,644 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:00:54,644 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 18:00:54,645 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 18:00:54,645 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:00:54,645 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:00:54,646 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:00:54,646 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:00:54,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:00:54,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 18:00:54,647 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:00:54,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:00:54,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:00:54,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:00:54,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:00:54,648 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 18:00:54,648 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 18:00:54,648 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:00:54,648 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:00:54,649 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:00:54,649 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_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2023-12-02 18:00:54,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:00:54,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:00:54,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:00:54,982 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:00:54,982 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:00:54,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-12-02 18:00:57,793 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:00:58,090 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:00:58,090 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-12-02 18:00:58,109 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/data/66d2ba033/dc2c368b7f8d40309e6b71a162239dda/FLAG73fd7a9cb [2023-12-02 18:00:58,125 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/data/66d2ba033/dc2c368b7f8d40309e6b71a162239dda [2023-12-02 18:00:58,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:00:58,129 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:00:58,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:00:58,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:00:58,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:00:58,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:00:58" (1/1) ... [2023-12-02 18:00:58,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a9c3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:58, skipping insertion in model container [2023-12-02 18:00:58,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:00:58" (1/1) ... [2023-12-02 18:00:58,217 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:00:58,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:00:58,808 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 18:00:58,822 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:00:58,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:00:58,926 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:00:59,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:00:59,074 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:00:59,082 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:00:59,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:59 WrapperNode [2023-12-02 18:00:59,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:00:59,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:00:59,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:00:59,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:00:59,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:59" (1/1) ... [2023-12-02 18:00:59,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:59" (1/1) ... [2023-12-02 18:00:59,194 INFO L138 Inliner]: procedures = 180, calls = 390, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1406 [2023-12-02 18:00:59,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:00:59,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:00:59,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:00:59,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:00:59,205 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:59" (1/1) ... [2023-12-02 18:00:59,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:59" (1/1) ... [2023-12-02 18:00:59,218 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:59" (1/1) ... [2023-12-02 18:00:59,219 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:59" (1/1) ... [2023-12-02 18:00:59,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:59" (1/1) ... [2023-12-02 18:00:59,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:59" (1/1) ... [2023-12-02 18:00:59,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:59" (1/1) ... [2023-12-02 18:00:59,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:59" (1/1) ... [2023-12-02 18:00:59,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:00:59,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:00:59,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:00:59,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:00:59,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:59" (1/1) ... [2023-12-02 18:00:59,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:00:59,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:00:59,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:00:59,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:00:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 18:00:59,386 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 18:00:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 18:00:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 18:00:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 18:00:59,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 18:00:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 18:00:59,387 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 18:00:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:00:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:00:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 18:00:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:00:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 18:00:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 18:00:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:00:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 18:00:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 18:00:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:00:59,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:00:59,604 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:00:59,607 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:01:12,297 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:01:12,335 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:01:12,335 INFO L309 CfgBuilder]: Removed 83 assume(true) statements. [2023-12-02 18:01:12,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:01:12 BoogieIcfgContainer [2023-12-02 18:01:12,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:01:12,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:01:12,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:01:12,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:01:12,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:00:58" (1/3) ... [2023-12-02 18:01:12,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dba378e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:01:12, skipping insertion in model container [2023-12-02 18:01:12,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:00:59" (2/3) ... [2023-12-02 18:01:12,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dba378e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:01:12, skipping insertion in model container [2023-12-02 18:01:12,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:01:12" (3/3) ... [2023-12-02 18:01:12,343 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-1.i [2023-12-02 18:01:12,358 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:01:12,358 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 18:01:12,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:01:12,408 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;@21029191, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:01:12,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 18:01:12,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 265 states, 246 states have (on average 1.6829268292682926) internal successors, (414), 255 states have internal predecessors, (414), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 18:01:12,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 18:01:12,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:12,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 18:01:12,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:01:12,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:12,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1302534622, now seen corresponding path program 1 times [2023-12-02 18:01:12,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:12,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25877989] [2023-12-02 18:01:12,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:12,435 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 18:01:12,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:12,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:12,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:12,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 18:01:12,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:12,662 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 18:01:12,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:12,663 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:12,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25877989] [2023-12-02 18:01:12,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25877989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:12,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:01:12,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:01:12,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023070764] [2023-12-02 