./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/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_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:41:45,595 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:41:45,654 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 16:41:45,659 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:41:45,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:41:45,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:41:45,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:41:45,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:41:45,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:41:45,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:41:45,684 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:41:45,685 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:41:45,685 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:41:45,686 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:41:45,686 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:41:45,687 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:41:45,687 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:41:45,688 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:41:45,688 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:41:45,689 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:41:45,689 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:41:45,690 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:41:45,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 16:41:45,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 16:41:45,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:41:45,692 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:41:45,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:41:45,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:41:45,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:41:45,694 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 16:41:45,694 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 16:41:45,694 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 16:41:45,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:41:45,695 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:41:45,695 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:41:45,695 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:41:45,696 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:41:45,696 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:41:45,696 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:41:45,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:41:45,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:41:45,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:41:45,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:41:45,697 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:41:45,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:41:45,697 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:41:45,698 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:41:45,698 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:41:45,698 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_813f03e0-9fb1-4433-aafc-4a9641ce6dea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f [2023-12-02 16:41:45,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:41:45,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:41:45,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:41:45,937 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:41:45,937 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:41:45,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2023-12-02 16:41:48,695 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:41:48,963 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:41:48,963 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2023-12-02 16:41:48,983 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/data/34a720add/0eb910c68fd54938b04a6fe09d55e736/FLAGe9cd9f4de [2023-12-02 16:41:48,995 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/data/34a720add/0eb910c68fd54938b04a6fe09d55e736 [2023-12-02 16:41:48,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:41:48,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:41:49,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:41:49,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:41:49,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:41:49,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:41:48" (1/1) ... [2023-12-02 16:41:49,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e0fdbf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:49, skipping insertion in model container [2023-12-02 16:41:49,006 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:41:48" (1/1) ... [2023-12-02 16:41:49,076 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:41:49,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:41:49,590 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 16:41:49,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@42567262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:49, skipping insertion in model container [2023-12-02 16:41:49,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:41:49,591 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 16:41:49,593 INFO L158 Benchmark]: Toolchain (without parser) took 593.55ms. Allocated memory is still 155.2MB. Free memory was 105.3MB in the beginning and 85.3MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 16:41:49,594 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:41:49,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 591.14ms. Allocated memory is still 155.2MB. Free memory was 105.3MB in the beginning and 85.3MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 16:41:49,596 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 591.14ms. Allocated memory is still 155.2MB. Free memory was 105.3MB in the beginning and 85.3MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/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_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:41:51,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:41:51,434 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 16:41:51,440 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:41:51,440 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:41:51,466 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:41:51,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:41:51,467 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:41:51,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:41:51,468 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:41:51,469 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:41:51,469 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:41:51,470 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:41:51,470 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:41:51,471 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:41:51,471 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:41:51,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 16:41:51,472 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 16:41:51,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:41:51,473 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:41:51,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:41:51,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:41:51,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:41:51,475 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 16:41:51,476 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 16:41:51,476 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 16:41:51,476 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:41:51,477 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:41:51,477 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 16:41:51,478 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 16:41:51,478 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:41:51,478 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:41:51,479 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:41:51,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:41:51,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 16:41:51,480 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:41:51,480 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:41:51,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:41:51,481 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:41:51,481 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:41:51,481 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 16:41:51,482 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 16:41:51,482 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:41:51,482 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:41:51,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:41:51,482 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_813f03e0-9fb1-4433-aafc-4a9641ce6dea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f [2023-12-02 16:41:51,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:41:51,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:41:51,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:41:51,803 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:41:51,804 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:41:51,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2023-12-02 16:41:54,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:41:54,860 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:41:54,861 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2023-12-02 16:41:54,880 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/data/e6e47bc1b/6fb0381c6285488b8c372fad7e87809b/FLAG8a8687854 [2023-12-02 16:41:54,895 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/data/e6e47bc1b/6fb0381c6285488b8c372fad7e87809b [2023-12-02 16:41:54,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:41:54,899 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:41:54,900 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:41:54,900 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:41:54,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:41:54,906 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:41:54" (1/1) ... [2023-12-02 16:41:54,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@761b72e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:54, skipping insertion in model container [2023-12-02 16:41:54,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:41:54" (1/1) ... [2023-12-02 16:41:54,977 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:41:55,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:41:55,503 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 16:41:55,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:41:55,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:41:55,647 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:41:55,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:41:55,752 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:41:55,759 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:41:55,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:55 WrapperNode [2023-12-02 16:41:55,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:41:55,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:41:55,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:41:55,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:41:55,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:55" (1/1) ... [2023-12-02 16:41:55,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:55" (1/1) ... [2023-12-02 16:41:55,860 INFO L138 Inliner]: procedures = 179, calls = 331, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1184 [2023-12-02 16:41:55,861 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:41:55,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:41:55,862 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:41:55,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:41:55,888 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:55" (1/1) ... [2023-12-02 16:41:55,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:55" (1/1) ... [2023-12-02 16:41:55,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:55" (1/1) ... [2023-12-02 16:41:55,898 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:55" (1/1) ... [2023-12-02 16:41:55,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:55" (1/1) ... [2023-12-02 16:41:55,965 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:55" (1/1) ... [2023-12-02 16:41:55,971 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:55" (1/1) ... [2023-12-02 16:41:55,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:55" (1/1) ... [2023-12-02 16:41:55,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:41:55,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:41:55,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:41:55,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:41:55,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:55" (1/1) ... [2023-12-02 16:41:55,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:41:56,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:41:56,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:41:56,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:41:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 16:41:56,058 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 16:41:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 16:41:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 16:41:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 16:41:56,058 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 16:41:56,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 16:41:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:41:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 16:41:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:41:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 16:41:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 16:41:56,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:41:56,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 16:41:56,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 16:41:56,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:41:56,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:41:56,265 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:41:56,267 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:41:56,291 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 16:42:01,078 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:42:01,266 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:42:01,267 INFO L309 CfgBuilder]: Removed 72 assume(true) statements. [2023-12-02 16:42:01,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:42:01 BoogieIcfgContainer [2023-12-02 16:42:01,268 