./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 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_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje --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 be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:49:04,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:49:04,517 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 06:49:04,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:49:04,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:49:04,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:49:04,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:49:04,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:49:04,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:49:04,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:49:04,585 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:49:04,585 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:49:04,586 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:49:04,586 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:49:04,587 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:49:04,588 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:49:04,591 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:49:04,592 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:49:04,592 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:49:04,592 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:49:04,593 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:49:04,594 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:49:04,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:49:04,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:49:04,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:49:04,596 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:49:04,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:49:04,597 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:49:04,597 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:49:04,597 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 06:49:04,602 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 06:49:04,612 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 06:49:04,613 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:49:04,613 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:49:04,613 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:49:04,614 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:49:04,614 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:49:04,614 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:49:04,615 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:49:04,615 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:49:04,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:49:04,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:49:04,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:49:04,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:49:04,619 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:49:04,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:49:04,619 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:49:04,619 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:49:04,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:49:04,620 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_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-11-09 06:49:04,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:49:05,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:49:05,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:49:05,012 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:49:05,013 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:49:05,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i Unable to find full path for "g++" [2024-11-09 06:49:07,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:49:07,842 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:49:07,843 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i [2024-11-09 06:49:07,878 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/data/5d9607925/88996343a9194a4cb2d9e7b1d0501c9d/FLAGd35d0c80e [2024-11-09 06:49:07,897 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/data/5d9607925/88996343a9194a4cb2d9e7b1d0501c9d [2024-11-09 06:49:07,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:49:07,901 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:49:07,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:49:07,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:49:07,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:49:07,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:49:07" (1/1) ... [2024-11-09 06:49:07,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b46e5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:07, skipping insertion in model container [2024-11-09 06:49:07,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:49:07" (1/1) ... [2024-11-09 06:49:07,983 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:49:08,641 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,686 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,691 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,698 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,718 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,816 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,817 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,824 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,825 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,829 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,836 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,837 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,839 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,846 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,847 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,851 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,852 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,854 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,855 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,861 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:08,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:49:08,886 ERROR L321 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) [2024-11-09 06:49:08,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a706d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:08, skipping insertion in model container [2024-11-09 06:49:08,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:49:08,889 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-09 06:49:08,897 INFO L158 Benchmark]: Toolchain (without parser) took 989.37ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 72.1MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-09 06:49:08,898 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 110.2MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:49:08,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 986.58ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 72.5MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-09 06:49:08,900 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 110.2MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 986.58ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 72.5MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 750]: 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_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje --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 be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:49:11,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:49:11,860 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-09 06:49:11,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:49:11,872 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:49:11,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:49:11,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:49:11,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:49:11,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:49:11,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:49:11,924 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:49:11,925 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:49:11,925 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:49:11,926 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:49:11,926 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:49:11,927 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:49:11,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:49:11,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:49:11,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:49:11,930 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:49:11,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:49:11,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:49:11,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:49:11,932 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 06:49:11,933 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 06:49:11,933 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 06:49:11,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:49:11,934 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:49:11,935 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 06:49:11,935 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:49:11,936 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 06:49:11,936 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:49:11,936 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:49:11,937 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:49:11,937 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:49:11,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:49:11,938 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:49:11,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:49:11,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:49:11,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:49:11,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:49:11,941 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 06:49:11,941 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 06:49:11,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:49:11,942 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:49:11,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-11-09 06:49:12,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:49:12,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:49:12,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:49:12,433 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:49:12,434 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:49:12,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i Unable to find full path for "g++" [2024-11-09 06:49:14,738 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:49:15,199 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:49:15,200 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i [2024-11-09 06:49:15,225 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/data/024c4e069/9b988cdc60454b4cbb64568f8c9767e5/FLAGaf4f593f0 [2024-11-09 06:49:15,244 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/data/024c4e069/9b988cdc60454b4cbb64568f8c9767e5 [2024-11-09 06:49:15,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:49:15,249 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:49:15,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:49:15,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:49:15,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:49:15,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:49:15" (1/1) ... [2024-11-09 06:49:15,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@757948d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:15, skipping insertion in model container [2024-11-09 06:49:15,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:49:15" (1/1) ... [2024-11-09 06:49:15,380 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:49:16,236 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,307 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,312 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,326 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,339 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,378 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,379 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,383 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,384 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,388 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,391 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,393 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,394 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,401 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,402 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,406 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,407 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,409 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,410 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,416 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:49:16,449 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-09 06:49:16,470 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:49:16,517 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,555 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,563 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,570 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,583 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,628 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,629 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,638 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,639 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,641 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,643 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,648 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,650 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,657 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,662 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,665 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,666 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,667 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,668 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,680 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:49:16,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:49:16,711 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:49:16,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:49:16,871 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:49:16,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:16 WrapperNode [2024-11-09 06:49:16,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:49:16,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:49:16,874 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:49:16,874 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:49:16,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:16" (1/1) ... [2024-11-09 06:49:16,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:16" (1/1) ... [2024-11-09 06:49:17,052 INFO L138 Inliner]: procedures = 180, calls = 325, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1177 [2024-11-09 06:49:17,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:49:17,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:49:17,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:49:17,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:49:17,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:16" (1/1) ... [2024-11-09 06:49:17,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:16" (1/1) ... [2024-11-09 06:49:17,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:16" (1/1) ... [2024-11-09 06:49:17,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:16" (1/1) ... [2024-11-09 06:49:17,149 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:16" (1/1) ... [2024-11-09 06:49:17,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:16" (1/1) ... [2024-11-09 06:49:17,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:16" (1/1) ... [2024-11-09 06:49:17,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:16" (1/1) ... [2024-11-09 06:49:17,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:49:17,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:49:17,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:49:17,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:49:17,192 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:16" (1/1) ... [2024-11-09 06:49:17,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:49:17,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:49:17,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:49:17,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:49:17,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-11-09 06:49:17,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 06:49:17,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 06:49:17,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 06:49:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 06:49:17,323 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 06:49:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:49:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:49:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 06:49:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:49:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:49:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-09 06:49:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:49:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 06:49:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:49:17,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:49:17,653 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:49:17,656 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:49:17,662 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 06:49:24,546 INFO L? ?]: Removed 1300 outVars from TransFormulas that were not future-live. [2024-11-09 06:49:24,546 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:49:24,618 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:49:24,622 INFO L316 CfgBuilder]: Removed 66 assume(true) statements. [2024-11-09 06:49:24,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:49:24 BoogieIcfgContainer [2024-11-09 06:49:24,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:49:24,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:49:24,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:49:24,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:49:24,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:49:15" (1/3) ... [2024-11-09 06:49:24,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34667795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:49:24, skipping insertion in model container [2024-11-09 06:49:24,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:49:16" (2/3) ... [2024-11-09 06:49:24,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34667795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:49:24, skipping insertion in model container [2024-11-09 06:49:24,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:49:24" (3/3) ... [2024-11-09 06:49:24,640 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test3-2.i [2024-11-09 06:49:24,660 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:49:24,661 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 630 error locations. [2024-11-09 06:49:24,777 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:49:24,787 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@440c91d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:49:24,787 INFO L334 AbstractCegarLoop]: Starting to check reachability of 630 error locations. [2024-11-09 06:49:24,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 1265 states, 630 states have (on average 2.2253968253968255) internal successors, (1402), 1258 states have internal predecessors, (1402), 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) [2024-11-09 06:49:24,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 06:49:24,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:24,816 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 06:49:24,817 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:49:24,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:24,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1202725, now seen corresponding path program 1 times [2024-11-09 06:49:24,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:49:24,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132200426] [2024-11-09 06:49:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:24,847 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 [2024-11-09 06:49:24,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:49:24,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:49:24,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:25,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:49:25,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:25,150 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 [2024-11-09 06:49:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:49:25,175 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:25,176 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:49:25,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132200426] [2024-11-09 06:49:25,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132200426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:25,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:25,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:49:25,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204871926] [2024-11-09 06:49:25,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:25,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:49:25,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:49:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:49:25,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:49:25,246 INFO L87 Difference]: Start difference. First operand has 1265 states, 630 states have (on average 2.2253968253968255) internal successors, (1402), 1258 states have internal predecessors, (1402), 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 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-09 06:49:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:28,550 INFO L93 Difference]: Finished difference Result 1442 states and 1529 transitions. [2024-11-09 06:49:28,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:49:28,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-11-09 06:49:28,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:28,579 INFO L225 Difference]: With dead ends: 1442 [2024-11-09 06:49:28,579 INFO L226 Difference]: Without dead ends: 1440 [2024-11-09 06:49:28,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:49:28,586 INFO L432 NwaCegarLoop]: 767 mSDtfsCounter, 1169 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:28,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 934 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 06:49:28,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2024-11-09 06:49:28,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1252. [2024-11-09 06:49:28,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 633 states have (on average 2.0837282780410744) internal successors, (1319), 1244 states have internal predecessors, (1319), 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) [2024-11-09 06:49:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1329 transitions. [2024-11-09 06:49:28,708 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1329 transitions. Word has length 4 [2024-11-09 06:49:28,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:28,708 INFO L471 AbstractCegarLoop]: Abstraction has 1252 states and 1329 transitions. [2024-11-09 06:49:28,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-09 06:49:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1329 transitions. [2024-11-09 06:49:28,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 06:49:28,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:28,709 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 06:49:28,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Ended with exit code 0 [2024-11-09 06:49:28,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:49:28,911 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:49:28,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:28,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1202726, now seen corresponding path program 1 times [2024-11-09 06:49:28,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:49:28,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623668934] [2024-11-09 06:49:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:28,913 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 [2024-11-09 06:49:28,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:49:28,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:49:28,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:29,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:49:29,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:29,102 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 [2024-11-09 06:49:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:49:29,137 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:29,137 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:49:29,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623668934] [2024-11-09 06:49:29,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623668934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:29,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:29,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:49:29,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894303264] [2024-11-09 06:49:29,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:29,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:49:29,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:49:29,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:49:29,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:49:29,142 INFO L87 Difference]: Start difference. First operand 1252 states and 1329 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-09 06:49:34,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:34,023 INFO L93 Difference]: Finished difference Result 1861 states and 1987 transitions. [2024-11-09 06:49:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:49:34,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-11-09 06:49:34,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:34,032 INFO L225 Difference]: With dead ends: 1861 [2024-11-09 06:49:34,033 INFO L226 Difference]: Without dead ends: 1861 [2024-11-09 06:49:34,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:49:34,035 INFO L432 NwaCegarLoop]: 1031 mSDtfsCounter, 652 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:34,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1734 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-09 06:49:34,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-09 06:49:34,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1464. [2024-11-09 06:49:34,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 845 states have (on average 2.0662721893491125) internal successors, (1746), 1455 states have internal predecessors, (1746), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:49:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1758 transitions. [2024-11-09 06:49:34,100 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1758 transitions. Word has length 4 [2024-11-09 06:49:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:34,100 INFO L471 AbstractCegarLoop]: Abstraction has 1464 states and 1758 transitions. [2024-11-09 06:49:34,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-09 06:49:34,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1758 transitions. [2024-11-09 06:49:34,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 06:49:34,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:34,102 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 06:49:34,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:34,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:49:34,303 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr628ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:49:34,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:34,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1204564, now seen corresponding path program 1 times [2024-11-09 06:49:34,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:49:34,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230347880] [2024-11-09 06:49:34,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:34,307 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 [2024-11-09 06:49:34,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:49:34,311 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:49:34,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:34,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 06:49:34,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:34,553 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46| (_ bv0 1)) |c_#valid|))) is different from true [2024-11-09 06:49:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:49:34,554 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:34,555 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:49:34,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230347880] [2024-11-09 06:49:34,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230347880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:34,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:34,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:49:34,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960884728] [2024-11-09 06:49:34,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:34,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:49:34,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:49:34,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:49:34,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-09 06:49:34,562 INFO L87 Difference]: Start difference. First operand 1464 states and 1758 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2024-11-09 06:49:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:38,192 INFO L93 Difference]: Finished difference Result 2047 states and 2386 transitions. [2024-11-09 06:49:38,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:49:38,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2024-11-09 06:49:38,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:38,201 INFO L225 Difference]: With dead ends: 2047 [2024-11-09 06:49:38,201 INFO L226 Difference]: Without dead ends: 2046 [2024-11-09 06:49:38,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-09 06:49:38,203 INFO L432 NwaCegarLoop]: 1049 mSDtfsCounter, 624 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1948 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:38,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1737 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 916 Invalid, 0 Unknown, 1948 Unchecked, 3.5s Time] [2024-11-09 06:49:38,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2024-11-09 06:49:38,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1464. [2024-11-09 06:49:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 845 states have (on average 2.06508875739645) internal successors, (1745), 1455 states have internal predecessors, (1745), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:49:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1757 transitions. [2024-11-09 06:49:38,245 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1757 transitions. Word has length 4 [2024-11-09 06:49:38,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:38,246 INFO L471 AbstractCegarLoop]: Abstraction has 1464 states and 1757 transitions. [2024-11-09 06:49:38,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2024-11-09 06:49:38,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1757 transitions. [2024-11-09 06:49:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 06:49:38,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:38,247 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:49:38,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:38,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:49:38,448 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:49:38,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:38,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1654943313, now seen corresponding path program 1 times [2024-11-09 06:49:38,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:49:38,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176445670] [2024-11-09 06:49:38,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:38,450 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 [2024-11-09 06:49:38,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:49:38,453 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:49:38,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:38,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:49:38,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:38,637 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 [2024-11-09 06:49:38,651 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 [2024-11-09 06:49:38,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:49:38,773 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 [2024-11-09 06:49:38,811 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:49:38,811 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 [2024-11-09 06:49:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:49:38,856 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:38,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:49:38,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176445670] [2024-11-09 06:49:38,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176445670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:38,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:38,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:49:38,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026454804] [2024-11-09 06:49:38,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:38,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:49:38,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:49:38,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:49:38,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:49:38,859 INFO L87 Difference]: Start difference. First operand 1464 states and 1757 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:49:43,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:43,399 INFO L93 Difference]: Finished difference Result 1646 states and 1950 transitions. [2024-11-09 06:49:43,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:49:43,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 06:49:43,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:43,411 INFO L225 Difference]: With dead ends: 1646 [2024-11-09 06:49:43,412 INFO L226 Difference]: Without dead ends: 1646 [2024-11-09 06:49:43,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:49:43,414 INFO L432 NwaCegarLoop]: 448 mSDtfsCounter, 2626 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2631 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:43,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2631 Valid, 547 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 06:49:43,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2024-11-09 06:49:43,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1240. [2024-11-09 06:49:43,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 633 states have (on average 2.060031595576619) internal successors, (1304), 1232 states have internal predecessors, (1304), 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) [2024-11-09 06:49:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1314 transitions. [2024-11-09 06:49:43,452 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1314 transitions. Word has length 8 [2024-11-09 06:49:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:43,452 INFO L471 AbstractCegarLoop]: Abstraction has 1240 states and 1314 transitions. [2024-11-09 06:49:43,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:49:43,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1314 transitions. [2024-11-09 06:49:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 06:49:43,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:43,453 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:49:43,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:43,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:49:43,654 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:49:43,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:43,655 INFO L85 PathProgramCache]: Analyzing trace with hash 236364828, now seen corresponding path program 1 times [2024-11-09 06:49:43,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:49:43,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910737950] [2024-11-09 06:49:43,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:43,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:49:43,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:49:43,658 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:49:43,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:43,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:49:43,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:43,802 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 [2024-11-09 06:49:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:49:43,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:43,820 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:49:43,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910737950] [2024-11-09 06:49:43,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910737950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:43,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:43,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:49:43,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26988786] [2024-11-09 06:49:43,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:43,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:49:43,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:49:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:49:43,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:49:43,823 INFO L87 Difference]: Start difference. First operand 1240 states and 1314 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:49:46,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:46,525 INFO L93 Difference]: Finished difference Result 1579 states and 1686 transitions. [2024-11-09 06:49:46,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:49:46,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 06:49:46,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:46,530 INFO L225 Difference]: With dead ends: 1579 [2024-11-09 06:49:46,530 INFO L226 Difference]: Without dead ends: 1579 [2024-11-09 06:49:46,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:49:46,531 INFO L432 NwaCegarLoop]: 1179 mSDtfsCounter, 937 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:46,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 1534 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 06:49:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2024-11-09 06:49:46,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1192. [2024-11-09 06:49:46,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 633 states have (on average 1.9842022116903633) internal successors, (1256), 1184 states have internal predecessors, (1256), 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) [2024-11-09 06:49:46,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1266 transitions. [2024-11-09 06:49:46,558 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1266 transitions. Word has length 9 [2024-11-09 06:49:46,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:46,558 INFO L471 AbstractCegarLoop]: Abstraction has 1192 states and 1266 transitions. [2024-11-09 06:49:46,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:49:46,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1266 transitions. [2024-11-09 06:49:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 06:49:46,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:46,559 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:49:46,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:46,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:49:46,760 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:49:46,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:46,761 INFO L85 PathProgramCache]: Analyzing trace with hash 236364829, now seen corresponding path program 1 times [2024-11-09 06:49:46,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:49:46,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387818259] [2024-11-09 06:49:46,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:46,761 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 [2024-11-09 06:49:46,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:49:46,763 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:49:46,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:46,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:49:46,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:46,920 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 [2024-11-09 06:49:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:49:46,951 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:46,951 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:49:46,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387818259] [2024-11-09 06:49:46,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387818259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:46,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:46,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:49:46,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025933656] [2024-11-09 06:49:46,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:46,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:49:46,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:49:46,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:49:46,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:49:46,952 INFO L87 Difference]: Start difference. First operand 1192 states and 1266 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:49:50,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:50,417 INFO L93 Difference]: Finished difference Result 1666 states and 1776 transitions. [2024-11-09 06:49:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:49:50,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 06:49:50,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:50,423 INFO L225 Difference]: With dead ends: 1666 [2024-11-09 06:49:50,423 INFO L226 Difference]: Without dead ends: 1666 [2024-11-09 06:49:50,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:49:50,424 INFO L432 NwaCegarLoop]: 1371 mSDtfsCounter, 697 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:50,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1907 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 06:49:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2024-11-09 06:49:50,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1219. [2024-11-09 06:49:50,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 670 states have (on average 1.9701492537313432) internal successors, (1320), 1211 states have internal predecessors, (1320), 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) [2024-11-09 06:49:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1330 transitions. [2024-11-09 06:49:50,451 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1330 transitions. Word has length 9 [2024-11-09 06:49:50,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:50,452 INFO L471 AbstractCegarLoop]: Abstraction has 1219 states and 1330 transitions. [2024-11-09 06:49:50,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:49:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1330 transitions. [2024-11-09 06:49:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 06:49:50,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:50,453 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:49:50,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:50,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:49:50,654 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:49:50,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:50,654 INFO L85 PathProgramCache]: Analyzing trace with hash 997976629, now seen corresponding path program 1 times [2024-11-09 06:49:50,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:49:50,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401746911] [2024-11-09 06:49:50,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:50,655 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 [2024-11-09 06:49:50,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:49:50,658 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:49:50,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:50,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:49:50,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:49:50,908 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:50,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:49:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401746911] [2024-11-09 06:49:50,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401746911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:50,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:50,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:49:50,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452175404] [2024-11-09 06:49:50,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:50,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:49:50,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:49:50,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:49:50,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:49:50,911 INFO L87 Difference]: Start difference. First operand 1219 states and 1330 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-09 06:49:51,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:51,926 INFO L93 Difference]: Finished difference Result 1822 states and 2021 transitions. [2024-11-09 06:49:51,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:49:51,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-09 06:49:51,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:51,933 INFO L225 Difference]: With dead ends: 1822 [2024-11-09 06:49:51,933 INFO L226 Difference]: Without dead ends: 1822 [2024-11-09 06:49:51,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:49:51,934 INFO L432 NwaCegarLoop]: 1384 mSDtfsCounter, 640 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 3781 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:51,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 3781 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 06:49:51,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2024-11-09 06:49:51,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1472. [2024-11-09 06:49:51,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 922 states have (on average 1.940347071583514) internal successors, (1789), 1463 states have internal predecessors, (1789), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:49:51,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1801 transitions. [2024-11-09 06:49:51,964 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1801 transitions. Word has length 13 [2024-11-09 06:49:51,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:51,965 INFO L471 AbstractCegarLoop]: Abstraction has 1472 states and 1801 transitions. [2024-11-09 06:49:51,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-09 06:49:51,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1801 transitions. [2024-11-09 06:49:51,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 06:49:51,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:51,966 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:49:51,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-09 06:49:52,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:49:52,167 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:49:52,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:52,168 INFO L85 PathProgramCache]: Analyzing trace with hash 441370107, now seen corresponding path program 1 times [2024-11-09 06:49:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:49:52,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285320441] [2024-11-09 06:49:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:52,168 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 [2024-11-09 06:49:52,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:49:52,170 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:49:52,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:52,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:49:52,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:49:52,342 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:52,343 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:49:52,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285320441] [2024-11-09 06:49:52,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285320441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:52,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:52,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:49:52,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934532192] [2024-11-09 06:49:52,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:52,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:49:52,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:49:52,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:49:52,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:49:52,344 INFO L87 Difference]: Start difference. First operand 1472 states and 1801 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) [2024-11-09 06:49:52,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:52,374 INFO L93 Difference]: Finished difference Result 1410 states and 1711 transitions. [2024-11-09 06:49:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:49:52,374 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 [2024-11-09 06:49:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:52,378 INFO L225 Difference]: With dead ends: 1410 [2024-11-09 06:49:52,378 INFO L226 Difference]: Without dead ends: 1410 [2024-11-09 06:49:52,378 INFO L431 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 [2024-11-09 06:49:52,379 INFO L432 NwaCegarLoop]: 1190 mSDtfsCounter, 71 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:52,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 2317 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:49:52,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2024-11-09 06:49:52,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1410. [2024-11-09 06:49:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 884 states have (on average 1.9219457013574661) internal successors, (1699), 1401 states have internal predecessors, (1699), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:49:52,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1711 transitions. [2024-11-09 06:49:52,421 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1711 transitions. Word has length 15 [2024-11-09 06:49:52,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:52,422 INFO L471 AbstractCegarLoop]: Abstraction has 1410 states and 1711 transitions. [2024-11-09 06:49:52,422 INFO L472 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) [2024-11-09 06:49:52,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1711 transitions. [2024-11-09 06:49:52,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 06:49:52,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:52,423 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:49:52,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:52,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:49:52,627 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr354REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:49:52,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:52,628 