18:01:12,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:12,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:01:12,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:01:12,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:01:12,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:01:12,698 INFO L87 Difference]: Start difference. First operand has 265 states, 246 states have (on average 1.6829268292682926) internal successors, (414), 255 states have internal predecessors, (414), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 18:01:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:12,751 INFO L93 Difference]: Finished difference Result 263 states and 345 transitions. [2023-12-02 18:01:12,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:01:12,754 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-12-02 18:01:12,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:12,776 INFO L225 Difference]: With dead ends: 263 [2023-12-02 18:01:12,776 INFO L226 Difference]: Without dead ends: 262 [2023-12-02 18:01:12,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 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 18:01:12,780 INFO L413 NwaCegarLoop]: 341 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, 341 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 18:01:12,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:01:12,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-02 18:01:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2023-12-02 18:01:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 245 states have (on average 1.3061224489795917) internal successors, (320), 252 states have internal predecessors, (320), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:01:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 344 transitions. [2023-12-02 18:01:12,867 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 344 transitions. Word has length 6 [2023-12-02 18:01:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:12,867 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 344 transitions. [2023-12-02 18:01:12,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 18:01:12,868 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 344 transitions. [2023-12-02 18:01:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 18:01:12,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:12,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 18:01:12,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:13,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:13,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:01:13,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:13,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1962852137, now seen corresponding path program 1 times [2023-12-02 18:01:13,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:13,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812521693] [2023-12-02 18:01:13,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:13,071 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 18:01:13,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:13,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:13,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:13,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:01:13,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:13,217 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 18:01:13,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:13,217 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:13,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812521693] [2023-12-02 18:01:13,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812521693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:13,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:01:13,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:01:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131538157] [2023-12-02 18:01:13,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:13,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:01:13,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:01:13,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:01:13,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:01:13,221 INFO L87 Difference]: Start difference. First operand 262 states and 344 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 18:01:13,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:13,484 INFO L93 Difference]: Finished difference Result 508 states and 672 transitions. [2023-12-02 18:01:13,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:01:13,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-12-02 18:01:13,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:13,489 INFO L225 Difference]: With dead ends: 508 [2023-12-02 18:01:13,489 INFO L226 Difference]: Without dead ends: 508 [2023-12-02 18:01:13,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 18:01:13,491 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 303 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:13,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 707 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:01:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-12-02 18:01:13,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 264. [2023-12-02 18:01:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 247 states have (on average 1.3036437246963564) internal successors, (322), 254 states have internal predecessors, (322), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:01:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 346 transitions. [2023-12-02 18:01:13,519 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 346 transitions. Word has length 6 [2023-12-02 18:01:13,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:13,519 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 346 transitions. [2023-12-02 18:01:13,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 18:01:13,520 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 346 transitions. [2023-12-02 18:01:13,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-02 18:01:13,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:13,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:13,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:13,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:13,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:01:13,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:13,731 INFO L85 PathProgramCache]: Analyzing trace with hash -523041530, now seen corresponding path program 1 times [2023-12-02 18:01:13,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:13,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821441846] [2023-12-02 18:01:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:13,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:01:13,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:13,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:13,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:14,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:01:14,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:01:14,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:14,442 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:14,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821441846] [2023-12-02 18:01:14,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821441846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:14,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:01:14,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:01:14,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735328155] [2023-12-02 18:01:14,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:14,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:01:14,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:01:14,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:01:14,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:01:14,444 INFO L87 Difference]: Start difference. First operand 264 states and 346 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:01:14,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:14,566 INFO L93 Difference]: Finished difference Result 268 states and 342 transitions. [2023-12-02 18:01:14,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:01:14,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-02 18:01:14,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:14,569 INFO L225 Difference]: With dead ends: 268 [2023-12-02 18:01:14,569 INFO L226 Difference]: Without dead ends: 268 [2023-12-02 18:01:14,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 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 18:01:14,571 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 36 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 912 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 18:01:14,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 912 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:01:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-02 18:01:14,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2023-12-02 18:01:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 250 states have (on average 1.268) internal successors, (317), 257 states have internal predecessors, (317), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:01:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 341 transitions. [2023-12-02 18:01:14,583 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 341 transitions. Word has length 151 [2023-12-02 18:01:14,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:14,583 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 341 transitions. [2023-12-02 18:01:14,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:01:14,584 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 341 transitions. [2023-12-02 18:01:14,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-02 18:01:14,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:14,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:14,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:14,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:14,792 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:01:14,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:14,792 INFO L85 PathProgramCache]: Analyzing trace with hash 852762490, now seen corresponding path program 1 times [2023-12-02 18:01:14,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:14,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887307232] [2023-12-02 