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:42:01,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:42:01,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:42:01,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:42:01,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:41:54" (1/3) ... [2023-12-02 16:42:01,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8b677b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:42:01, skipping insertion in model container [2023-12-02 16:42:01,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:41:55" (2/3) ... [2023-12-02 16:42:01,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8b677b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:42:01, skipping insertion in model container [2023-12-02 16:42:01,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:42:01" (3/3) ... [2023-12-02 16:42:01,277 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test7-2.i [2023-12-02 16:42:01,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:42:01,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2023-12-02 16:42:01,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:42:01,368 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;@63b4463b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:42:01,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2023-12-02 16:42:01,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 1139 states, 500 states have (on average 2.548) internal successors, (1274), 1132 states have internal predecessors, (1274), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 16:42:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 16:42:01,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:01,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 16:42:01,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:01,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash 62053, now seen corresponding path program 1 times [2023-12-02 16:42:01,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:01,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792954109] [2023-12-02 16:42:01,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:01,403 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 16:42:01,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:01,404 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:01,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:01,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:42:01,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:01,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:42:01,624 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 16:42:01,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:01,625 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:01,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792954109] [2023-12-02 16:42:01,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792954109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:01,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:01,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:42:01,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841613832] [2023-12-02 16:42:01,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:01,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:42:01,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:01,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:42:01,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:42:01,659 INFO L87 Difference]: Start difference. First operand has 1139 states, 500 states have (on average 2.548) internal successors, (1274), 1132 states have internal predecessors, (1274), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 16:42:03,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:03,964 INFO L93 Difference]: Finished difference Result 1297 states and 1372 transitions. [2023-12-02 16:42:03,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:42:03,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-12-02 16:42:03,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:03,986 INFO L225 Difference]: With dead ends: 1297 [2023-12-02 16:42:03,987 INFO L226 Difference]: Without dead ends: 1296 [2023-12-02 16:42:03,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 16:42:03,992 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 1058 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:03,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 752 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 16:42:04,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2023-12-02 16:42:04,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1123. [2023-12-02 16:42:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 502 states have (on average 2.354581673306773) internal successors, (1182), 1117 states have internal predecessors, (1182), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1190 transitions. [2023-12-02 16:42:04,081 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1190 transitions. Word has length 2 [2023-12-02 16:42:04,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:04,082 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1190 transitions. [2023-12-02 16:42:04,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 16:42:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1190 transitions. [2023-12-02 16:42:04,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 16:42:04,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:04,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 16:42:04,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:04,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:04,285 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:04,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:04,286 INFO L85 PathProgramCache]: Analyzing trace with hash 62054, now seen corresponding path program 1 times [2023-12-02 16:42:04,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:04,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023543267] [2023-12-02 16:42:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:04,287 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 16:42:04,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:04,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:04,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:04,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:42:04,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:04,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:42:04,428 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 16:42:04,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:04,429 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:04,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023543267] [2023-12-02 16:42:04,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023543267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:04,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:04,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:42:04,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135529710] [2023-12-02 16:42:04,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:04,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:42:04,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:04,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:42:04,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:42:04,433 INFO L87 Difference]: Start difference. First operand 1123 states and 1190 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 16:42:08,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:08,265 INFO L93 Difference]: Finished difference Result 1662 states and 1771 transitions. [2023-12-02 16:42:08,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:42:08,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-12-02 16:42:08,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:08,273 INFO L225 Difference]: With dead ends: 1662 [2023-12-02 16:42:08,273 INFO L226 Difference]: Without dead ends: 1662 [2023-12-02 16:42:08,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 16:42:08,274 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 579 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:08,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1402 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-02 16:42:08,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2023-12-02 16:42:08,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1292. [2023-12-02 16:42:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 672 states have (on average 2.325892857142857) internal successors, (1563), 1286 states have internal predecessors, (1563), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1571 transitions. [2023-12-02 16:42:08,315 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1571 transitions. Word has length 2 [2023-12-02 16:42:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:08,316 INFO L495 AbstractCegarLoop]: Abstraction has 1292 states and 1571 transitions. [2023-12-02 16:42:08,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 16:42:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1571 transitions. [2023-12-02 16:42:08,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 16:42:08,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:08,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 16:42:08,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:08,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:08,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:08,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:08,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1472588527, now seen corresponding path program 1 times [2023-12-02 16:42:08,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:08,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640662919] [2023-12-02 16:42:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:08,521 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 16:42:08,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:08,523 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:08,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:08,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 16:42:08,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:08,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:42:08,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:42:08,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 16:42:08,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 16:42:08,744 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:42:08,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 16:42:08,766 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 16:42:08,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:08,767 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:08,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640662919] [2023-12-02 16:42:08,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640662919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:08,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:08,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:42:08,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412586816] [2023-12-02 16:42:08,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:08,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:42:08,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:08,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:42:08,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:42:08,769 INFO L87 Difference]: Start difference. First operand 1292 states and 1571 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 16:42:12,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:12,391 INFO L93 Difference]: Finished difference Result 1459 states and 1749 transitions. [2023-12-02 16:42:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:42:12,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 16:42:12,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:12,399 INFO L225 Difference]: With dead ends: 1459 [2023-12-02 16:42:12,399 INFO L226 Difference]: Without dead ends: 1459 [2023-12-02 16:42:12,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:42:12,400 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 1331 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:12,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 377 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-02 16:42:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2023-12-02 16:42:12,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1112. [2023-12-02 16:42:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 502 states have (on average 2.3306772908366535) internal successors, (1170), 1106 states have internal predecessors, (1170), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1178 transitions. [2023-12-02 16:42:12,422 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1178 transitions. Word has length 6 [2023-12-02 16:42:12,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:12,422 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1178 transitions. [2023-12-02 16:42:12,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 16:42:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1178 transitions. [2023-12-02 16:42:12,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 16:42:12,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:12,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:42:12,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:12,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:12,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:12,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:12,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1594395936, now seen corresponding path program 1 times [2023-12-02 16:42:12,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:12,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181288879] [2023-12-02 16:42:12,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:12,625 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 16:42:12,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:12,626 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:12,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:12,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:42:12,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:12,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:42:12,745 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 16:42:12,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:12,745 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:12,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181288879] [2023-12-02 16:42:12,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181288879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:12,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:12,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:42:12,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044469693] [2023-12-02 