INFO L85 PathProgramCache]: Analyzing trace with hash 799354906, now seen corresponding path program 1 times [2024-11-09 06:49:52,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:49:52,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199308040] [2024-11-09 06:49:52,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:52,629 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 [2024-11-09 06:49:52,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:49:52,635 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:49:52,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:52,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:49:52,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:49:52,857 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:52,857 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:49:52,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199308040] [2024-11-09 06:49:52,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199308040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:52,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:52,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:49:52,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900976109] [2024-11-09 06:49:52,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:52,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:49:52,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:49:52,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:49:52,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:49:52,859 INFO L87 Difference]: Start difference. First operand 1410 states and 1711 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-09 06:49:52,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:52,968 INFO L93 Difference]: Finished difference Result 1380 states and 1653 transitions. [2024-11-09 06:49:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:49:52,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2024-11-09 06:49:52,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:52,973 INFO L225 Difference]: With dead ends: 1380 [2024-11-09 06:49:52,973 INFO L226 Difference]: Without dead ends: 1380 [2024-11-09 06:49:52,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:49:52,975 INFO L432 NwaCegarLoop]: 1145 mSDtfsCounter, 48 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:52,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3409 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:49:52,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2024-11-09 06:49:52,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1380. [2024-11-09 06:49:52,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 868 states have (on average 1.890552995391705) internal successors, (1641), 1371 states have internal predecessors, (1641), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:49:53,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1653 transitions. [2024-11-09 06:49:53,005 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1653 transitions. Word has length 16 [2024-11-09 06:49:53,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:53,005 INFO L471 AbstractCegarLoop]: Abstraction has 1380 states and 1653 transitions. [2024-11-09 06:49:53,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-09 06:49:53,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1653 transitions. [2024-11-09 06:49:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 06:49:53,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:53,007 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:49:53,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:53,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:49:53,208 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr628ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:49:53,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:53,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1393695911, now seen corresponding path program 1 times [2024-11-09 06:49:53,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:49:53,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871732013] [2024-11-09 06:49:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:53,208 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 [2024-11-09 06:49:53,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:49:53,210 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:49:53,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:53,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 06:49:53,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:53,584 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_47| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47|)))) is different from true [2024-11-09 06:49:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:49:53,585 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:53,586 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:49:53,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871732013] [2024-11-09 06:49:53,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871732013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:53,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:53,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:49:53,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923318603] [2024-11-09 06:49:53,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:53,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:49:53,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:49:53,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:49:53,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-09 06:49:53,588 INFO L87 Difference]: Start difference. First operand 1380 states and 1653 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) 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) [2024-11-09 06:49:56,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:56,262 INFO L93 Difference]: Finished difference Result 1680 states and 2028 transitions. [2024-11-09 06:49:56,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:49:56,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) 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 [2024-11-09 06:49:56,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:56,266 INFO L225 Difference]: With dead ends: 1680 [2024-11-09 06:49:56,266 INFO L226 Difference]: Without dead ends: 1672 [2024-11-09 06:49:56,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-09 06:49:56,267 INFO L432 NwaCegarLoop]: 1064 mSDtfsCounter, 246 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1429 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:56,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 1701 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 639 Invalid, 0 Unknown, 1429 Unchecked, 2.6s Time] [2024-11-09 06:49:56,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2024-11-09 06:49:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1438. [2024-11-09 06:49:56,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 925 states have (on average 1.8497297297297297) internal successors, (1711), 1428 states have internal predecessors, (1711), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 06:49:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1725 transitions. [2024-11-09 06:49:56,302 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1725 transitions. Word has length 17 [2024-11-09 06:49:56,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:56,302 INFO L471 AbstractCegarLoop]: Abstraction has 1438 states and 1725 transitions. [2024-11-09 06:49:56,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) 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) [2024-11-09 06:49:56,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1725 transitions. [2024-11-09 06:49:56,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 06:49:56,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:56,304 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:49:56,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:56,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:49:56,505 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:49:56,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:56,505 INFO L85 PathProgramCache]: Analyzing trace with hash -539745472, now seen corresponding path program 1 times [2024-11-09 06:49:56,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:49:56,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133677802] [2024-11-09 06:49:56,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:56,506 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 [2024-11-09 06:49:56,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:49:56,507 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:49:56,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:56,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:49:56,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:49:56,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:56,786 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:49:56,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133677802] [2024-11-09 06:49:56,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133677802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:56,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:56,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:49:56,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360884618] [2024-11-09 06:49:56,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:56,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:49:56,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:49:56,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:49:56,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:49:56,789 INFO L87 Difference]: Start difference. First operand 1438 states and 1725 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-11-09 06:49:56,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:56,841 INFO L93 Difference]: Finished difference Result 1376 states and 1635 transitions. [2024-11-09 06:49:56,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:49:56,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2024-11-09 06:49:56,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:56,845 INFO L225 Difference]: With dead ends: 1376 [2024-11-09 06:49:56,846 INFO L226 Difference]: Without dead ends: 1376 [2024-11-09 06:49:56,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:49:56,847 INFO L432 NwaCegarLoop]: 1110 mSDtfsCounter, 71 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:56,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 2157 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:49:56,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2024-11-09 06:49:56,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1376. [2024-11-09 06:49:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 887 states have (on average 1.8275084554678693) internal successors, (1621), 1366 states have internal predecessors, (1621), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 06:49:56,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1635 transitions. [2024-11-09 06:49:56,891 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1635 transitions. Word has length 20 [2024-11-09 06:49:56,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:56,892 INFO L471 AbstractCegarLoop]: Abstraction has 1376 states and 1635 transitions. [2024-11-09 06:49:56,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-11-09 06:49:56,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1635 transitions. [2024-11-09 06:49:56,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 06:49:56,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:56,897 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:49:56,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-09 06:49:57,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:49:57,102 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:49:57,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash 449542154, now seen corresponding path program 1 times [2024-11-09 06:49:57,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:49:57,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504817333] [2024-11-09 06:49:57,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:57,106 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 [2024-11-09 06:49:57,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:49:57,110 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:49:57,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:57,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:49:57,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:49:57,411 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:57,415 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:49:57,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504817333] [2024-11-09 06:49:57,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504817333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:57,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:57,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:49:57,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744859505] [2024-11-09 06:49:57,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:57,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:49:57,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:49:57,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:49:57,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:49:57,417 INFO L87 Difference]: Start difference. First operand 1376 states and 1635 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-09 06:49:57,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:49:57,542 INFO L93 Difference]: Finished difference Result 1346 states and 1577 transitions. [2024-11-09 06:49:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:49:57,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2024-11-09 06:49:57,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:49:57,546 INFO L225 Difference]: With dead ends: 1346 [2024-11-09 06:49:57,546 INFO L226 Difference]: Without dead ends: 1346 [2024-11-09 06:49:57,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:49:57,547 INFO L432 NwaCegarLoop]: 1065 mSDtfsCounter, 48 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:49:57,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3169 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:49:57,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2024-11-09 06:49:57,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1346. [2024-11-09 06:49:57,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 871 states have (on average 1.7944890929965558) internal successors, (1563), 1336 states have internal predecessors, (1563), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 06:49:57,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1577 transitions. [2024-11-09 06:49:57,573 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1577 transitions. Word has length 21 [2024-11-09 06:49:57,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:49:57,574 INFO L471 AbstractCegarLoop]: Abstraction has 1346 states and 1577 transitions. [2024-11-09 06:49:57,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-09 06:49:57,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1577 transitions. [2024-11-09 06:49:57,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 06:49:57,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:49:57,575 INFO L215 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] [2024-11-09 06:49:57,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:57,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:49:57,780 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr368REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:49:57,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:49:57,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1379197992, now seen corresponding path program 1 times [2024-11-09 06:49:57,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:49:57,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589022087] [2024-11-09 06:49:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:49:57,782 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 [2024-11-09 06:49:57,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:49:57,785 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:49:57,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:49:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:49:57,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:49:57,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:49:57,995 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 [2024-11-09 06:49:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:49:58,130 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:49:58,130 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:49:58,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589022087] [2024-11-09 06:49:58,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589022087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:49:58,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:49:58,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:49:58,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887582588] [2024-11-09 06:49:58,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:49:58,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:49:58,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:49:58,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:49:58,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:49:58,133 INFO L87 Difference]: Start difference. First operand 1346 states and 1577 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-09 06:50:01,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:50:01,287 INFO L93 Difference]: Finished difference Result 1542 states and 1775 transitions. [2024-11-09 06:50:01,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:50:01,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2024-11-09 06:50:01,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:50:01,294 INFO L225 Difference]: With dead ends: 1542 [2024-11-09 06:50:01,294 INFO L226 Difference]: Without dead ends: 1542 [2024-11-09 06:50:01,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:50:01,296 INFO L432 NwaCegarLoop]: 657 mSDtfsCounter, 971 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:50:01,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1387 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 06:50:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2024-11-09 06:50:01,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1342. [2024-11-09 06:50:01,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 871 states have (on average 1.7807118254879448) internal successors, (1551), 1332 states have internal predecessors, (1551), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 06:50:01,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1565 transitions. [2024-11-09 06:50:01,325 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1565 transitions. Word has length 30 [2024-11-09 06:50:01,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:50:01,325 INFO L471 AbstractCegarLoop]: Abstraction has 1342 states and 1565 transitions. [2024-11-09 06:50:01,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-09 06:50:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1565 transitions. [2024-11-09 06:50:01,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 06:50:01,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:50:01,327 INFO L215 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] [2024-11-09 06:50:01,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:01,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:50:01,528 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr369REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:50:01,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:50:01,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1379197993, now seen corresponding path program 1 times [2024-11-09 06:50:01,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:50:01,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868824176] [2024-11-09 06:50:01,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:01,530 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 [2024-11-09 06:50:01,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:50:01,534 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:50:01,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:50:01,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 06:50:01,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:01,770 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 [2024-11-09 06:50:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:02,101 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:50:02,101 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:50:02,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868824176] [2024-11-09 06:50:02,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868824176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:50:02,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:50:02,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:50:02,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654168989] [2024-11-09 06:50:02,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:50:02,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:50:02,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:50:02,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:50:02,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:50:02,104 INFO L87 Difference]: Start difference. First operand 1342 states and 1565 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-09 06:50:07,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:50:07,191 INFO L93 Difference]: Finished difference Result 2025 states and 2386 transitions. [2024-11-09 06:50:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:50:07,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2024-11-09 06:50:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:50:07,197 INFO L225 Difference]: With dead ends: 2025 [2024-11-09 06:50:07,197 INFO L226 Difference]: Without dead ends: 2025 [2024-11-09 06:50:07,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:50:07,197 INFO L432 NwaCegarLoop]: 839 mSDtfsCounter, 578 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:50:07,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 1972 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-09 06:50:07,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2024-11-09 06:50:07,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 1657. [2024-11-09 06:50:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1184 states have (on average 1.7922297297297298) internal successors, (2122), 1645 states have internal predecessors, (2122), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 06:50:07,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2140 transitions. [2024-11-09 06:50:07,230 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2140 transitions. Word has length 30 [2024-11-09 06:50:07,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:50:07,231 INFO L471 AbstractCegarLoop]: Abstraction has 1657 states and 2140 transitions. [2024-11-09 06:50:07,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-09 06:50:07,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2140 transitions. [2024-11-09 06:50:07,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 06:50:07,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:50:07,232 INFO L215 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] [2024-11-09 06:50:07,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:07,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:50:07,433 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:50:07,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:50:07,434 INFO L85 PathProgramCache]: Analyzing trace with hash -925089160, now seen corresponding path program 1 times [2024-11-09 06:50:07,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:50:07,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098475211] [2024-11-09 06:50:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:07,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:50:07,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:50:07,439 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:50:07,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:50:07,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:50:07,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:07,716 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 [2024-11-09 06:50:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:07,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:50:07,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:50:07,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098475211] [2024-11-09 06:50:07,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098475211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:50:07,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:50:07,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:50:07,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3793999] [2024-11-09 06:50:07,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:50:07,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:50:07,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:50:07,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:50:07,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:50:07,869 INFO L87 Difference]: Start difference. First operand 1657 states and 2140 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-09 06:50:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:50:11,796 INFO L93 Difference]: Finished difference Result 2108 states and 2716 transitions. [2024-11-09 06:50:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:50:11,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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 35 [2024-11-09 06:50:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:50:11,805 INFO L225 Difference]: With dead ends: 2108 [2024-11-09 06:50:11,806 INFO L226 Difference]: Without dead ends: 2108 [2024-11-09 