18:01:14,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:14,796 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 18:01:14,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:14,797 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:14,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:15,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:01:15,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:01:15,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:15,761 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:15,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887307232] [2023-12-02 18:01:15,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887307232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:15,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:01:15,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:01:15,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836589450] [2023-12-02 18:01:15,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:15,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:01:15,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:01:15,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:01:15,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:01:15,764 INFO L87 Difference]: Start difference. First operand 267 states and 341 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:01:16,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:16,287 INFO L93 Difference]: Finished difference Result 309 states and 387 transitions. [2023-12-02 18:01:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:01:16,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-02 18:01:16,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:16,290 INFO L225 Difference]: With dead ends: 309 [2023-12-02 18:01:16,290 INFO L226 Difference]: Without dead ends: 309 [2023-12-02 18:01:16,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 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 18:01:16,291 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 11 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:16,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 644 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 18:01:16,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-02 18:01:16,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2023-12-02 18:01:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 292 states have (on average 1.2431506849315068) internal successors, (363), 299 states have internal predecessors, (363), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:01:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 387 transitions. [2023-12-02 18:01:16,313 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 387 transitions. Word has length 151 [2023-12-02 18:01:16,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:16,313 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 387 transitions. [2023-12-02 18:01:16,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:01:16,314 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 387 transitions. [2023-12-02 18:01:16,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-02 18:01:16,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:16,317 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:16,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-02 18:01:16,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:16,518 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:01:16,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:16,519 INFO L85 PathProgramCache]: Analyzing trace with hash -430394406, now seen corresponding path program 1 times [2023-12-02 18:01:16,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:16,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105308393] [2023-12-02 18:01:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:16,520 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 18:01:16,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:16,521 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:16,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:17,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:01:17,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:01:17,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:17,258 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:17,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105308393] [2023-12-02 18:01:17,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105308393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:17,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:01:17,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:01:17,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297481795] [2023-12-02 18:01:17,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:17,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:01:17,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:01:17,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:01:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:01:17,261 INFO L87 Difference]: Start difference. First operand 309 states and 387 transitions. Second operand has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:01:17,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:17,341 INFO L93 Difference]: Finished difference Result 311 states and 391 transitions. [2023-12-02 18:01:17,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:01:17,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 164 [2023-12-02 18:01:17,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:17,343 INFO L225 Difference]: With dead ends: 311 [2023-12-02 18:01:17,344 INFO L226 Difference]: Without dead ends: 311 [2023-12-02 18:01:17,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 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 18:01:17,344 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:17,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 974 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:01:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-02 18:01:17,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2023-12-02 18:01:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 293 states have (on average 1.2457337883959045) internal successors, (365), 301 states have internal predecessors, (365), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2023-12-02 18:01:17,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 391 transitions. [2023-12-02 18:01:17,353 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 391 transitions. Word has length 164 [2023-12-02 18:01:17,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:17,353 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 391 transitions. [2023-12-02 18:01:17,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:01:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 391 transitions. [2023-12-02 18:01:17,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 18:01:17,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:17,355 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:17,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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)] Forceful destruction successful, exit code 0 [2023-12-02 18:01:17,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:17,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:01:17,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash -506725582, now seen corresponding path program 1 times [2023-12-02 18:01:17,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:17,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886874396] [2023-12-02 18:01:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:17,563 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 18:01:17,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:17,566 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:17,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:18,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:01:18,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:01:18,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:01:18,424 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:18,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886874396] [2023-12-02 18:01:18,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886874396] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:01:18,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1068263967] [2023-12-02 18:01:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:18,425 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:01:18,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:01:18,426 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:01:18,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 18:01:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:19,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:01:19,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:01:19,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:19,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1068263967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:19,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:01:19,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 18:01:19,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376135895] [2023-12-02 18:01:19,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:19,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:01:19,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:01:19,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:01:19,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:01:19,219 INFO L87 Difference]: Start difference. First operand 311 states and 391 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 18:01:19,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:19,317 INFO L93 Difference]: Finished difference Result 332 states and 412 transitions. [2023-12-02 18:01:19,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:01:19,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 166 [2023-12-02 18:01:19,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:19,320 INFO L225 Difference]: With dead ends: 332 [2023-12-02 18:01:19,320 INFO L226 Difference]: Without dead ends: 332 [2023-12-02 18:01:19,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 488 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 18:01:19,322 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 