16:42:12,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:12,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:42:12,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:12,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:42:12,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:42:12,747 INFO L87 Difference]: Start difference. First operand 1112 states and 1178 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 16:42:14,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:14,993 INFO L93 Difference]: Finished difference Result 1408 states and 1504 transitions. [2023-12-02 16:42:14,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:42:14,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-12-02 16:42:14,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:15,000 INFO L225 Difference]: With dead ends: 1408 [2023-12-02 16:42:15,000 INFO L226 Difference]: Without dead ends: 1408 [2023-12-02 16:42:15,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 16:42:15,002 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 881 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:15,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1233 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 16:42:15,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2023-12-02 16:42:15,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1065. [2023-12-02 16:42:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 502 states have (on average 2.237051792828685) internal successors, (1123), 1059 states have internal predecessors, (1123), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1131 transitions. [2023-12-02 16:42:15,030 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1131 transitions. Word has length 7 [2023-12-02 16:42:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:15,030 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1131 transitions. [2023-12-02 16:42:15,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 16:42:15,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1131 transitions. [2023-12-02 16:42:15,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 16:42:15,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:15,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:42:15,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 16:42:15,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:15,232 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:15,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:15,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1594395935, now seen corresponding path program 1 times [2023-12-02 16:42:15,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:15,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009700683] [2023-12-02 16:42:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:15,233 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 16:42:15,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:15,234 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:15,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:15,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:42:15,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:15,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:42:15,394 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 16:42:15,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:15,394 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:15,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009700683] [2023-12-02 16:42:15,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009700683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:15,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:15,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:42:15,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003245079] [2023-12-02 16:42:15,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:15,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:42:15,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:15,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:42:15,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:42:15,397 INFO L87 Difference]: Start difference. First operand 1065 states and 1131 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 16:42:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:18,695 INFO L93 Difference]: Finished difference Result 1478 states and 1577 transitions. [2023-12-02 16:42:18,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:42:18,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-12-02 16:42:18,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:18,702 INFO L225 Difference]: With dead ends: 1478 [2023-12-02 16:42:18,702 INFO L226 Difference]: Without dead ends: 1478 [2023-12-02 16:42:18,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 16:42:18,703 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 613 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:18,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1536 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 16:42:18,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2023-12-02 16:42:18,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1078. [2023-12-02 16:42:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 525 states have (on average 2.2285714285714286) internal successors, (1170), 1072 states have internal predecessors, (1170), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1178 transitions. [2023-12-02 16:42:18,723 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1178 transitions. Word has length 7 [2023-12-02 16:42:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:18,723 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1178 transitions. [2023-12-02 16:42:18,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 16:42:18,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1178 transitions. [2023-12-02 16:42:18,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 16:42:18,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:18,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:42:18,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:18,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:18,925 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:18,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:18,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1552491098, now seen corresponding path program 1 times [2023-12-02 16:42:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:18,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987605413] [2023-12-02 16:42:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:18,926 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 16:42:18,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:18,927 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:18,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:19,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:42:19,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:19,109 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 16:42:19,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:19,109 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:19,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987605413] [2023-12-02 16:42:19,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987605413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:19,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:19,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:42:19,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890801613] [2023-12-02 16:42:19,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:19,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:42:19,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:19,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:42:19,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:42:19,111 INFO L87 Difference]: Start difference. First operand 1078 states and 1178 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 16:42:21,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:21,262 INFO L93 Difference]: Finished difference Result 1667 states and 1811 transitions. [2023-12-02 16:42:21,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:42:21,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 12 [2023-12-02 16:42:21,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:21,272 INFO L225 Difference]: With dead ends: 1667 [2023-12-02 16:42:21,272 INFO L226 Difference]: Without dead ends: 1667 [2023-12-02 16:42:21,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 16:42:21,273 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 689 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:21,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 2911 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 16:42:21,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2023-12-02 16:42:21,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1282. [2023-12-02 16:42:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 729 states have (on average 2.179698216735254) internal successors, (1589), 1276 states have internal predecessors, (1589), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:21,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1597 transitions. [2023-12-02 16:42:21,297 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1597 transitions. Word has length 12 [2023-12-02 16:42:21,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:21,298 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 1597 transitions. [2023-12-02 16:42:21,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 16:42:21,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1597 transitions. [2023-12-02 16:42:21,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 16:42:21,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:21,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:42:21,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:21,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:21,499 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:21,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:21,500 INFO L85 PathProgramCache]: Analyzing trace with hash 966171000, now seen corresponding path program 1 times [2023-12-02 16:42:21,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:21,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810497463] [2023-12-02 16:42:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:21,500 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 16:42:21,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:21,501 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:21,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 16:42:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:21,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:42:21,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:21,621 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 16:42:21,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:21,622 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:21,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810497463] [2023-12-02 16:42:21,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810497463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:21,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:21,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:42:21,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651465926] [2023-12-02 16:42:21,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:21,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:42:21,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:21,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:42:21,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:42:21,623 INFO L87 Difference]: Start difference. First operand 1282 states and 1597 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:42:22,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:22,596 INFO L93 Difference]: Finished difference Result 1228 states and 1517 transitions. [2023-12-02 16:42:22,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:42:22,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 16:42:22,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:22,603 INFO L225 Difference]: With dead ends: 1228 [2023-12-02 16:42:22,603 INFO L226 Difference]: Without dead ends: 1228 [2023-12-02 16:42:22,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:42:22,604 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 70 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:22,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1837 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:42:22,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2023-12-02 16:42:22,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1228. [2023-12-02 16:42:22,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 699 states have (on average 2.1587982832618025) internal successors, (1509), 1222 states have internal predecessors, (1509), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:22,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1517 transitions. [2023-12-02 16:42:22,627 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1517 transitions. Word has length 12 [2023-12-02 16:42:22,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:22,628 INFO L495 AbstractCegarLoop]: Abstraction has 1228 states and 1517 transitions. [2023-12-02 16:42:22,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:42:22,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1517 transitions. [2023-12-02 16:42:22,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 16:42:22,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:22,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:42:22,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-02 16:42:22,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:22,830 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr365REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:22,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:22,830 INFO L85 PathProgramCache]: Analyzing trace with hash 777420563, now seen corresponding path program 1 times [2023-12-02 16:42:22,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:22,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299430356] [2023-12-02 16:42:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:22,831 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 16:42:22,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:22,832 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:22,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:22,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:42:22,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:22,966 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 16:42:22,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:22,966 