06:50:11,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:50:11,807 INFO L432 NwaCegarLoop]: 1003 mSDtfsCounter, 784 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:50:11,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 2020 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 06:50:11,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2024-11-09 06:50:11,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1653. [2024-11-09 06:50:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1184 states have (on average 1.785472972972973) internal successors, (2114), 1641 states have internal predecessors, (2114), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 06:50:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2132 transitions. [2024-11-09 06:50:11,860 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2132 transitions. Word has length 35 [2024-11-09 06:50:11,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:50:11,861 INFO L471 AbstractCegarLoop]: Abstraction has 1653 states and 2132 transitions. [2024-11-09 06:50:11,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-09 06:50:11,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2132 transitions. [2024-11-09 06:50:11,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 06:50:11,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:50:11,864 INFO L215 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] [2024-11-09 06:50:11,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:12,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:50:12,065 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:50:12,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:50:12,066 INFO L85 PathProgramCache]: Analyzing trace with hash -925089159, now seen corresponding path program 1 times [2024-11-09 06:50:12,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:50:12,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988910307] [2024-11-09 06:50:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:12,067 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 [2024-11-09 06:50:12,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:50:12,072 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:50:12,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:50:12,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 06:50:12,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:12,374 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 [2024-11-09 06:50:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:12,674 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:50:12,674 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:50:12,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988910307] [2024-11-09 06:50:12,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988910307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:50:12,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:50:12,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:50:12,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997293865] [2024-11-09 06:50:12,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:50:12,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:50:12,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:50:12,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:50:12,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:50:12,676 INFO L87 Difference]: Start difference. First operand 1653 states and 2132 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-09 06:50:17,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:50:17,743 INFO L93 Difference]: Finished difference Result 2168 states and 2740 transitions. [2024-11-09 06:50:17,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:50:17,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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 35 [2024-11-09 06:50:17,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:50:17,753 INFO L225 Difference]: With dead ends: 2168 [2024-11-09 06:50:17,753 INFO L226 Difference]: Without dead ends: 2168 [2024-11-09 06:50:17,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:50:17,754 INFO L432 NwaCegarLoop]: 1284 mSDtfsCounter, 540 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:50:17,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 2559 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-09 06:50:17,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2024-11-09 06:50:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 1649. [2024-11-09 06:50:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1184 states have (on average 1.7787162162162162) internal successors, (2106), 1637 states have internal predecessors, (2106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 06:50:17,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2124 transitions. [2024-11-09 06:50:17,785 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2124 transitions. Word has length 35 [2024-11-09 06:50:17,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:50:17,786 INFO L471 AbstractCegarLoop]: Abstraction has 1649 states and 2124 transitions. [2024-11-09 06:50:17,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-09 06:50:17,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2124 transitions. [2024-11-09 06:50:17,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 06:50:17,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:50:17,788 INFO L215 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] [2024-11-09 06:50:17,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:17,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:50:17,992 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr414REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:50:17,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:50:17,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1490216113, now seen corresponding path program 1 times [2024-11-09 06:50:17,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:50:17,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793846776] [2024-11-09 06:50:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:17,994 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 [2024-11-09 06:50:17,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:50:17,995 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:50:17,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:50:18,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:50:18,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:18,289 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:50:18,289 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:50:18,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793846776] [2024-11-09 06:50:18,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793846776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:50:18,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:50:18,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:50:18,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876292981] [2024-11-09 06:50:18,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:50:18,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:50:18,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:50:18,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:50:18,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:50:18,292 INFO L87 Difference]: Start difference. First operand 1649 states and 2124 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-11-09 06:50:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:50:18,382 INFO L93 Difference]: Finished difference Result 1619 states and 2074 transitions. [2024-11-09 06:50:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:50:18,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2024-11-09 06:50:18,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:50:18,394 INFO L225 Difference]: With dead ends: 1619 [2024-11-09 06:50:18,398 INFO L226 Difference]: Without dead ends: 1619 [2024-11-09 06:50:18,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:50:18,399 INFO L432 NwaCegarLoop]: 1055 mSDtfsCounter, 27 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:50:18,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3128 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:50:18,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2024-11-09 06:50:18,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1619. [2024-11-09 06:50:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1154 states have (on average 1.781629116117851) internal successors, (2056), 1607 states have internal predecessors, (2056), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 06:50:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2074 transitions. [2024-11-09 06:50:18,438 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2074 transitions. Word has length 49 [2024-11-09 06:50:18,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:50:18,440 INFO L471 AbstractCegarLoop]: Abstraction has 1619 states and 2074 transitions. [2024-11-09 06:50:18,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-11-09 06:50:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2074 transitions. [2024-11-09 06:50:18,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 06:50:18,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:50:18,442 INFO L215 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] [2024-11-09 06:50:18,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 06:50:18,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:50:18,642 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:50:18,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:50:18,643 INFO L85 PathProgramCache]: Analyzing trace with hash -391326663, now seen corresponding path program 1 times [2024-11-09 06:50:18,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:50:18,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536748424] [2024-11-09 06:50:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:18,644 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 [2024-11-09 06:50:18,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:50:18,647 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:50:18,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:50:18,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:50:18,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:19,050 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:50:19,050 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:50:19,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536748424] [2024-11-09 06:50:19,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536748424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:50:19,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:50:19,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:50:19,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981271897] [2024-11-09 06:50:19,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:50:19,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:50:19,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:50:19,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:50:19,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:50:19,053 INFO L87 Difference]: Start difference. First operand 1619 states and 2074 transitions. Second operand has 4 states, 4 states have (on average 13.5) 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) [2024-11-09 06:50:19,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:50:19,165 INFO L93 Difference]: Finished difference Result 1607 states and 2054 transitions. [2024-11-09 06:50:19,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:50:19,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) 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 [2024-11-09 06:50:19,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:50:19,174 INFO L225 Difference]: With dead ends: 1607 [2024-11-09 06:50:19,178 INFO L226 Difference]: Without dead ends: 1607 [2024-11-09 06:50:19,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:50:19,180 INFO L432 NwaCegarLoop]: 1051 mSDtfsCounter, 21 mSDsluCounter, 2071 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:50:19,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3122 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:50:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2024-11-09 06:50:19,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1607. [2024-11-09 06:50:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1142 states have (on average 1.7828371278458843) internal successors, (2036), 1595 states have internal predecessors, (2036), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 06:50:19,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2054 transitions. [2024-11-09 06:50:19,228 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2054 transitions. Word has length 54 [2024-11-09 06:50:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:50:19,228 INFO L471 AbstractCegarLoop]: Abstraction has 1607 states and 2054 transitions. [2024-11-09 06:50:19,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) 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) [2024-11-09 06:50:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2054 transitions. [2024-11-09 06:50:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 06:50:19,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:50:19,230 INFO L215 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] [2024-11-09 06:50:19,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2024-11-09 06:50:19,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:50:19,430 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr414REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:50:19,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:50:19,431 INFO L85 PathProgramCache]: Analyzing trace with hash -227924733, now seen corresponding path program 1 times [2024-11-09 06:50:19,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:50:19,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138783461] [2024-11-09 06:50:19,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:19,432 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 [2024-11-09 06:50:19,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:50:19,433 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:50:19,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:50:19,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:50:19,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:19,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:19,760 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:50:19,761 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:50:19,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138783461] [2024-11-09 06:50:19,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138783461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:50:19,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:50:19,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:50:19,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097873579] [2024-11-09 06:50:19,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:50:19,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:50:19,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:50:19,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:50:19,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:50:19,764 INFO L87 Difference]: Start difference. First operand 1607 states and 2054 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-11-09 06:50:19,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:50:19,910 INFO L93 Difference]: Finished difference Result 1601 states and 1718 transitions. [2024-11-09 06:50:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:50:19,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2024-11-09 06:50:19,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:50:19,915 INFO L225 Difference]: With dead ends: 1601 [2024-11-09 06:50:19,916 INFO L226 Difference]: Without dead ends: 1601 [2024-11-09 06:50:19,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:50:19,917 INFO L432 NwaCegarLoop]: 1342 mSDtfsCounter, 316 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:50:19,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 2339 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:50:19,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2024-11-09 06:50:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1243. [2024-11-09 06:50:19,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 780 states have (on average 1.7) internal successors, (1326), 1233 states have internal predecessors, (1326), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 06:50:19,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1340 transitions. [2024-11-09 06:50:19,942 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1340 transitions. Word has length 57 [2024-11-09 06:50:19,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:50:19,943 INFO L471 AbstractCegarLoop]: Abstraction has 1243 states and 1340 transitions. [2024-11-09 06:50:19,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-11-09 06:50:19,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1340 transitions. [2024-11-09 06:50:19,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 06:50:19,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:50:19,944 INFO L215 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] [2024-11-09 06:50:19,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:20,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:50:20,148 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:50:20,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:50:20,149 INFO L85 PathProgramCache]: Analyzing trace with hash -293651529, now seen corresponding path program 1 times [2024-11-09 06:50:20,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:50:20,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101864675] [2024-11-09 06:50:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:20,150 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 [2024-11-09 06:50:20,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:50:20,151 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:50:20,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-11-09 06:50:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:50:20,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:50:20,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:20,558 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:20,559 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:20,560 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 06:50:20,564 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 [2024-11-09 06:50:20,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:50:20,660 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 [2024-11-09 06:50:20,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:20,759 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:50:20,759 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:50:20,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101864675] [2024-11-09 06:50:20,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101864675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:50:20,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:50:20,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:50:20,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648597620] [2024-11-09 06:50:20,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:50:20,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:50:20,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:50:20,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:50:20,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:50:20,763 INFO L87 Difference]: Start difference. First operand 1243 states and 1340 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-11-09 06:50:22,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:50:22,347 INFO L93 Difference]: Finished difference Result 1468 states and 1581 transitions. [2024-11-09 06:50:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:50:22,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 60 [2024-11-09 06:50:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:50:22,351 INFO L225 Difference]: With dead ends: 1468 [2024-11-09 06:50:22,351 INFO L226 Difference]: Without dead ends: 1465 [2024-11-09 06:50:22,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:50:22,352 INFO L432 NwaCegarLoop]: 1034 mSDtfsCounter, 1094 mSDsluCounter, 2735 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 3769 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:50:22,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 3769 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 06:50:22,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2024-11-09 06:50:22,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1190. [2024-11-09 06:50:22,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 728 states have (on average 1.7486263736263736) internal successors, (1273), 1181 states have internal predecessors, (1273), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:50:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1285 transitions. [2024-11-09 06:50:22,376 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1285 transitions. Word has length 60 [2024-11-09 06:50:22,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:50:22,376 INFO L471 AbstractCegarLoop]: Abstraction has 1190 states and 1285 transitions. [2024-11-09 06:50:22,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-11-09 06:50:22,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1285 transitions. [2024-11-09 06:50:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 06:50:22,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:50:22,378 INFO L215 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] [2024-11-09 06:50:22,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 06:50:22,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:50:22,579 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:50:22,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:50:22,580 INFO L85 PathProgramCache]: Analyzing trace with hash -775502995, now seen corresponding path program 1 times [2024-11-09 06:50:22,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:50:22,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719799981] [2024-11-09 06:50:22,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:22,581 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 [2024-11-09 06:50:22,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:50:22,583 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:50:22,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-11-09 06:50:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:50:23,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:50:23,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:23,036 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 [2024-11-09 06:50:23,045 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 [2024-11-09 06:50:23,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:50:23,980 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 [2024-11-09 06:50:24,007 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:50:24,008 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 [2024-11-09 06:50:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:24,026 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:50:24,026 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:50:24,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719799981] [2024-11-09 06:50:24,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719799981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:50:24,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:50:24,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:50:24,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045444340] [2024-11-09 06:50:24,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:50:24,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:50:24,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:50:24,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:50:24,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:50:24,030 INFO L87 Difference]: Start difference. First operand 1190 states and 1285 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-11-09 06:50:28,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:50:28,267 INFO L93 Difference]: Finished difference Result 1521 states and 1641 transitions. [2024-11-09 06:50:28,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:50:28,267 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), 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 62 [2024-11-09 06:50:28,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:50:28,271 INFO L225 Difference]: With dead ends: 1521 [2024-11-09 06:50:28,272 INFO L226 Difference]: Without dead ends: 1521 [2024-11-09 06:50:28,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:50:28,273 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 1041 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:50:28,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 832 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 06:50:28,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2024-11-09 06:50:28,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1115. [2024-11-09 06:50:28,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 691 states have (on average 1.6801736613603473) internal successors, (1161), 1106 states have internal predecessors, (1161), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:50:28,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1173 transitions. [2024-11-09 06:50:28,296 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1173 transitions. Word has length 62 [2024-11-09 06:50:28,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:50:28,296 INFO L471 AbstractCegarLoop]: Abstraction has 1115 states and 1173 transitions. [2024-11-09 06:50:28,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-11-09 06:50:28,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1173 transitions. [2024-11-09 06:50:28,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 06:50:28,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:50:28,298 