8 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 606 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 18:01:19,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 606 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:01:19,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-02 18:01:19,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2023-12-02 18:01:19,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 313 states have (on average 1.2300319488817892) internal successors, (385), 321 states have internal predecessors, (385), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2023-12-02 18:01:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 411 transitions. [2023-12-02 18:01:19,335 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 411 transitions. Word has length 166 [2023-12-02 18:01:19,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:19,335 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 411 transitions. [2023-12-02 18:01:19,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 18:01:19,336 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 411 transitions. [2023-12-02 18:01:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 18:01:19,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:19,338 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:19,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-02 18:01:19,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 18:01:19,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:19,744 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:01:19,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1415857746, now seen corresponding path program 1 times [2023-12-02 18:01:19,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:19,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943832185] [2023-12-02 18:01:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:19,746 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 18:01:19,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:19,747 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:19,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:20,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:01:20,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:01:20,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:01:20,526 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:20,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943832185] [2023-12-02 18:01:20,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943832185] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:01:20,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [842963719] [2023-12-02 18:01:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:20,527 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:01:20,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:01:20,528 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:01:20,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 18:01:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:21,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:01:21,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:01:21,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:21,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [842963719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:21,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:01:21,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 18:01:21,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816140330] [2023-12-02 18:01:21,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:21,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:01:21,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:01:21,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:01:21,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:01:21,632 INFO L87 Difference]: Start difference. First operand 331 states and 411 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 18:01:22,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:22,401 INFO L93 Difference]: Finished difference Result 577 states and 724 transitions. [2023-12-02 18:01:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:01:22,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 166 [2023-12-02 18:01:22,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:22,407 INFO L225 Difference]: With dead ends: 577 [2023-12-02 18:01:22,407 INFO L226 Difference]: Without dead ends: 577 [2023-12-02 18:01:22,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 488 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 18:01:22,408 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 235 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:22,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 769 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 18:01:22,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-12-02 18:01:22,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 573. [2023-12-02 18:01:22,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 546 states have (on average 1.2362637362637363) internal successors, (675), 559 states have internal predecessors, (675), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (24), 12 states have call predecessors, (24), 20 states have call successors, (24) [2023-12-02 18:01:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 721 transitions. [2023-12-02 18:01:22,431 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 721 transitions. Word has length 166 [2023-12-02 18:01:22,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:22,432 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 721 transitions. [2023-12-02 18:01:22,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 18:01:22,433 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 721 transitions. [2023-12-02 18:01:22,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-02 18:01:22,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:22,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:22,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-02 18:01:22,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:22,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:22,840 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:01:22,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1820625144, now seen corresponding path program 1 times [2023-12-02 18:01:22,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:22,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900868558] [2023-12-02 18:01:22,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:22,842 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 18:01:22,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:22,843 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:22,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 18:01:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:23,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:01:23,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:23,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 18:01:23,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:01:23,646 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:23,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900868558] [2023-12-02 18:01:23,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900868558] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:01:23,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [515723205] [2023-12-02 18:01:23,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:23,646 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:01:23,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:01:23,648 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:01:23,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-02 18:01:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:24,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:01:24,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:01:25,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:25,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [515723205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:25,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:01:25,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 18:01:25,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758826737] [2023-12-02 18:01:25,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:25,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:01:25,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:01:25,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:01:25,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:01:25,383 INFO L87 Difference]: Start difference. First operand 573 states and 721 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 18:01:25,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:25,840 INFO L93 Difference]: Finished difference Result 717 states and 902 transitions. [2023-12-02 18:01:25,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:01:25,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 174 [2023-12-02 18:01:25,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:25,851 INFO L225 Difference]: With dead ends: 717 [2023-12-02 18:01:25,851 INFO L226 Difference]: Without dead ends: 717 [2023-12-02 18:01:25,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 512 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 18:01:25,852 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 92 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:25,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 690 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:01:25,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-12-02 18:01:25,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 713. [2023-12-02 18:01:25,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 683 states have (on average 1.2386530014641288) internal successors, (846), 696 states have internal predecessors, (846), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2023-12-02 18:01:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 899 transitions. [2023-12-02 18:01:25,875 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 899 transitions. Word has length 174 [2023-12-02 18:01:25,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:25,875 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 899 transitions. [2023-12-02 18:01:25,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 