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:22,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299430356] [2023-12-02 16:42:22,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299430356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:22,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:22,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:42:22,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213431408] [2023-12-02 16:42:22,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:22,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:42:22,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:22,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:42:22,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:42:22,968 INFO L87 Difference]: Start difference. First operand 1228 states and 1517 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 16:42:24,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:24,174 INFO L93 Difference]: Finished difference Result 1214 states and 1475 transitions. [2023-12-02 16:42:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:42:24,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2023-12-02 16:42:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:24,180 INFO L225 Difference]: With dead ends: 1214 [2023-12-02 16:42:24,180 INFO L226 Difference]: Without dead ends: 1214 [2023-12-02 16:42:24,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 16:42:24,181 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 58 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:24,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2712 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:42:24,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2023-12-02 16:42:24,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1212. [2023-12-02 16:42:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 697 states have (on average 2.101865136298422) internal successors, (1465), 1206 states have internal predecessors, (1465), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:24,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1473 transitions. [2023-12-02 16:42:24,204 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1473 transitions. Word has length 14 [2023-12-02 16:42:24,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:24,205 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 1473 transitions. [2023-12-02 16:42:24,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 16:42:24,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1473 transitions. [2023-12-02 16:42:24,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 16:42:24,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:24,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:42:24,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:24,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:24,406 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr632ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:24,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:24,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1520332036, now seen corresponding path program 1 times [2023-12-02 16:42:24,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:24,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747894290] [2023-12-02 16:42:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:24,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:42:24,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:24,408 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:24,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 16:42:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:24,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:42:24,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:24,557 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 16:42:24,558 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 16:42:24,559 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 16:42:24,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-12-02 16:42:24,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:42:24,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-12-02 16:42:24,632 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 16:42:24,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:24,633 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747894290] [2023-12-02 16:42:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747894290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:24,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:24,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:42:24,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80226564] [2023-12-02 16:42:24,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:24,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:42:24,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:24,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:42:24,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:42:24,635 INFO L87 Difference]: Start difference. First operand 1212 states and 1473 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 16:42:26,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:26,608 INFO L93 Difference]: Finished difference Result 1624 states and 1946 transitions. [2023-12-02 16:42:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:42:26,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2023-12-02 16:42:26,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:26,616 INFO L225 Difference]: With dead ends: 1624 [2023-12-02 16:42:26,616 INFO L226 Difference]: Without dead ends: 1624 [2023-12-02 16:42:26,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:42:26,617 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 402 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:26,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 2713 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 16:42:26,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2023-12-02 16:42:26,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1211. [2023-12-02 16:42:26,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 696 states have (on average 2.1020114942528734) internal successors, (1463), 1205 states have internal predecessors, (1463), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:26,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1471 transitions. [2023-12-02 16:42:26,635 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1471 transitions. Word has length 15 [2023-12-02 16:42:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:26,635 INFO L495 AbstractCegarLoop]: Abstraction has 1211 states and 1471 transitions. [2023-12-02 16:42:26,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 16:42:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1471 transitions. [2023-12-02 16:42:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 16:42:26,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:26,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:42:26,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-02 16:42:26,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:26,836 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:26,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:26,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1488099992, now seen corresponding path program 1 times [2023-12-02 16:42:26,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:26,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239475183] [2023-12-02 16:42:26,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:26,837 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 16:42:26,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:26,838 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:26,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:26,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:42:26,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:26,998 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 16:42:26,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:26,999 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:26,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239475183] [2023-12-02 16:42:26,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239475183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:26,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:26,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:42:26,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63050346] [2023-12-02 16:42:26,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:26,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:42:26,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:27,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:42:27,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:42:27,000 INFO L87 Difference]: Start difference. First operand 1211 states and 1471 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 16:42:27,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:27,754 INFO L93 Difference]: Finished difference Result 1157 states and 1391 transitions. [2023-12-02 16:42:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:42:27,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2023-12-02 16:42:27,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:27,760 INFO L225 Difference]: With dead ends: 1157 [2023-12-02 16:42:27,760 INFO L226 Difference]: Without dead ends: 1157 [2023-12-02 16:42:27,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 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 16:42:27,761 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 70 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:27,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1721 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:42:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2023-12-02 16:42:27,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2023-12-02 16:42:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 666 states have (on average 2.0765765765765765) internal successors, (1383), 1151 states have internal predecessors, (1383), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:27,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1391 transitions. [2023-12-02 16:42:27,785 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1391 transitions. Word has length 15 [2023-12-02 16:42:27,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:27,786 INFO L495 AbstractCegarLoop]: Abstraction has 1157 states and 1391 transitions. [2023-12-02 16:42:27,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 16:42:27,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1391 transitions. [2023-12-02 16:42:27,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 16:42:27,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:27,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:42:27,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Forceful destruction successful, exit code 0 [2023-12-02 16:42:27,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:27,988 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:27,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:27,989 INFO L85 PathProgramCache]: Analyzing trace with hash -160021551, now seen corresponding path program 1 times [2023-12-02 16:42:27,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:27,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493691447] [2023-12-02 16:42:27,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:27,990 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 16:42:27,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:27,990 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:27,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-02 16:42:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:28,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:42:28,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:28,151 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 16:42:28,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:28,151 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:28,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493691447] [2023-12-02 16:42:28,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493691447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:28,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:28,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:42:28,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030562529] [2023-12-02 16:42:28,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:28,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:42:28,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:28,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:42:28,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:42:28,153 INFO L87 Difference]: Start difference. First operand 1157 states and 1391 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 16:42:29,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:29,159 INFO L93 Difference]: Finished difference Result 1143 states and 1349 transitions. [2023-12-02 16:42:29,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:42:29,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2023-12-02 16:42:29,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:29,165 INFO L225 Difference]: With dead ends: 1143 [2023-12-02 16:42:29,165 INFO L226 Difference]: Without dead ends: 1143 [2023-12-02 16:42:29,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 16:42:29,166 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 58 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:29,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2538 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:42:29,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2023-12-02 16:42:29,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1141. [2023-12-02 16:42:29,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 664 states have (on average 2.016566265060241) internal successors, (1339), 1135 states have internal predecessors, (1339), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:29,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1347 transitions. [2023-12-02 16:42:29,180 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1347 transitions. Word has length 17 [2023-12-02 16:42:29,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:29,180 INFO L495 AbstractCegarLoop]: Abstraction has 1141 states and 1347 transitions. [2023-12-02 16:42:29,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 16:42:29,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1347 transitions. [2023-12-02 16:42:29,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 16:42:29,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:29,181 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] [2023-12-02 16:42:29,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Forceful