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:50:28,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-11-09 06:50:28,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:50:28,499 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:50:28,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:50:28,501 INFO L85 PathProgramCache]: Analyzing trace with hash -489791377, now seen corresponding path program 1 times [2024-11-09 06:50:28,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:50:28,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791883463] [2024-11-09 06:50:28,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:28,502 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 [2024-11-09 06:50:28,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:50:28,506 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:50:28,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:50:28,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:50:28,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:28,915 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 [2024-11-09 06:50:28,941 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 [2024-11-09 06:50:28,987 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 [2024-11-09 06:50:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:29,010 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:50:29,010 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:50:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791883463] [2024-11-09 06:50:29,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791883463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:50:29,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:50:29,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:50:29,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073366421] [2024-11-09 06:50:29,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:50:29,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:50:29,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:50:29,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:50:29,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:50:29,012 INFO L87 Difference]: Start difference. First operand 1115 states and 1173 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-09 06:50:33,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:50:33,073 INFO L93 Difference]: Finished difference Result 1114 states and 1172 transitions. [2024-11-09 06:50:33,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:50:33,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2024-11-09 06:50:33,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:50:33,078 INFO L225 Difference]: With dead ends: 1114 [2024-11-09 06:50:33,078 INFO L226 Difference]: Without dead ends: 1114 [2024-11-09 06:50:33,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:50:33,080 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 2 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:50:33,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2636 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-09 06:50:33,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2024-11-09 06:50:33,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1114. [2024-11-09 06:50:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 691 states have (on average 1.678726483357453) internal successors, (1160), 1105 states have internal predecessors, (1160), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:50:33,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1172 transitions. [2024-11-09 06:50:33,099 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1172 transitions. Word has length 67 [2024-11-09 06:50:33,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:50:33,100 INFO L471 AbstractCegarLoop]: Abstraction has 1114 states and 1172 transitions. [2024-11-09 06:50:33,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-09 06:50:33,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1172 transitions. [2024-11-09 06:50:33,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 06:50:33,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:50:33,101 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:50:33,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:33,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:50:33,302 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:50:33,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:50:33,303 INFO L85 PathProgramCache]: Analyzing trace with hash -489791376, now seen corresponding path program 1 times [2024-11-09 06:50:33,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:50:33,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169215109] [2024-11-09 06:50:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:33,305 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 [2024-11-09 06:50:33,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:50:33,307 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:50:33,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-11-09 06:50:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:50:33,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:50:33,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:33,768 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 [2024-11-09 06:50:33,804 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 [2024-11-09 06:50:33,819 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 [2024-11-09 06:50:33,885 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 [2024-11-09 06:50:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:33,911 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:50:33,911 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:50:33,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169215109] [2024-11-09 06:50:33,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169215109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:50:33,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:50:33,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:50:33,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19055976] [2024-11-09 06:50:33,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:50:33,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:50:33,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:50:33,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:50:33,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:50:33,913 INFO L87 Difference]: Start difference. First operand 1114 states and 1172 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-09 06:50:38,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:50:38,881 INFO L93 Difference]: Finished difference Result 1113 states and 1171 transitions. [2024-11-09 06:50:38,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:50:38,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2024-11-09 06:50:38,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:50:38,884 INFO L225 Difference]: With dead ends: 1113 [2024-11-09 06:50:38,885 INFO L226 Difference]: Without dead ends: 1113 [2024-11-09 06:50:38,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:50:38,886 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 1 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:50:38,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2676 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-09 06:50:38,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2024-11-09 06:50:38,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1113. [2024-11-09 06:50:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 690 states have (on average 1.6797101449275362) internal successors, (1159), 1104 states have internal predecessors, (1159), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:50:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1171 transitions. [2024-11-09 06:50:38,900 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1171 transitions. Word has length 67 [2024-11-09 06:50:38,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:50:38,910 INFO L471 AbstractCegarLoop]: Abstraction has 1113 states and 1171 transitions. [2024-11-09 06:50:38,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-09 06:50:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1171 transitions. [2024-11-09 06:50:38,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 06:50:38,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:50:38,911 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:50:38,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2024-11-09 06:50:39,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:50:39,112 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:50:39,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:50:39,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1790301686, now seen corresponding path program 1 times [2024-11-09 06:50:39,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:50:39,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739251937] [2024-11-09 06:50:39,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:39,114 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 [2024-11-09 06:50:39,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:50:39,118 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:50:39,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-11-09 06:50:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:50:39,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:50:39,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:39,527 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:50:39,527 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:50:39,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739251937] [2024-11-09 06:50:39,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739251937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:50:39,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:50:39,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:50:39,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893134811] [2024-11-09 06:50:39,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:50:39,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:50:39,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:50:39,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:50:39,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:50:39,531 INFO L87 Difference]: Start difference. First operand 1113 states and 1171 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-09 06:50:39,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:50:39,603 INFO L93 Difference]: Finished difference Result 1116 states and 1175 transitions. [2024-11-09 06:50:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:50:39,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 75 [2024-11-09 06:50:39,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:50:39,610 INFO L225 Difference]: With dead ends: 1116 [2024-11-09 06:50:39,611 INFO L226 Difference]: Without dead ends: 1116 [2024-11-09 06:50:39,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:50:39,612 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 0 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:50:39,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3067 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:50:39,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2024-11-09 06:50:39,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1116. [2024-11-09 06:50:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 692 states have (on average 1.6791907514450868) internal successors, (1162), 1107 states have internal predecessors, (1162), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 06:50:39,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1175 transitions. [2024-11-09 06:50:39,638 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1175 transitions. Word has length 75 [2024-11-09 06:50:39,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:50:39,638 INFO L471 AbstractCegarLoop]: Abstraction has 1116 states and 1175 transitions. [2024-11-09 06:50:39,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-09 06:50:39,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1175 transitions. [2024-11-09 06:50:39,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 06:50:39,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:50:39,640 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:50:39,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2024-11-09 06:50:39,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:50:39,841 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:50:39,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:50:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash 420185869, now seen corresponding path program 1 times [2024-11-09 06:50:39,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:50:39,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791747067] [2024-11-09 06:50:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:39,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:50:39,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:50:39,846 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:50:39,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:50:40,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:50:40,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:40,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:40,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:50:40,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:40,501 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:50:40,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791747067] [2024-11-09 06:50:40,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791747067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:50:40,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [11389337] [2024-11-09 06:50:40,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:40,502 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:50:40,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:50:40,506 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:50:40,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2024-11-09 06:50:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:50:41,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:50:41,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:41,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:41,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:50:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:41,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [11389337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:50:41,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372054882] [2024-11-09 06:50:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:50:41,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:50:41,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:50:41,346 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:50:41,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 06:50:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:50:41,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:50:41,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:41,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:50:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:41,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372054882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:50:41,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:50:41,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2024-11-09 06:50:41,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987117335] [2024-11-09 06:50:41,909 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:50:41,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:50:41,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:50:41,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:50:41,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:50:41,912 INFO L87 Difference]: Start difference. First operand 1116 states and 1175 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2024-11-09 06:50:42,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:50:42,159 INFO L93 Difference]: Finished difference Result 1128 states and 1192 transitions. [2024-11-09 06:50:42,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:50:42,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 76 [2024-11-09 06:50:42,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:50:42,164 INFO L225 Difference]: With dead ends: 1128 [2024-11-09 06:50:42,164 INFO L226 Difference]: Without dead ends: 1128 [2024-11-09 06:50:42,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:50:42,165 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 8 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:50:42,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3070 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:50:42,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2024-11-09 06:50:42,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1126. [2024-11-09 06:50:42,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 701 states have (on average 1.6790299572039944) internal successors, (1177), 1116 states have internal predecessors, (1177), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 06:50:42,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1190 transitions. [2024-11-09 06:50:42,187 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1190 transitions. Word has length 76 [2024-11-09 06:50:42,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:50:42,188 INFO L471 AbstractCegarLoop]: Abstraction has 1126 states and 1190 transitions. [2024-11-09 06:50:42,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2024-11-09 06:50:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1190 transitions. [2024-11-09 06:50:42,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-09 06:50:42,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:50:42,189 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:50:42,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2024-11-09 06:50:42,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 06:50:42,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-09 06:50:42,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:50:42,792 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:50:42,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:50:42,792 INFO L85 PathProgramCache]: Analyzing trace with hash 723837878, now seen corresponding path program 2 times [2024-11-09 06:50:42,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:50:42,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027228999] [2024-11-09 06:50:42,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:50:42,793 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 [2024-11-09 06:50:42,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:50:42,799 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:50:42,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:50:43,453 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:50:43,453 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:50:43,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:50:43,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:43,564 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:43,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:50:43,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:43,811 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:50:43,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027228999] [2024-11-09 06:50:43,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027228999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:50:43,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [88012738] [2024-11-09 06:50:43,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:50:43,812 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:50:43,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:50:43,814 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:50:43,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-09 06:50:46,025 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:50:46,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:50:46,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:50:46,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:50:46,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:46,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:50:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:50:46,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [88012738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:50:46,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891361708] [2024-11-09 06:50:46,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:50:46,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:50:46,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:50:46,201 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:50:46,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 06:51:08,634 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:51:08,634 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:51:08,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 06:51:08,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:08,673 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 [2024-11-09 06:51:08,937 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:51:08,938 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 [2024-11-09 06:51:08,992 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 [2024-11-09 06:51:09,445 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:51:09,445 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 [2024-11-09 06:51:09,540 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 [2024-11-09 06:51:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:51:09,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:51:09,778 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-09 06:51:09,778 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 [2024-11-09 06:51:09,791 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1826 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1826) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2024-11-09 06:51:09,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891361708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:51:09,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-09 06:51:09,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 10] total 23 [2024-11-09 06:51:09,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267751277] [2024-11-09 06:51:09,795 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-09 06:51:09,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 06:51:09,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:51:09,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 06:51:09,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=467, Unknown=1, NotChecked=44, Total=600 [2024-11-09 06:51:09,798 INFO L87 Difference]: Start difference. First operand 1126 states and 1190 transitions. Second operand has 23 states, 22 states have (on average 7.0) internal successors, (154), 22 states have internal predecessors, (154), 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) [2024-11-09 06:51:22,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:51:22,522 INFO L93 Difference]: Finished difference Result 1511 states and 1607 transitions. [2024-11-09 06:51:22,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 06:51:22,523 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.0) internal successors, (154), 22 states have internal predecessors, (154), 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 79 [2024-11-09 06:51:22,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:51:22,526 INFO L225 Difference]: With dead ends: 1511 [2024-11-09 06:51:22,526 INFO L226 Difference]: Without dead ends: 1507 [2024-11-09 06:51:22,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=407, Invalid=2046, Unknown=1, NotChecked=96, Total=2550 [2024-11-09 06:51:22,528 INFO L432 NwaCegarLoop]: 663 mSDtfsCounter, 727 mSDsluCounter, 7006 mSDsCounter, 0 mSdLazyCounter, 5638 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 7669 SdHoareTripleChecker+Invalid, 5669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 5638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:51:22,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 7669 Invalid, 5669 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 5638 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2024-11-09 06:51:22,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2024-11-09 06:51:22,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1134. [2024-11-09 06:51:22,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 710 states have (on average 1.6732394366197183) internal successors, (1188), 1124 states have internal predecessors, (1188), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 06:51:22,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1201 transitions. [2024-11-09 06:51:22,576 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1201 transitions. Word has length 79 [2024-11-09 06:51:22,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:51:22,580 INFO L471 AbstractCegarLoop]: Abstraction has 1134 states and 1201 transitions. [2024-11-09 06:51:22,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.0) internal successors, (154), 22 states have internal predecessors, (154), 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) [2024-11-09 06:51:22,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1201 transitions. [2024-11-09 06:51:22,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 06:51:22,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:51:22,581 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:51:22,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-09 06:51:22,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:51:22,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-11-09 06:51:23,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:51:23,182 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:51:23,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:51:23,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1697403991, now seen corresponding path program 1 times [2024-11-09 