18:01:25,876 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 899 transitions. [2023-12-02 18:01:25,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 18:01:25,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:25,878 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:25,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-02 18:01:26,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2023-12-02 18:01:26,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:01:26,279 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:01:26,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:26,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1040811693, now seen corresponding path program 1 times [2023-12-02 18:01:26,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:26,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820808777] [2023-12-02 18:01:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:26,281 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 18:01:26,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:26,282 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:26,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 18:01:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:27,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:01:27,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 18:01:27,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 18:01:27,158 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:27,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820808777] [2023-12-02 18:01:27,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820808777] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:01:27,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1841677812] [2023-12-02 18:01:27,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:27,158 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:01:27,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:01:27,159 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:01:27,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-02 18:01:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:28,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:01:28,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 18:01:28,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:28,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1841677812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:28,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:01:28,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-12-02 18:01:28,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929182909] [2023-12-02 18:01:28,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:28,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:01:28,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:01:28,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:01:28,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:01:28,243 INFO L87 Difference]: Start difference. First operand 713 states and 899 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:01:28,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:28,354 INFO L93 Difference]: Finished difference Result 743 states and 914 transitions. [2023-12-02 18:01:28,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:01:28,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2023-12-02 18:01:28,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:28,359 INFO L225 Difference]: With dead ends: 743 [2023-12-02 18:01:28,359 INFO L226 Difference]: Without dead ends: 743 [2023-12-02 18:01:28,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:01:28,360 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 28 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:28,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 878 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:01:28,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2023-12-02 18:01:28,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 740. [2023-12-02 18:01:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 710 states have (on average 1.208450704225352) internal successors, (858), 723 states have internal predecessors, (858), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2023-12-02 18:01:28,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 911 transitions. [2023-12-02 18:01:28,380 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 911 transitions. Word has length 181 [2023-12-02 18:01:28,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:28,380 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 911 transitions. [2023-12-02 18:01:28,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:01:28,381 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 911 transitions. [2023-12-02 18:01:28,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 18:01:28,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:28,383 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:28,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 18:01:28,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-02 18:01:28,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:01:28,785 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:01:28,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:28,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1858460143, now seen corresponding path program 1 times [2023-12-02 18:01:28,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:28,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715448689] [2023-12-02 18:01:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:28,787 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 18:01:28,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:28,788 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:28,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 18:01:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:29,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:01:29,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 18:01:29,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 18:01:29,718 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:29,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715448689] [2023-12-02 18:01:29,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715448689] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:01:29,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1537832439] [2023-12-02 18:01:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:29,719 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:01:29,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:01:29,720 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:01:29,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-02 18:01:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:30,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:01:30,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 18:01:30,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:30,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1537832439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:30,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:01:30,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 18:01:30,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361113072] [2023-12-02 18:01:30,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:30,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:01:30,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:01:30,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:01:30,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 18:01:30,747 INFO L87 Difference]: Start difference. First operand 740 states and 911 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 18:01:30,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:30,840 INFO L93 Difference]: Finished difference Result 692 states and 830 transitions. [2023-12-02 18:01:30,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:01:30,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 181 [2023-12-02 18:01:30,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:30,844 INFO L225 Difference]: With dead ends: 692 [2023-12-02 18:01:30,844 INFO L226 Difference]: Without dead ends: 692 [2023-12-02 18:01:30,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 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 18:01:30,845 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 39 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 852 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 18:01:30,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 852 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:01:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2023-12-02 18:01:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 689. [2023-12-02 18:01:30,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 659 states have (on average 1.1745068285280729) internal successors, (774), 672 states have internal predecessors, (774), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2023-12-02 18:01:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 827 transitions. [2023-12-02 18:01:30,868 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 827 transitions. Word has length 181 [2023-12-02 18:01:30,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:30,868 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 827 transitions. [2023-12-02 18:01:30,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 18:01:30,868 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 827 transitions. [2023-12-02 18:01:30,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 18:01:30,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:30,870 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:30,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-02 18:01:31,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2023-12-02 18:01:31,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:01:31,271 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:01:31,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:31,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1926848735, now seen corresponding path program 1 times [2023-12-02 18:01:31,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:31,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988330865] [2023-12-02 18:01:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:31,273 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 