destruction successful, exit code 0 [2023-12-02 16:42:29,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:29,382 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:29,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:29,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1373199777, now seen corresponding path program 1 times [2023-12-02 16:42:29,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:29,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233758364] [2023-12-02 16:42:29,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:29,383 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 16:42:29,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:29,383 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:29,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:29,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:42:29,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:29,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:42:29,637 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 16:42:29,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:29,638 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:29,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233758364] [2023-12-02 16:42:29,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233758364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:29,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:29,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:42:29,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134543447] [2023-12-02 16:42:29,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:29,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:42:29,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:29,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:42:29,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:42:29,640 INFO L87 Difference]: Start difference. First operand 1141 states and 1347 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 16:42:32,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:32,109 INFO L93 Difference]: Finished difference Result 1489 states and 1809 transitions. [2023-12-02 16:42:32,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:42:32,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-12-02 16:42:32,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:32,119 INFO L225 Difference]: With dead ends: 1489 [2023-12-02 16:42:32,119 INFO L226 Difference]: Without dead ends: 1489 [2023-12-02 16:42:32,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 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 16:42:32,120 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 746 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:32,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1220 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 16:42:32,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2023-12-02 16:42:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1137. [2023-12-02 16:42:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 664 states have (on average 2.0045180722891565) internal successors, (1331), 1131 states have internal predecessors, (1331), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1339 transitions. [2023-12-02 16:42:32,141 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1339 transitions. Word has length 31 [2023-12-02 16:42:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:32,141 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 1339 transitions. [2023-12-02 16:42:32,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 16:42:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1339 transitions. [2023-12-02 16:42:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 16:42:32,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:32,142 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] [2023-12-02 16:42:32,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:32,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:32,343 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:32,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:32,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1373199776, now seen corresponding path program 1 times [2023-12-02 16:42:32,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:32,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216128949] [2023-12-02 16:42:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:32,344 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 16:42:32,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:32,345 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:32,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-02 16:42:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:32,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:42:32,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:32,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:42:32,702 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 16:42:32,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:32,702 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:32,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216128949] [2023-12-02 16:42:32,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216128949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:32,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:32,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:42:32,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386698518] [2023-12-02 16:42:32,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:32,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:42:32,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:32,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:42:32,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:42:32,705 INFO L87 Difference]: Start difference. First operand 1137 states and 1339 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 16:42:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:36,759 INFO L93 Difference]: Finished difference Result 1591 states and 1890 transitions. [2023-12-02 16:42:36,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:42:36,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-12-02 16:42:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:36,769 INFO L225 Difference]: With dead ends: 1591 [2023-12-02 16:42:36,769 INFO L226 Difference]: Without dead ends: 1591 [2023-12-02 16:42:36,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 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 16:42:36,770 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 480 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:36,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 2080 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-02 16:42:36,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2023-12-02 16:42:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1133. [2023-12-02 16:42:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 664 states have (on average 1.9924698795180722) internal successors, (1323), 1127 states have internal predecessors, (1323), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1331 transitions. [2023-12-02 16:42:36,787 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1331 transitions. Word has length 31 [2023-12-02 16:42:36,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:36,787 INFO L495 AbstractCegarLoop]: Abstraction has 1133 states and 1331 transitions. [2023-12-02 16:42:36,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 16:42:36,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1331 transitions. [2023-12-02 16:42:36,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 16:42:36,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:36,788 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] [2023-12-02 16:42:36,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Forceful destruction successful, exit code 0 [2023-12-02 16:42:36,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:36,989 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:36,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:36,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1399884983, now seen corresponding path program 1 times [2023-12-02 16:42:36,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:36,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928593053] [2023-12-02 16:42:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:36,990 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 16:42:36,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:36,991 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:36,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:37,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:42:37,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:37,237 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 16:42:37,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:37,237 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:37,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928593053] [2023-12-02 16:42:37,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928593053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:37,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:37,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:42:37,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015946752] [2023-12-02 16:42:37,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:37,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:42:37,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:37,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:42:37,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:42:37,238 INFO L87 Difference]: Start difference. First operand 1133 states and 1331 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 16:42:38,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:38,328 INFO L93 Difference]: Finished difference Result 1121 states and 1311 transitions. [2023-12-02 16:42:38,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:42:38,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2023-12-02 16:42:38,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:38,334 INFO L225 Difference]: With dead ends: 1121 [2023-12-02 16:42:38,334 INFO L226 Difference]: Without dead ends: 1121 [2023-12-02 16:42:38,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 16:42:38,335 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 23 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:38,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2524 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:42:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2023-12-02 16:42:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1121. [2023-12-02 16:42:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 652 states have (on average 1.9984662576687116) internal successors, (1303), 1115 states have internal predecessors, (1303), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1311 transitions. [2023-12-02 16:42:38,353 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1311 transitions. Word has length 50 [2023-12-02 16:42:38,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:38,353 INFO L495 AbstractCegarLoop]: Abstraction has 1121 states and 1311 transitions. [2023-12-02 16:42:38,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 16:42:38,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1311 transitions. [2023-12-02 16:42:38,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 16:42:38,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:38,355 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] [2023-12-02 16:42:38,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:38,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:38,555 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:38,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:38,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1877618538, now seen corresponding path program 1 times [2023-12-02 16:42:38,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:38,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324076250] [2023-12-02 16:42:38,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:38,557 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 16:42:38,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:38,558 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:38,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-02 16:42:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:38,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 16:42:38,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:38,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:42:38,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:42:39,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 16:42:39,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 16:42:39,404 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:42:39,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 16:42:39,419 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 16:42:39,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:39,419 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:39,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324076250] [2023-12-02 16:42:39,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324076250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:39,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:39,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:42:39,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444774884] [2023-12-02 16:42:39,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:39,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:42:39,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:39,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:42:39,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:42:39,422 INFO L87 Difference]: Start difference. First operand 1121 states and 1311 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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 16:42:42,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:42,522 INFO L93 Difference]: Finished difference Result 1435 states and 1743 transitions. [2023-12-02 16:42:42,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:42:42,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2023-12-02 16:42:42,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:42,531 INFO L225 Difference]: With dead ends: 1435 [2023-12-02 16:42:42,531 INFO L226 Difference]: Without dead ends: 1435 [2023-12-02 16:42:42,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:42:42,531 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 968 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:42,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 627 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-02 