06:51:23,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:51:23,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124741373] [2024-11-09 06:51:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:51:23,184 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 [2024-11-09 06:51:23,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:51:23,187 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:51:23,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 06:51:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:51:23,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 06:51:23,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:51:23,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:51:24,484 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:51:24,485 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:51:24,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124741373] [2024-11-09 06:51:24,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124741373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:51:24,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [166894378] [2024-11-09 06:51:24,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:51:24,486 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:51:24,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:51:24,489 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:51:24,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-09 06:51:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:51:25,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 06:51:25,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:51:25,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:51:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:51:25,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [166894378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:51:25,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789481646] [2024-11-09 06:51:25,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:51:25,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:51:25,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:51:25,426 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:51:25,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 06:51:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:51:25,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 06:51:25,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:51:25,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:51:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:51:26,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789481646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:51:26,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:51:26,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2024-11-09 06:51:26,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304801406] [2024-11-09 06:51:26,831 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:51:26,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 06:51:26,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:51:26,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 06:51:26,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 06:51:26,833 INFO L87 Difference]: Start difference. First operand 1134 states and 1201 transitions. Second operand has 38 states, 38 states have (on average 2.8947368421052633) internal successors, (110), 38 states have internal predecessors, (110), 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) [2024-11-09 06:51:29,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:51:29,407 INFO L93 Difference]: Finished difference Result 1160 states and 1242 transitions. [2024-11-09 06:51:29,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 06:51:29,408 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8947368421052633) internal successors, (110), 38 states have internal predecessors, (110), 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 85 [2024-11-09 06:51:29,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:51:29,411 INFO L225 Difference]: With dead ends: 1160 [2024-11-09 06:51:29,411 INFO L226 Difference]: Without dead ends: 1154 [2024-11-09 06:51:29,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1168, Invalid=2254, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 06:51:29,412 INFO L432 NwaCegarLoop]: 1024 mSDtfsCounter, 14 mSDsluCounter, 18359 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 19383 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:51:29,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 19383 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 06:51:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2024-11-09 06:51:29,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1152. [2024-11-09 06:51:29,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 728 states have (on average 1.6634615384615385) internal successors, (1211), 1142 states have internal predecessors, (1211), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 06:51:29,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1224 transitions. [2024-11-09 06:51:29,436 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1224 transitions. Word has length 85 [2024-11-09 06:51:29,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:51:29,437 INFO L471 AbstractCegarLoop]: Abstraction has 1152 states and 1224 transitions. [2024-11-09 06:51:29,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8947368421052633) internal successors, (110), 38 states have internal predecessors, (110), 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) [2024-11-09 06:51:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1224 transitions. [2024-11-09 06:51:29,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 06:51:29,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:51:29,438 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:51:29,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2024-11-09 06:51:29,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-09 06:51:29,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 06:51:30,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:51:30,039 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:51:30,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:51:30,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1409830295, now seen corresponding path program 2 times [2024-11-09 06:51:30,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:51:30,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382844581] [2024-11-09 06:51:30,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:51:30,041 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 [2024-11-09 06:51:30,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:51:30,042 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:51:30,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2024-11-09 06:51:30,632 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:51:30,633 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:51:30,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 06:51:30,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:51:31,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:51:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:51:33,338 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:51:33,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382844581] [2024-11-09 06:51:33,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382844581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:51:33,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1827156369] [2024-11-09 06:51:33,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:51:33,339 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:51:33,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:51:33,340 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:51:33,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-09 06:51:35,579 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:51:35,579 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:51:35,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 06:51:35,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:51:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:51:35,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:51:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:51:36,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1827156369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:51:36,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523177167] [2024-11-09 06:51:36,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:51:36,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:51:36,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:51:36,052 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:51:36,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-09 06:52:18,505 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:52:18,505 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:52:18,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-09 06:52:18,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:52:18,789 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:52:18,789 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 [2024-11-09 06:52:18,800 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 [2024-11-09 06:52:18,944 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 [2024-11-09 06:52:18,955 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 [2024-11-09 06:52:19,406 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 22 treesize of output 10 [2024-11-09 06:52:19,414 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 9 treesize of output 3 [2024-11-09 06:52:20,540 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:52:20,540 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 62 treesize of output 57 [2024-11-09 06:52:20,549 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 30 treesize of output 13 [2024-11-09 06:52:20,779 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 31 treesize of output 13 [2024-11-09 06:52:20,786 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 9 treesize of output 3 [2024-11-09 06:52:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-09 06:52:20,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:52:23,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523177167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:52:23,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-09 06:52:23,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 8] total 57 [2024-11-09 06:52:23,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602352270] [2024-11-09 06:52:23,108 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-09 06:52:23,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-09 06:52:23,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:52:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-09 06:52:23,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=698, Invalid=2814, Unknown=28, NotChecked=0, Total=3540 [2024-11-09 06:52:23,110 INFO L87 Difference]: Start difference. First operand 1152 states and 1224 transitions. Second operand has 57 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 57 states have internal predecessors, (187), 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) [2024-11-09 06:53:16,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:53:16,391 INFO L93 Difference]: Finished difference Result 1564 states and 1691 transitions. [2024-11-09 06:53:16,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-09 06:53:16,392 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 57 states have internal predecessors, (187), 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 97 [2024-11-09 06:53:16,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:53:16,394 INFO L225 Difference]: With dead ends: 1564 [2024-11-09 06:53:16,395 INFO L226 Difference]: Without dead ends: 1556 [2024-11-09 06:53:16,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 427 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3110 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=3102, Invalid=14682, Unknown=38, NotChecked=0, Total=17822 [2024-11-09 06:53:16,400 INFO L432 NwaCegarLoop]: 668 mSDtfsCounter, 754 mSDsluCounter, 19302 mSDsCounter, 0 mSdLazyCounter, 16127 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 19970 SdHoareTripleChecker+Invalid, 16207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 16127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:53:16,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 19970 Invalid, 16207 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [80 Valid, 16127 Invalid, 0 Unknown, 0 Unchecked, 40.6s Time] [2024-11-09 06:53:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2024-11-09 06:53:16,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1185. [2024-11-09 06:53:16,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 762 states have (on average 1.643044619422572) internal successors, (1252), 1175 states have internal predecessors, (1252), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 06:53:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1265 transitions. [2024-11-09 06:53:16,423 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1265 transitions. Word has length 97 [2024-11-09 06:53:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:53:16,424 INFO L471 AbstractCegarLoop]: Abstraction has 1185 states and 1265 transitions. [2024-11-09 06:53:16,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 57 states have internal predecessors, (187), 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) [2024-11-09 06:53:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1265 transitions. [2024-11-09 06:53:16,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-09 06:53:16,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:53:16,426 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:53:16,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2024-11-09 06:53:16,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2024-11-09 06:53:16,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-09 06:53:17,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:53:17,027 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:53:17,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:53:17,028 INFO L85 PathProgramCache]: Analyzing trace with hash -156854412, now seen corresponding path program 1 times [2024-11-09 06:53:17,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:53:17,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132493141] [2024-11-09 06:53:17,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:53:17,029 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 [2024-11-09 06:53:17,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:53:17,030 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:53:17,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2024-11-09 06:53:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:53:18,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-09 06:53:18,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:53:18,234 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 [2024-11-09 06:53:18,443 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-09 06:53:18,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-09 06:53:18,490 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 [2024-11-09 06:53:18,642 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 24 treesize of output 12 [2024-11-09 06:53:20,214 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:53:20,214 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 [2024-11-09 06:53:20,372 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:53:20,373 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 [2024-11-09 06:53:20,423 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 [2024-11-09 06:53:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 06:53:20,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:53:20,543 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3553 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3553) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (_ bv0 1))) is different from false [2024-11-09 06:53:20,558 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3553 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3553) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-09 06:53:21,094 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3599 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3553 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3599))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3553)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 06:53:21,096 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:53:21,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132493141] [2024-11-09 06:53:21,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132493141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:53:21,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [966210936] [2024-11-09 06:53:21,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:53:21,097 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:53:21,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:53:21,098 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:53:21,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-09 06:53:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:53:24,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-09 06:53:24,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:53:24,370 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 [2024-11-09 06:53:24,631 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-09 06:53:24,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-09 06:53:24,692 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 [2024-11-09 06:53:24,794 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 24 treesize of output 12 [2024-11-09 06:53:26,212 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:53:26,213 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 [2024-11-09 06:53:26,357 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:53:26,357 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 [2024-11-09 06:53:26,403 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 [2024-11-09 06:53:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 06:53:26,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:53:26,447 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4023 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4023) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-09 06:53:26,462 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4023 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4023) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2024-11-09 06:53:27,027 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4069 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4023 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4069))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4023)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-09 06:53:27,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [966210936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:53:27,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793030693] [2024-11-09 06:53:27,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:53:27,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:53:27,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:53:27,034 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:53:27,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-09 06:53:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:53:27,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-09 06:53:27,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:53:28,014 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:53:28,015 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 [2024-11-09 06:53:28,065 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 [2024-11-09 06:53:29,023 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:53:29,024 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 [2024-11-09 06:53:29,239 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:53:29,240 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 [2024-11-09 06:53:29,269 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 [2024-11-09 06:53:29,275 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 06:53:29,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:53:29,303 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4491 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4491) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2024-11-09 06:53:29,318 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4491 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4491) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-09 06:53:29,944 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-09 06:53:29,945 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 37 treesize of output 36 [2024-11-09 06:53:29,956 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4491 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4537 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4537))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4491)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2024-11-09 06:53:29,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793030693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:53:29,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:53:29,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 18 [2024-11-09 06:53:29,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644437378] [2024-11-09 06:53:29,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:53:29,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 06:53:29,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:53:29,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 06:53:29,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=323, Unknown=9, NotChecked=396, Total=812 [2024-11-09 06:53:29,962 INFO L87 Difference]: Start difference. First operand 1185 states and 1265 transitions. Second operand has 19 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:53:44,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:53:44,719 INFO L93 Difference]: Finished difference Result 1555 states and 1660 transitions. [2024-11-09 06:53:44,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 06:53:44,720 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 122 [2024-11-09 06:53:44,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:53:44,723 INFO L225 Difference]: With dead ends: 1555 [2024-11-09 06:53:44,723 INFO L226 Difference]: Without dead ends: 1555 [2024-11-09 06:53:44,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 354 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=105, Invalid=428, Unknown=9, NotChecked=450, Total=992 [2024-11-09 06:53:44,724 INFO L432 NwaCegarLoop]: 661 mSDtfsCounter, 703 mSDsluCounter, 5862 mSDsCounter, 0 mSdLazyCounter, 5447 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 6523 SdHoareTripleChecker+Invalid, 5459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 5447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:53:44,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 6523 Invalid, 5459 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 5447 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2024-11-09 06:53:44,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2024-11-09 06:53:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1184. [2024-11-09 06:53:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 762 states have (on average 1.641732283464567) internal successors, (1251), 1174 states have internal predecessors, (1251), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 06:53:44,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1264 transitions. [2024-11-09 06:53:44,746 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1264 transitions. Word has length 122 [2024-11-09 06:53:44,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:53:44,747 INFO L471 AbstractCegarLoop]: Abstraction has 1184 states and 1264 transitions. [2024-11-09 06:53:44,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:53:44,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1264 transitions. [2024-11-09 06:53:44,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-09 06:53:44,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:53:44,749 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:53:44,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-09 06:53:44,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2024-11-09 06:53:45,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2024-11-09 06:53:45,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:53:45,350 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:53:45,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:53:45,351 INFO L85 PathProgramCache]: Analyzing trace with hash -156854411, now seen corresponding path program 1 times [2024-11-09 06:53:45,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:53:45,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339781650] [2024-11-09 06:53:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:53:45,352 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 [2024-11-09 06:53:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:53:45,353 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:53:45,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2024-11-09 06:53:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:53:46,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-09 06:53:46,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:53:46,571 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 [2024-11-09 06:53:46,758 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 [2024-11-09 06:53:46,776 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:53:46,776 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 [2024-11-09 06:53:46,812 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 [2024-11-09 06:53:46,820 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 [2024-11-09 06:53:46,964 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 22 treesize of output 10 [2024-11-09 06:53:46,975 