18:01:31,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:31,273 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:31,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-02 18:01:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:32,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:01:32,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 18:01:32,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 18:01:32,190 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:32,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988330865] [2023-12-02 18:01:32,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988330865] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:01:32,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [350750474] [2023-12-02 18:01:32,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:32,191 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:01:32,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:01:32,192 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:01:32,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-02 18:01:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:33,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:01:33,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 18:01:33,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:33,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [350750474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:33,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:01:33,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 18:01:33,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058271074] [2023-12-02 18:01:33,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:33,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:01:33,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:01:33,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:01:33,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 18:01:33,558 INFO L87 Difference]: Start difference. First operand 689 states and 827 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:01:36,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:38,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:40,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:43,965 WARN L539 Checker$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 18:01:45,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:48,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:01:52,754 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 18:01:52,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:52,776 INFO L93 Difference]: Finished difference Result 626 states and 743 transitions. [2023-12-02 18:01:52,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:01:52,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2023-12-02 18:01:52,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:52,781 INFO L225 Difference]: With dead ends: 626 [2023-12-02 18:01:52,781 INFO L226 Difference]: Without dead ends: 626 [2023-12-02 18:01:52,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 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 18:01:52,782 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 399 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 16 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:52,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 516 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 124 Invalid, 5 Unknown, 0 Unchecked, 19.2s Time] [2023-12-02 18:01:52,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-12-02 18:01:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 409. [2023-12-02 18:01:52,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 388 states have (on average 1.1675257731958764) internal successors, (453), 396 states have internal predecessors, (453), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (17), 10 states have call predecessors, (17), 14 states have call successors, (17) [2023-12-02 18:01:52,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 486 transitions. [2023-12-02 18:01:52,799 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 486 transitions. Word has length 181 [2023-12-02 18:01:52,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:52,800 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 486 transitions. [2023-12-02 18:01:52,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:01:52,801 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 486 transitions. [2023-12-02 18:01:52,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-02 18:01:52,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:52,803 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:52,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-02 18:01:53,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-12-02 18:01:53,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:01:53,204 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:01:53,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:53,204 INFO L85 PathProgramCache]: Analyzing trace with hash -166179989, now seen corresponding path program 1 times [2023-12-02 18:01:53,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:53,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995747046] [2023-12-02 18:01:53,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:53,206 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 18:01:53,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:53,207 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:53,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:54,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:01:54,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 18:01:54,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 18:01:54,195 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:54,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995747046] [2023-12-02 18:01:54,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995747046] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:01:54,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [419750768] [2023-12-02 18:01:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:54,196 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:01:54,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:01:54,197 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:01:54,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 18:01:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:55,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:01:55,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 18:01:55,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:01:55,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [419750768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:01:55,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:01:55,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 18:01:55,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614625083] [2023-12-02 18:01:55,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:01:55,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:01:55,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:01:55,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:01:55,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 18:01:55,372 INFO L87 Difference]: Start difference. First operand 409 states and 486 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:01:55,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:55,462 INFO L93 Difference]: Finished difference Result 397 states and 467 transitions. [2023-12-02 18:01:55,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:01:55,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 189 [2023-12-02 18:01:55,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:55,465 INFO L225 Difference]: With dead ends: 397 [2023-12-02 18:01:55,466 INFO L226 Difference]: Without dead ends: 397 [2023-12-02 18:01:55,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 556 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 18:01:55,466 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 32 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:55,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 838 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:01:55,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-12-02 18:01:55,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2023-12-02 18:01:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 376 states have (on average 1.1542553191489362) internal successors, (434), 384 states have internal predecessors, (434), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (17), 10 states have call predecessors, (17), 14 states have call successors, (17) [2023-12-02 18:01:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 467 transitions. [2023-12-02 18:01:55,477 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 467 transitions. Word has length 189 [2023-12-02 18:01:55,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:55,478 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 467 transitions. [2023-12-02 18:01:55,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 18:01:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 467 transitions. [2023-12-02 18:01:55,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-02 18:01:55,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:55,480 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:55,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-02 18:01:55,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-02 18:01:55,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:01:55,896 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:01:55,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:55,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1857756189, now seen corresponding path program 1 times [2023-12-02 18:01:55,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:01:55,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030520723] [2023-12-02 18:01:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:55,897 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 18:01:55,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:01:55,898 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:01:55,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 (21)] Waiting until timeout for monitored process [2023-12-02 