16:42:42,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2023-12-02 16:42:42,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1060. [2023-12-02 16:42:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 629 states have (on average 1.9205087440381559) internal successors, (1208), 1054 states have internal predecessors, (1208), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1216 transitions. [2023-12-02 16:42:42,544 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1216 transitions. Word has length 54 [2023-12-02 16:42:42,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:42,545 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1216 transitions. [2023-12-02 16:42:42,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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 16:42:42,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1216 transitions. [2023-12-02 16:42:42,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:42:42,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:42,546 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] [2023-12-02 16:42:42,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-02 16:42:42,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:42,746 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:42,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:42,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1445350324, now seen corresponding path program 1 times [2023-12-02 16:42:42,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:42,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869261523] [2023-12-02 16:42:42,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:42,747 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 16:42:42,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:42,748 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:42,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:43,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:42:43,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:43,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:42:43,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:42:43,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-02 16:42:43,054 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 16:42:43,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:43,054 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:43,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869261523] [2023-12-02 16:42:43,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869261523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:43,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:43,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:42:43,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138406300] [2023-12-02 16:42:43,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:43,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:42:43,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:43,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:42:43,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:42:43,056 INFO L87 Difference]: Start difference. First operand 1060 states and 1216 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 16:42:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:46,049 INFO L93 Difference]: Finished difference Result 1059 states and 1215 transitions. [2023-12-02 16:42:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:42:46,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2023-12-02 16:42:46,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:46,054 INFO L225 Difference]: With dead ends: 1059 [2023-12-02 16:42:46,054 INFO L226 Difference]: Without dead ends: 1059 [2023-12-02 16:42:46,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:42:46,055 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 3 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:46,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2113 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-02 16:42:46,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2023-12-02 16:42:46,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1059. [2023-12-02 16:42:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 629 states have (on average 1.9189189189189189) internal successors, (1207), 1053 states have internal predecessors, (1207), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1215 transitions. [2023-12-02 16:42:46,066 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1215 transitions. Word has length 58 [2023-12-02 16:42:46,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:46,066 INFO L495 AbstractCegarLoop]: Abstraction has 1059 states and 1215 transitions. [2023-12-02 16:42:46,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 16:42:46,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1215 transitions. [2023-12-02 16:42:46,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:42:46,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:46,067 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] [2023-12-02 16:42:46,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:46,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:46,267 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:46,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:46,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1445350325, now seen corresponding path program 1 times [2023-12-02 16:42:46,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:46,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480321284] [2023-12-02 16:42:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:46,269 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 16:42:46,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:46,270 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:46,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Waiting until timeout for monitored process [2023-12-02 16:42:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:46,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 16:42:46,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:46,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:42:46,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 16:42:46,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:42:46,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-02 16:42:46,649 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 16:42:46,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:46,649 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:46,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480321284] [2023-12-02 16:42:46,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480321284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:46,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:46,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:42:46,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547387709] [2023-12-02 16:42:46,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:46,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:42:46,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:46,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:42:46,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:42:46,652 INFO L87 Difference]: Start difference. First operand 1059 states and 1215 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 16:42:50,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:50,348 INFO L93 Difference]: Finished difference Result 1058 states and 1214 transitions. [2023-12-02 16:42:50,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:42:50,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2023-12-02 16:42:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:50,355 INFO L225 Difference]: With dead ends: 1058 [2023-12-02 16:42:50,355 INFO L226 Difference]: Without dead ends: 1058 [2023-12-02 16:42:50,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:42:50,355 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 1 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:50,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2168 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-02 16:42:50,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2023-12-02 16:42:50,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1058. [2023-12-02 16:42:50,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 628 states have (on average 1.9203821656050954) internal successors, (1206), 1052 states have internal predecessors, (1206), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:42:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1214 transitions. [2023-12-02 16:42:50,367 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1214 transitions. Word has length 58 [2023-12-02 16:42:50,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:50,367 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1214 transitions. [2023-12-02 16:42:50,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 16:42:50,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1214 transitions. [2023-12-02 16:42:50,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 16:42:50,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:50,368 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] [2023-12-02 16:42:50,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 16:42:50,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:50,569 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:50,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:50,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1351376358, now seen corresponding path program 1 times [2023-12-02 16:42:50,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:50,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431847785] [2023-12-02 16:42:50,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:50,570 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 16:42:50,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:50,570 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:50,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:50,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:42:50,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:50,836 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 16:42:50,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:42:50,836 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:50,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431847785] [2023-12-02 16:42:50,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431847785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:50,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:42:50,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:42:50,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229883447] [2023-12-02 16:42:50,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:50,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:42:50,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:42:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:42:50,839 INFO L87 Difference]: Start difference. First operand 1058 states and 1214 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:42:51,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:51,862 INFO L93 Difference]: Finished difference Result 1060 states and 1217 transitions. [2023-12-02 16:42:51,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:42:51,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2023-12-02 16:42:51,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:51,871 INFO L225 Difference]: With dead ends: 1060 [2023-12-02 16:42:51,871 INFO L226 Difference]: Without dead ends: 1060 [2023-12-02 16:42:51,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 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 16:42:51,872 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 1 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:51,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2463 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:42:51,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2023-12-02 16:42:51,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1060. [2023-12-02 16:42:51,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 629 states have (on average 1.9205087440381559) internal successors, (1208), 1054 states have internal predecessors, (1208), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 16:42:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1217 transitions. [2023-12-02 16:42:51,893 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1217 transitions. Word has length 64 [2023-12-02 16:42:51,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:51,894 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1217 transitions. [2023-12-02 16:42:51,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:42:51,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1217 transitions. [2023-12-02 16:42:51,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 16:42:51,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:51,895 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] [2023-12-02 16:42:51,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:52,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:52,095 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:52,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash 979503454, now seen corresponding path program 1 times [2023-12-02 16:42:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:52,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30355640] [2023-12-02 16:42:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:52,096 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 16:42:52,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:52,097 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:52,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-02 16:42:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:52,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:42:52,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:42:52,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:42:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:42:52,447 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:52,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30355640] [2023-12-02 16:42:52,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30355640] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:42:52,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1380273486] [2023-12-02 16:42:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:52,447 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:42:52,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:42:52,448 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:42:52,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-02 