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 9 treesize of output 3 [2024-11-09 06:53:48,152 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:53:48,153 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 62 treesize of output 57 [2024-11-09 06:53:48,163 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 30 treesize of output 13 [2024-11-09 06:53:48,378 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:53:48,378 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 62 treesize of output 57 [2024-11-09 06:53:48,389 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 30 treesize of output 13 [2024-11-09 06:53:48,451 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 31 treesize of output 13 [2024-11-09 06:53:48,461 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 9 treesize of output 3 [2024-11-09 06:53:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 06:53:48,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:53:49,040 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5008 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5008) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_5007 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5008 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5008) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_5007) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-09 06:53:50,815 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5007 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5008 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5099 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5100 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5099))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5100) .cse0 v_ArrVal_5008) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5007) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5008 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5099 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5100 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5100) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5099) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5008) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2024-11-09 06:53:50,825 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:53:50,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339781650] [2024-11-09 06:53:50,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339781650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:53:50,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1369385381] [2024-11-09 06:53:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:53:50,826 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:53:50,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:53:50,827 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:53:50,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2024-11-09 06:53:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:53:55,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-09 06:53:55,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:53:55,960 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 [2024-11-09 06:53:55,967 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 [2024-11-09 06:53:56,681 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:53:56,681 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 [2024-11-09 06:53:56,691 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 12 treesize of output 14 [2024-11-09 06:53:56,775 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 15 treesize of output 1 [2024-11-09 06:53:56,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:53:56,938 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 17 treesize of output 9 [2024-11-09 06:53:57,052 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 7 treesize of output 3 [2024-11-09 06:53:58,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:53:58,137 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 16 treesize of output 11 [2024-11-09 06:53:58,458 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2024-11-09 06:53:58,472 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 27 treesize of output 22 [2024-11-09 06:53:58,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:58,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2024-11-09 06:53:58,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:53:58,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 06:53:58,875 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 06:53:58,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:53:59,305 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 239 treesize of output 167 [2024-11-09 06:54:34,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1369385381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:54:34,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515784709] [2024-11-09 06:54:34,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:54:34,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:54:34,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:54:34,711 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:54:34,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-09 06:54:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:54:35,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-09 06:54:35,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:54:36,736 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 [2024-11-09 06:54:36,853 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:54:36,853 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 [2024-11-09 06:54:36,903 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 [2024-11-09 06:54:36,950 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 [2024-11-09 06:54:37,314 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 22 treesize of output 10 [2024-11-09 06:54:37,338 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 9 treesize of output 3 [2024-11-09 06:54:41,896 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:54:41,897 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 62 treesize of output 57 [2024-11-09 06:54:41,922 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 30 treesize of output 13 [2024-11-09 06:54:42,359 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:54:42,360 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 62 treesize of output 57 [2024-11-09 06:54:42,384 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 30 treesize of output 13 [2024-11-09 06:54:42,556 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 31 treesize of output 13 [2024-11-09 06:54:42,588 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 9 treesize of output 3 [2024-11-09 06:54:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 06:54:42,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:54:42,900 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6043 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6044 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6043) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_6043 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6043) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-09 06:54:42,998 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6043 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_6043) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_6043 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6044 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_6043) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_6044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-09 06:54:46,908 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6043 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6136 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6135 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6135) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6136) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6043) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_6043 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6136 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6044 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6135 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6136))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6135) .cse2 v_ArrVal_6043) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_6044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-09 06:54:46,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515784709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:54:46,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:54:46,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 19 [2024-11-09 06:54:46,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115312382] [2024-11-09 06:54:46,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:54:46,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 06:54:46,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:54:46,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 06:54:46,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=559, Unknown=22, NotChecked=260, Total=930 [2024-11-09 06:54:46,930 INFO L87 Difference]: Start difference. First operand 1184 states and 1264 transitions. Second operand has 20 states, 17 states have (on average 9.117647058823529) internal successors, (155), 20 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:56:26,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:56:26,997 INFO L93 Difference]: Finished difference Result 1927 states and 2058 transitions. [2024-11-09 06:56:26,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:56:26,999 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 9.117647058823529) internal successors, (155), 20 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 122 [2024-11-09 06:56:26,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:56:27,002 INFO L225 Difference]: With dead ends: 1927 [2024-11-09 06:56:27,002 INFO L226 Difference]: Without dead ends: 1927 [2024-11-09 06:56:27,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 351 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 37.7s TimeCoverageRelationStatistics Valid=172, Invalid=948, Unknown=22, NotChecked=340, Total=1482 [2024-11-09 06:56:27,004 INFO L432 NwaCegarLoop]: 532 mSDtfsCounter, 1055 mSDsluCounter, 5329 mSDsCounter, 0 mSdLazyCounter, 9156 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 5861 SdHoareTripleChecker+Invalid, 9169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 9156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:56:27,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 5861 Invalid, 9169 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 9156 Invalid, 0 Unknown, 0 Unchecked, 96.3s Time] [2024-11-09 06:56:27,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2024-11-09 06:56:27,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1183. [2024-11-09 06:56:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 762 states have (on average 1.6404199475065617) internal successors, (1250), 1173 states have internal predecessors, (1250), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 06:56:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1263 transitions. [2024-11-09 06:56:27,022 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1263 transitions. Word has length 122 [2024-11-09 06:56:27,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:56:27,023 INFO L471 AbstractCegarLoop]: Abstraction has 1183 states and 1263 transitions. [2024-11-09 06:56:27,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 9.117647058823529) internal successors, (155), 20 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:56:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1263 transitions. [2024-11-09 06:56:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 06:56:27,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:56:27,024 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:56:27,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-09 06:56:27,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (42)] Ended with exit code 0 [2024-11-09 06:56:27,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2024-11-09 06:56:27,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:56:27,625 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:56:27,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:56:27,626 INFO L85 PathProgramCache]: Analyzing trace with hash 74930077, now seen corresponding path program 1 times [2024-11-09 06:56:27,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:56:27,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815692501] [2024-11-09 06:56:27,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:56:27,627 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 [2024-11-09 06:56:27,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:56:27,628 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:56:27,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2024-11-09 06:56:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:56:28,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-09 06:56:28,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:56:28,684 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 [2024-11-09 06:56:29,802 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-09 06:56:29,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-09 06:56:29,952 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 [2024-11-09 06:56:30,479 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 24 treesize of output 12 [2024-11-09 06:56:35,253 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:56:35,253 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 [2024-11-09 06:56:35,758 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:56:35,759 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 [2024-11-09 06:56:36,230 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:56:36,230 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 [2024-11-09 06:56:36,356 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 [2024-11-09 06:56:36,566 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 06:56:36,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:56:36,897 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6576 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6576) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-09 06:56:36,939 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6576 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6576) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-09 06:56:37,003 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6576 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6575 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6575))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6576)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 06:56:37,049 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6576 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6575 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6575))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6576)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 06:56:38,292 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6576 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6622 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6575 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6622))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6575)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6576)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 06:56:38,302 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:56:38,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815692501] [2024-11-09 06:56:38,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815692501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:56:38,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1142083381] [2024-11-09 06:56:38,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:56:38,303 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:56:38,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:56:38,304 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:56:38,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2024-11-09 06:56:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:56:59,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-09 06:56:59,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:56:59,201 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 [2024-11-09 06:57:00,360 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-09 06:57:00,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-09 06:57:00,434 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 [2024-11-09 06:57:00,753 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 24 treesize of output 12 [2024-11-09 06:57:05,332 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:57:05,333 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 [2024-11-09 06:57:05,671 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:57:05,671 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 [2024-11-09 06:57:05,953 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:57:05,953 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 [2024-11-09 06:57:06,079 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 [2024-11-09 06:57:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 06:57:06,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:57:06,214 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7062 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7062) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-09 06:57:06,255 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7062 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7062) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-09 06:57:06,316 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7061 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7062 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7061))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7062)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 06:57:06,359 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7061 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7062 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7061))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7062)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 06:57:07,604 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7061 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7062 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7108))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7061)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7062)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-09 06:57:07,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1142083381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:57:07,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841098035] [2024-11-09 06:57:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:57:07,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:57:07,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:57:07,616 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:57:07,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-09 06:57:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:57:08,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-09 06:57:08,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:57:08,443 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 [2024-11-09 06:57:09,428 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:57:09,429 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 [2024-11-09 06:57:09,605 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 [2024-11-09 06:57:13,023 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:57:13,024 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 [2024-11-09 06:57:13,729 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:57:13,730 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 [2024-11-09 06:57:14,206 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:57:14,207 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 [2024-11-09 06:57:14,298 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 [2024-11-09 06:57:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 06:57:14,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:57:14,785 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7547 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7547) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-09 06:57:14,844 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7546 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7547 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7546))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7547)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2024-11-09 06:57:14,894 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7546 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7547 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7546))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7547)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 06:57:16,275 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2024-11-09 06:57:16,276 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 61 treesize of output 60 [2024-11-09 06:57:16,311 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7546 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7547 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7593))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7546)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7547)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-09 06:57:16,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841098035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:57:16,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:57:16,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 12] total 20 [2024-11-09 06:57:16,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333576980] [2024-11-09 06:57:16,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:57:16,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 06:57:16,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:57:16,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 06:57:16,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=425, Unknown=26, NotChecked=770, Total=1332 [2024-11-09 06:57:16,323 INFO L87 Difference]: Start difference. First operand 1183 states and 1263 transitions. Second operand has 21 states, 18 states have (on average 5.666666666666667) internal successors, (102), 20 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:57:49,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:57:49,583 INFO L93 Difference]: Finished difference Result 1553 states and 1658 transitions. [2024-11-09 06:57:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 06:57:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.666666666666667) internal successors, (102), 20 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 125 [2024-11-09 06:57:49,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:57:49,586 INFO L225 Difference]: With dead ends: 1553 [2024-11-09 06:57:49,586 INFO L226 Difference]: Without dead ends: 1553 [2024-11-09 06:57:49,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 364 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=132, Invalid=548, Unknown=26, NotChecked=854, Total=1560 [2024-11-09 06:57:49,587 INFO L432 NwaCegarLoop]: 661 mSDtfsCounter, 698 mSDsluCounter, 3730 mSDsCounter, 0 mSdLazyCounter, 3488 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 3501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:57:49,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 4391 Invalid, 3501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3488 Invalid, 0 Unknown, 0 Unchecked, 32.5s Time] [2024-11-09 06:57:49,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2024-11-09 06:57:49,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1182. [2024-11-09 06:57:49,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 762 states have (on average 1.6391076115485563) internal successors, (1249), 1172 states have internal predecessors, (1249), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 06:57:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1262 transitions. [2024-11-09 06:57:49,604 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1262 transitions. Word has length 125 [2024-11-09 06:57:49,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:57:49,604 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1262 transitions. [2024-11-09 06:57:49,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.666666666666667) internal successors, (102), 20 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:57:49,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1262 transitions. [2024-11-09 06:57:49,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 06:57:49,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:57:49,605 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:57:49,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-09 06:57:49,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (45)] Ended with exit code 0 [2024-11-09 06:57:50,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2024-11-09 06:57:50,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:57:50,206 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 06:57:50,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:57:50,207 INFO L85 PathProgramCache]: Analyzing trace with hash 74930078, now seen corresponding path program 1 times [2024-11-09 06:57:50,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:57:50,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541486086] [2024-11-09 06:57:50,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:57:50,207 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 [2024-11-09 06:57:50,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:57:50,209 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 06:57:50,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2024-11-09 06:57:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:57:51,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-09 