18:01:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:56,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:01:56,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 18:01:56,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 18:01:56,925 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:01:56,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030520723] [2023-12-02 18:01:56,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030520723] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:01:56,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [182280399] [2023-12-02 18:01:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:56,926 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:01:56,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:01:56,927 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:01:56,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-02 18:01:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:58,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:01:58,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 18:01:58,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 18:01:58,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [182280399] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:01:58,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679931571] [2023-12-02 18:01:58,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:58,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:01:58,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:01:58,489 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:01:58,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 18:01:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:59,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:01:59,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 18:01:59,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:02:00,096 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 18:02:00,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679931571] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:02:00,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:02:00,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2023-12-02 18:02:00,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866053630] [2023-12-02 18:02:00,098 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:02:00,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 18:02:00,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:02:00,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 18:02:00,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:02:00,101 INFO L87 Difference]: Start difference. First operand 397 states and 467 transitions. Second operand has 12 states, 10 states have (on average 41.6) internal successors, (416), 12 states have internal predecessors, (416), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 18:02:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:02:01,608 INFO L93 Difference]: Finished difference Result 924 states and 1116 transitions. [2023-12-02 18:02:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 18:02:01,609 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 41.6) internal successors, (416), 12 states have internal predecessors, (416), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 189 [2023-12-02 18:02:01,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:02:01,613 INFO L225 Difference]: With dead ends: 924 [2023-12-02 18:02:01,613 INFO L226 Difference]: Without dead ends: 924 [2023-12-02 18:02:01,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 1119 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-02 18:02:01,614 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 1241 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:02:01,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 2375 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 18:02:01,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2023-12-02 18:02:01,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 854. [2023-12-02 18:02:01,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 818 states have (on average 1.1687041564792175) internal successors, (956), 831 states have internal predecessors, (956), 30 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (36), 20 states have call predecessors, (36), 28 states have call successors, (36) [2023-12-02 18:02:01,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1022 transitions. [2023-12-02 18:02:01,634 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1022 transitions. Word has length 189 [2023-12-02 18:02:01,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:02:01,635 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1022 transitions. [2023-12-02 18:02:01,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 41.6) internal successors, (416), 12 states have internal predecessors, (416), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 18:02:01,635 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1022 transitions. [2023-12-02 18:02:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-02 18:02:01,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:02:01,639 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:01,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2023-12-02 18:02:01,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 (21)] Ended with exit code 0 [2023-12-02 18:02:02,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 18:02:02,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:02:02,240 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:02:02,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:02:02,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1935184991, now seen corresponding path program 1 times [2023-12-02 18:02:02,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:02:02,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78688442] [2023-12-02 18:02:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:02:02,245 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 18:02:02,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:02:02,246 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:02:02,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-02 18:02:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:02:04,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:02:04,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:02:04,464 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2023-12-02 18:02:04,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:02:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-02 18:02:04,674 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:02:04,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78688442] [2023-12-02 18:02:04,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78688442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:02:04,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2098306603] [2023-12-02 18:02:04,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:02:04,675 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:02:04,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:02:04,676 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:02:04,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-02 18:02:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:02:08,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:02:08,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:02:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2023-12-02 18:02:08,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:02:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-02 18:02:08,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2098306603] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:02:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430249847] [2023-12-02 18:02:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:02:08,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:02:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:02:08,499 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:02:08,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 18:02:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:02:10,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:02:10,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:02:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 200 proven. 3 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2023-12-02 18:02:10,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:02:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 128 proven. 29 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2023-12-02 18:02:10,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430249847] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:02:10,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:02:10,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2023-12-02 18:02:10,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065371704] [2023-12-02 18:02:10,852 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:02:10,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 18:02:10,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:02:10,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 18:02:10,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2023-12-02 18:02:10,856 INFO L87 Difference]: Start difference. First operand 854 states and 1022 transitions. Second operand has 20 states, 16 states have (on average 14.75) internal successors, (236), 20 states have internal predecessors, (236), 2 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 18:02:12,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:02:12,019 INFO L93 Difference]: Finished difference Result 873 states and 1078 transitions. [2023-12-02 18:02:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 18:02:12,020 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 14.75) internal successors, (236), 20 states have internal predecessors, (236), 2 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 515 [2023-12-02 18:02:12,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:02:12,024 INFO L225 Difference]: With dead ends: 873 [2023-12-02 18:02:12,024 INFO L226 Difference]: Without dead ends: 870 [2023-12-02 18:02:12,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3109 GetRequests, 3066 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 18:02:12,025 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 33 