16:42:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:52,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:42:52,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:42:52,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:42:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:42:52,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1380273486] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:42:52,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249492745] [2023-12-02 16:42:52,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:52,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:42:52,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:42:52,961 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:42:52,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 16:42:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:53,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:42:53,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:42:53,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:42:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:42:53,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249492745] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:42:53,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:42:53,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-12-02 16:42:53,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321443726] [2023-12-02 16:42:53,268 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:42:53,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:42:53,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:42:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:42:53,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:42:53,270 INFO L87 Difference]: Start difference. First operand 1060 states and 1217 transitions. Second operand has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:42:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:54,424 INFO L93 Difference]: Finished difference Result 1069 states and 1231 transitions. [2023-12-02 16:42:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:42:54,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 65 [2023-12-02 16:42:54,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:54,430 INFO L225 Difference]: With dead ends: 1069 [2023-12-02 16:42:54,430 INFO L226 Difference]: Without dead ends: 1069 [2023-12-02 16:42:54,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:42:54,431 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 7 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:54,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2461 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:42:54,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2023-12-02 16:42:54,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1068. [2023-12-02 16:42:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 636 states have (on average 1.919811320754717) internal successors, (1221), 1061 states have internal predecessors, (1221), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 16:42:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1230 transitions. [2023-12-02 16:42:54,454 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1230 transitions. Word has length 65 [2023-12-02 16:42:54,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:54,454 INFO L495 AbstractCegarLoop]: Abstraction has 1068 states and 1230 transitions. [2023-12-02 16:42:54,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:42:54,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1230 transitions. [2023-12-02 16:42:54,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 16:42:54,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:54,456 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 16:42:54,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-02 16:42:54,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2023-12-02 16:42:54,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 16:42:55,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:42:55,057 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:42:55,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:55,057 INFO L85 PathProgramCache]: Analyzing trace with hash 729109274, now seen corresponding path program 2 times [2023-12-02 16:42:55,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:42:55,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059524986] [2023-12-02 16:42:55,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:42:55,058 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 16:42:55,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:42:55,058 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:42:55,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-02 16:42:55,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:42:55,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:42:55,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:42:55,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:42:55,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:42:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:42:55,769 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:42:55,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059524986] [2023-12-02 16:42:55,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059524986] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:42:55,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [93508574] [2023-12-02 16:42:55,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:42:55,770 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:42:55,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:42:55,770 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:42:55,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-02 16:42:57,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:42:57,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:42:57,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:42:57,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:42:57,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:42:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:42:57,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [93508574] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:42:57,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819099929] [2023-12-02 16:42:57,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:42:57,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:42:57,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:42:57,350 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:42:57,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 16:43:19,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:43:19,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:43:19,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 16:43:19,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:43:19,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:43:19,454 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:43:19,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 16:43:19,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 16:43:19,731 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 16:43:19,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 16:43:19,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 16:43:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 16:43:19,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:43:19,932 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 16:43:19,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-12-02 16:43:19,942 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1649 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1649) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2023-12-02 16:43:19,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819099929] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:43:19,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2023-12-02 16:43:19,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 10] total 23 [2023-12-02 16:43:19,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45462980] [2023-12-02 16:43:19,945 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2023-12-02 16:43:19,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 16:43:19,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:43:19,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 16:43:19,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=467, Unknown=1, NotChecked=44, Total=600 [2023-12-02 16:43:19,947 INFO L87 Difference]: Start difference. First operand 1068 states and 1230 transitions. Second operand has 23 states, 20 states have (on average 6.65) internal successors, (133), 22 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 16:43:29,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:43:29,910 INFO L93 Difference]: Finished difference Result 1434 states and 1721 transitions. [2023-12-02 16:43:29,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 16:43:29,911 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 6.65) internal successors, (133), 22 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2023-12-02 16:43:29,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:43:29,916 INFO L225 Difference]: With dead ends: 1434 [2023-12-02 16:43:29,916 INFO L226 Difference]: Without dead ends: 1432 [2023-12-02 16:43:29,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=449, Invalid=2206, Unknown=1, NotChecked=100, Total=2756 [2023-12-02 16:43:29,918 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 658 mSDsluCounter, 5818 mSDsCounter, 0 mSdLazyCounter, 5639 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 6351 SdHoareTripleChecker+Invalid, 5670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 5639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:43:29,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 6351 Invalid, 5670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 5639 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-12-02 16:43:29,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-12-02 16:43:29,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1076. [2023-12-02 16:43:29,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 645 states have (on average 1.910077519379845) internal successors, (1232), 1069 states have internal predecessors, (1232), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 16:43:29,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1241 transitions. [2023-12-02 16:43:29,942 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1241 transitions. Word has length 68 [2023-12-02 16:43:29,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:43:29,942 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1241 transitions. [2023-12-02 16:43:29,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 6.65) internal successors, (133), 22 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 16:43:29,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1241 transitions. [2023-12-02 16:43:29,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 16:43:29,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:43:29,943 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:29,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 16:43:30,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2023-12-02 16:43:30,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 16:43:30,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:43:30,544 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:43:30,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:43:30,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1976757403, now seen corresponding path program 1 times [2023-12-02 16:43:30,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:43:30,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952136160] [2023-12-02 16:43:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:43:30,545 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 16:43:30,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:43:30,546 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:43:30,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Waiting until timeout for monitored process [2023-12-02 16:43:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:43:30,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 16:43:30,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:43:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:43:30,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:43:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:43:31,395 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:43:31,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952136160] [2023-12-02 16:43:31,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952136160] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:43:31,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1165075061] [2023-12-02 16:43:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:43:31,395 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:43:31,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:43:31,396 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:43:31,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-12-02 16:43:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:43:31,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 16:43:31,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:43:32,013 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:43:32,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:43:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:43:32,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1165075061] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:43:32,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776893621] [2023-12-02 16:43:32,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:43:32,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:43:32,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:43:32,119 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:43:32,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 16:43:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:43:32,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 16:43:32,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:43:32,517 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:43:32,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:43:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:43:33,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776893621] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:43:33,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:43:33,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2023-12-02 16:43:33,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947483581] [2023-12-02 16:43:33,246 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:43:33,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 16:43:33,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:43:33,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 16:43:33,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 16:43:33,248 INFO L87 Difference]: Start difference. First operand 1076 states and 1241 transitions. Second operand has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 16:43:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:43:39,230 INFO L93 Difference]: Finished difference Result 1106 states and 1286 transitions. [2023-12-02 16:43:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 16:43:39,231 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 74 [2023-12-02 16:43:39,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:43:39,235 INFO L225 Difference]: With dead ends: 1106 [2023-12-02 16:43:39,236 INFO L226 Difference]: Without dead ends: 1103 [2023-12-02 16:43:39,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1628, Invalid=3342, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 16:43:39,238 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 26 mSDsluCounter, 8998 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 9817 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:43:39,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 9817 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-02 16:43:39,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2023-12-02 16:43:39,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1094. [2023-12-02 16:43:39,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 663 states have (on average 1.8929110105580693) internal successors, (1255), 1087 states have internal predecessors, (1255), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 16:43:39,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1264 transitions. [2023-12-02 16:43:39,261 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1264 transitions. Word has length 74 [2023-12-02 16:43:39,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:43:39,261 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1264 transitions. [2023-12-02 16:43:39,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 16:43:39,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1264 transitions. [2023-12-02 16:43:39,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 16:43:39,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:43:39,262 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:39,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2023-12-02 16:43:39,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 16:43:39,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 16:43:39,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:43:39,863 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:43:39,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:43:39,864 INFO L85 PathProgramCache]: Analyzing trace with hash 171622299, now seen corresponding path program 2 times [2023-12-02 16:43:39,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:43:39,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561124946] [2023-12-02 16:43:39,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:43:39,864 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 16:43:39,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:43:39,865 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:43:39,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-02 16:43:40,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:43:40,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:43:40,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 16:43:40,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:43:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:43:40,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:43:43,354 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:43:43,354 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:43:43,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561124946] [2023-12-02 16:43:43,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561124946] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:43:43,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [365130582] [2023-12-02 16:43:43,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:43:43,355 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:43:43,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:43:43,356 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:43:43,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2023-12-02 16:43:45,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:43:45,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:43:45,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 16:43:45,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:43:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:43:45,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:43:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:43:45,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [365130582] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:43:45,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234807008] [2023-12-02 16:43:45,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:43:45,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:43:45,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:43:45,847 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:43:45,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 16:44:18,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:44:18,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:44:18,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 16:44:18,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:44:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:44:19,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:44:19,837 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:44:19,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234807008] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:44:19,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:44:19,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 26, 26] total 66 [2023-12-02 16:44:19,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418285566] [2023-12-02 16:44:19,838 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:44:19,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-02 16:44:19,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:44:19,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-02 16:44:19,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3202, Unknown=0, NotChecked=0, Total=4290 [2023-12-02 16:44:19,841 INFO L87 Difference]: Start difference. First operand 1094 states and 1264 transitions. Second operand has 66 states, 64 states have (on average 1.953125) internal successors, (125), 66 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:44:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:44:39,229 INFO L93 Difference]: Finished difference Result 1153 states and 1367 transitions. [2023-12-02 16:44:39,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-02 16:44:39,230 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 64 states have (on average 1.953125) internal successors, (125), 66 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 86 [2023-12-02 16:44:39,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:44:39,233 INFO L225 Difference]: With dead ends: 1153 [2023-12-02 16:44:39,233 INFO L226 Difference]: Without dead ends: 1150 [2023-12-02 16:44:39,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=3690, Invalid=8742, Unknown=0, NotChecked=0, Total=12432 [2023-12-02 16:44:39,238 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 52 mSDsluCounter, 19628 mSDsCounter, 0 mSdLazyCounter, 6005 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 20447 SdHoareTripleChecker+Invalid, 6073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 6005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:44:39,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 20447 Invalid, 6073 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 6005 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2023-12-02 16:44:39,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2023-12-02 16:44:39,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1130. [2023-12-02 16:44:39,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 699 states have (on average 1.8640915593705294) internal successors, (1303), 1123 states have internal predecessors, (1303), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 16:44:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1312 transitions. [2023-12-02 16:44:39,263 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1312 transitions. Word has length 86 [2023-12-02 16:44:39,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:44:39,264 INFO L495 AbstractCegarLoop]: Abstraction has 1130 states and 1312 transitions. [2023-12-02 16:44:39,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 64 states have (on average 1.953125) internal successors, (125), 66 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:44:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1312 transitions. [2023-12-02 16:44:39,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 16:44:39,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:44:39,265 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:44:39,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-12-02 16:44:39,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2023-12-02 16:44:39,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 16:44:39,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:44:39,866 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-12-02 16:44:39,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:44:39,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1125466853, now seen corresponding path program 3 times [2023-12-02 16:44:39,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:44:39,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18829105] [2023-12-02 16:44:39,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:44:39,868 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 16:44:39,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:44:39,869 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 16:44:39,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-02 16:44:42,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-12-02 16:44:42,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:44:42,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 108 conjunts are in the unsatisfiable core [2023-12-02 16:44:42,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:44:42,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:44:42,749 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:44:42,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 16:44:42,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:44:42,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 16:44:42,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 16:44:42,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-02 16:44:42,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:44:43,560 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:44:43,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 16:44:43,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 16:44:43,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 16:44:43,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:44:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:44:43,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:44:45,012 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3408 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3407 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3407) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3408) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3407 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3407) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv16 32)) (bvadd .cse1 (_ bv20 32))))))) is different from false [2023-12-02 16:44:45,018 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:44:45,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18829105] [2023-12-02 16:44:45,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18829105] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:44:45,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [542403613] [2023-12-02 16:44:45,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:44:45,018 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:44:45,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:44:45,019 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:44:45,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2023-12-02 16:50:14,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-12-02 16:50:14,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:50:14,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 109 conjunts are in the unsatisfiable core [2023-12-02 16:50:14,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:50:14,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 16:50:14,905 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 16:50:14,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 16:50:14,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 16:50:14,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 16:50:14,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 16:50:14,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-02 16:50:14,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:50:15,530 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 16:50:15,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 16:50:15,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 16:50:15,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 16:50:15,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 16:50:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 16:50:15,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:50:16,805 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3960 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3960) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3961 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3960 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3960) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 16:50:16,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [542403613] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:50:16,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419921492] [2023-12-02 16:50:16,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:50:16,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:50:16,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:50:16,811 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:50:16,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_813f03e0-9fb1-4433-aafc-4a9641ce6dea/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process