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:02:12,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2907 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 18:02:12,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2023-12-02 18:02:12,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 866. [2023-12-02 18:02:12,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 830 states have (on average 1.1710843373493975) internal successors, (972), 843 states have internal predecessors, (972), 30 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (36), 20 states have call predecessors, (36), 28 states have call successors, (36) [2023-12-02 18:02:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1038 transitions. [2023-12-02 18:02:12,046 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1038 transitions. Word has length 515 [2023-12-02 18:02:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:02:12,046 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1038 transitions. [2023-12-02 18:02:12,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 14.75) internal successors, (236), 20 states have internal predecessors, (236), 2 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 18:02:12,046 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1038 transitions. [2023-12-02 18:02:12,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2023-12-02 18:02:12,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:02:12,052 INFO L195 NwaCegarLoop]: trace histogram [36, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:12,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-12-02 18:02:12,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 18:02:12,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2023-12-02 18:02:12,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:02:12,653 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:02:12,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:02:12,654 INFO L85 PathProgramCache]: Analyzing trace with hash -180268577, now seen corresponding path program 2 times [2023-12-02 18:02:12,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:02:12,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726598914] [2023-12-02 18:02:12,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:02:12,656 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 18:02:12,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:02:12,657 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:02:12,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 (27)] Waiting until timeout for monitored process [2023-12-02 18:02:15,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:02:15,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:02:15,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:02:15,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:02:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2023-12-02 18:02:15,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:02:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 112 proven. 377 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2023-12-02 18:02:16,004 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:02:16,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726598914] [2023-12-02 18:02:16,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726598914] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:02:16,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1186082388] [2023-12-02 18:02:16,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:02:16,005 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:02:16,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:02:16,006 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:02:16,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-12-02 18:02:20,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:02:20,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:02:20,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:02:20,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:02:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2023-12-02 18:02:20,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:02:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 112 proven. 377 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2023-12-02 18:02:21,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1186082388] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:02:21,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384055864] [2023-12-02 18:02:21,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:02:21,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:02:21,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:02:21,089 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:02:21,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 18:02:23,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:02:23,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:02:23,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:02:23,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:02:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 0 proven. 628 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2023-12-02 18:02:24,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:02:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 0 proven. 628 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2023-12-02 18:02:26,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384055864] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:02:26,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:02:26,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2023-12-02 18:02:26,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288140218] [2023-12-02 18:02:26,082 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:02:26,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 18:02:26,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:02:26,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 18:02:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 18:02:26,089 INFO L87 Difference]: Start difference. First operand 866 states and 1038 transitions. Second operand has 36 states, 34 states have (on average 32.705882352941174) internal successors, (1112), 36 states have internal predecessors, (1112), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 18:02:40,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:02:40,214 INFO L93 Difference]: Finished difference Result 2194 states and 2810 transitions. [2023-12-02 18:02:40,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-02 18:02:40,216 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 32.705882352941174) internal successors, (1112), 36 states have internal predecessors, (1112), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 539 [2023-12-02 18:02:40,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:02:40,226 INFO L225 Difference]: With dead ends: 2194 [2023-12-02 18:02:40,226 INFO L226 Difference]: Without dead ends: 2192 [2023-12-02 18:02:40,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3267 GetRequests, 3198 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1091, Invalid=3879, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 18:02:40,230 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 4553 mSDsluCounter, 18914 mSDsCounter, 0 mSdLazyCounter, 3086 mSolverCounterSat, 910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4715 SdHoareTripleChecker+Valid, 20112 SdHoareTripleChecker+Invalid, 3996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 3086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:02:40,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4715 Valid, 20112 Invalid, 3996 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [910 Valid, 3086 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2023-12-02 18:02:40,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2023-12-02 18:02:40,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 2111. [2023-12-02 18:02:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 2036 states have (on average 1.1655206286836934) internal successors, (2373), 2064 states have internal predecessors, (2373), 69 states have call successors, (69), 4 states have call predecessors, (69), 4 states have return successors, (87), 47 states have call predecessors, (87), 67 states have call successors, (87) [2023-12-02 18:02:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 2529 transitions. [2023-12-02 18:02:40,279 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 2529 transitions. Word has length 539 [2023-12-02 18:02:40,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:02:40,279 INFO L495 AbstractCegarLoop]: Abstraction has 2111 states and 2529 transitions. [2023-12-02 18:02:40,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 32.705882352941174) internal successors, (1112), 36 states have internal predecessors, (1112), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 18:02:40,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 2529 transitions. [2023-12-02 18:02:40,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1206 [2023-12-02 18:02:40,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:02:40,295 INFO L195 NwaCegarLoop]: trace histogram [66, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:40,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 18:02:40,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 (27)] Ended with exit code 0 [2023-12-02 18:02:40,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2023-12-02 18:02:40,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:02:40,896 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 18:02:40,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:02:40,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1959245525, now seen corresponding path program 3 times [2023-12-02 18:02:40,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:02:40,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550033364] [2023-12-02 18:02:40,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:02:40,902 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 18:02:40,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:02:40,903 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 18:02:40,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51f5a1f-cbdd-4641-8ce3-c6828ce95906/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 (30)] Waiting until timeout for monitored process