06:57:51,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:57:51,321 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 [2024-11-09 06:57:52,389 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:57:52,389 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 [2024-11-09 06:57:52,425 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 [2024-11-09 06:57:52,576 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 [2024-11-09 06:57:52,602 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 [2024-11-09 06:57:53,235 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 22 treesize of output 10 [2024-11-09 06:57:53,254 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 9 treesize of output 3 [2024-11-09 06:57:57,035 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:57:57,035 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 62 treesize of output 57 [2024-11-09 06:57:57,089 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 30 treesize of output 13 [2024-11-09 06:57:57,597 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:57:57,597 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 62 treesize of output 57 [2024-11-09 06:57:57,617 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 30 treesize of output 13 [2024-11-09 06:57:58,102 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:57:58,103 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 62 treesize of output 57 [2024-11-09 06:57:58,122 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 30 treesize of output 13 [2024-11-09 06:57:58,248 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 31 treesize of output 13 [2024-11-09 06:57:58,267 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 9 treesize of output 3 [2024-11-09 06:57:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 06:57:58,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:57:58,989 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8080 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_8081 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8080 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8081) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 06:57:59,061 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8080 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_8081 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8080 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_8081) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-09 06:57:59,178 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8081 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8080 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8078))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8079) .cse0 v_ArrVal_8080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_8081) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_8078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8080 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8079) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8078) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32))))))) is different from false [2024-11-09 06:57:59,259 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8081 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8080 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8078))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8079) .cse1 v_ArrVal_8080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8081) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8080 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8079) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8078) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-09 06:58:02,762 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8173 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8172 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8080 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8173))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8172) .cse1 v_ArrVal_8079) (select (select (store .cse2 .cse1 v_ArrVal_8078) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8080))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_8078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8173 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8172 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8081 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8080 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8173))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_8078))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8172) .cse4 v_ArrVal_8079) .cse5 v_ArrVal_8080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_8081) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-09 06:58:02,779 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:58:02,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541486086] [2024-11-09 06:58:02,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541486086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:58:02,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1524094430] [2024-11-09 06:58:02,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:58:02,779 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:58:02,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:58:02,780 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:58:02,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2024-11-09 07:00:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:00:08,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-09 07:00:08,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:00:08,043 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 [2024-11-09 07:00:09,077 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 07:00:09,077 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 [2024-11-09 07:00:09,112 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 [2024-11-09 07:00:09,149 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 [2024-11-09 07:00:09,173 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 [2024-11-09 07:00:09,481 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 22 treesize of output 10 [2024-11-09 07:00:09,499 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 9 treesize of output 3 [2024-11-09 07:00:13,187 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:00:13,188 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 62 treesize of output 57 [2024-11-09 07:00:13,214 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 30 treesize of output 13 [2024-11-09 07:00:13,577 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:00:13,577 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 62 treesize of output 57 [2024-11-09 07:00:13,597 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 30 treesize of output 13 [2024-11-09 07:00:13,903 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:00:13,903 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 62 treesize of output 57 [2024-11-09 07:00:13,922 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 30 treesize of output 13 [2024-11-09 07:00:14,053 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 31 treesize of output 13 [2024-11-09 07:00:14,073 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 9 treesize of output 3 [2024-11-09 07:00:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 07:00:14,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:00:14,297 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8660) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8661) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8660) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd (_ bv12 32) .cse1)))))) is different from false [2024-11-09 07:00:14,373 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8660) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8661) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8660) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2024-11-09 07:00:14,533 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8658 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8659) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8658) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8660) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8658 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8658))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8659) .cse2 v_ArrVal_8660) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8661) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-09 07:00:14,666 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8658 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8659) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_8658) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8660) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8658 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_8658))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8659) .cse3 v_ArrVal_8660) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_8661) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-09 07:00:17,665 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8658 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8753 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8753))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8658))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8752) .cse0 v_ArrVal_8659) .cse1 v_ArrVal_8660) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8661) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8658 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8753 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8753))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8752) .cse6 v_ArrVal_8659) (select (select (store .cse7 .cse6 v_ArrVal_8658) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8660))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2024-11-09 07:00:17,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1524094430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:00:17,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965040807] [2024-11-09 07:00:17,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:00:17,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:00:17,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:00:17,686 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:00:17,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-09 07:00:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:00:18,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-09 07:00:18,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:00:19,501 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 07:00:19,502 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 [2024-11-09 07:00:19,536 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 [2024-11-09 07:00:19,574 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 [2024-11-09 07:00:19,593 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 [2024-11-09 07:00:19,896 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 22 treesize of output 10 [2024-11-09 07:00:19,914 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 9 treesize of output 3 [2024-11-09 07:00:23,349 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:00:23,350 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 62 treesize of output 57 [2024-11-09 07:00:23,367 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 30 treesize of output 13 [2024-11-09 07:00:23,706 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:00:23,706 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 62 treesize of output 57 [2024-11-09 07:00:23,724 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 30 treesize of output 13 [2024-11-09 07:00:23,992 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:00:23,992 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 62 treesize of output 57 [2024-11-09 07:00:24,010 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 30 treesize of output 13 [2024-11-09 07:00:24,128 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 31 treesize of output 13 [2024-11-09 07:00:24,146 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 9 treesize of output 3 [2024-11-09 07:00:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 07:00:24,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:00:24,368 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9240 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9239 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9239) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9240) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_9239 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9239) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv8 32)) (bvadd .cse1 (_ bv12 32))))))) is different from false [2024-11-09 07:00:24,437 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_9239 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_9239) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_9240 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9239 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_9239) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_9240) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-09 07:00:24,590 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9239 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9238 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9237 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9237) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9238) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9239) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_9240 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9239 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9238 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9237 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9238))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9237) .cse2 v_ArrVal_9239) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_9240) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-09 07:00:24,678 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_9240 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9239 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9238 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9237 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_9238))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_9237) .cse1 v_ArrVal_9239) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_9240) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_9239 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9238 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9237 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_9237) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_9238) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9239) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-09 07:00:28,171 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9332 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9331 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9240 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9239 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9238 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9237 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9331))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_9238))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9332) .cse0 v_ArrVal_9237) .cse1 v_ArrVal_9239) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_9240) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_9332 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9331 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9239 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9238 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9237 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9331))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9332) .cse6 v_ArrVal_9237) (select (select (store .cse7 .cse6 v_ArrVal_9238) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9239))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv8 32)) (bvadd .cse5 (_ bv12 32))))))) is different from false [2024-11-09 07:00:28,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965040807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:00:28,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:00:28,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2024-11-09 07:00:28,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384729358] [2024-11-09 07:00:28,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:00:28,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 07:00:28,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:00:28,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 07:00:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=139, Unknown=15, NotChecked=540, Total=756 [2024-11-09 07:00:28,197 INFO L87 Difference]: Start difference. First operand 1182 states and 1262 transitions. Second operand has 11 states, 9 states have (on average 9.444444444444445) internal successors, (85), 11 states have internal predecessors, (85), 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) [2024-11-09 07:01:00,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:01:00,405 INFO L93 Difference]: Finished difference Result 1550 states and 1655 transitions. [2024-11-09 07:01:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:01:00,406 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.444444444444445) internal successors, (85), 11 states have internal predecessors, (85), 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 125 [2024-11-09 07:01:00,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:01:00,410 INFO L225 Difference]: With dead ends: 1550 [2024-11-09 07:01:00,410 INFO L226 Difference]: Without dead ends: 1550 [2024-11-09 07:01:00,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 371 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=100, Invalid=287, Unknown=15, NotChecked=720, Total=1122 [2024-11-09 07:01:00,411 INFO L432 NwaCegarLoop]: 668 mSDtfsCounter, 698 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 3209 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:01:00,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 2575 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3209 Invalid, 0 Unknown, 0 Unchecked, 31.1s Time] [2024-11-09 07:01:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2024-11-09 07:01:00,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1181. [2024-11-09 07:01:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 762 states have (on average 1.6377952755905512) internal successors, (1248), 1171 states have internal predecessors, (1248), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 07:01:00,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1261 transitions. [2024-11-09 07:01:00,428 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1261 transitions. Word has length 125 [2024-11-09 07:01:00,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:01:00,429 INFO L471 AbstractCegarLoop]: Abstraction has 1181 states and 1261 transitions. [2024-11-09 07:01:00,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.444444444444445) internal successors, (85), 11 states have internal predecessors, (85), 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) [2024-11-09 07:01:00,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1261 transitions. [2024-11-09 07:01:00,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-09 07:01:00,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:01:00,431 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:01:00,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-09 07:01:00,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2024-11-09 07:01:00,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2024-11-09 07:01:01,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 07:01:01,032 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 07:01:01,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:01:01,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1140763141, now seen corresponding path program 1 times [2024-11-09 07:01:01,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:01:01,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814415662] [2024-11-09 07:01:01,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:01:01,033 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 [2024-11-09 07:01:01,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:01:01,034 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:01:01,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2024-11-09 07:01:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:01:02,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-09 07:01:02,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:01:02,264 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 [2024-11-09 07:01:03,441 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-09 07:01:03,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-09 07:01:03,582 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 [2024-11-09 07:01:04,094 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 24 treesize of output 12 [2024-11-09 07:01:08,672 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:01:08,672 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 [2024-11-09 07:01:09,220 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:01:09,220 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 [2024-11-09 07:01:09,705 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:01:09,705 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 [2024-11-09 07:01:10,231 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:01:10,231 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 [2024-11-09 07:01:10,343 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 [2024-11-09 07:01:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 07:01:10,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:01:11,218 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9788 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_9788) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-09 07:01:11,280 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9788 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9787 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9787))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9788)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 07:01:11,338 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9788 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9787 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9787))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9788)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 07:01:11,404 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9788 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9787 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9786 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9786))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9787)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9788)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 07:01:11,452 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9788 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9787 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9786 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9786))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9787)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9788)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 07:01:12,732 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9788 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9787 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9786 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9834))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9786)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9787)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9788)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 07:01:12,743 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:01:12,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814415662] [2024-11-09 07:01:12,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814415662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:01:12,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [97802134] [2024-11-09 07:01:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:01:12,744 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:01:12,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:01:12,745 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:01:12,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2024-11-09 07:01:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:01:56,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-09 07:01:56,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:01:56,354 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 [2024-11-09 07:01:57,474 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-09 07:01:57,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-09 07:01:57,548 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 [2024-11-09 07:01:57,865 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 24 treesize of output 12 [2024-11-09 07:02:02,069 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:02:02,069 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 [2024-11-09 07:02:02,407 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:02:02,407 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 [2024-11-09 07:02:02,705 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:02:02,705 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 [2024-11-09 07:02:03,009 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:02:03,009 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 [2024-11-09 07:02:03,140 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 [2024-11-09 07:02:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 07:02:03,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:02:03,280 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10290 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_10290) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-09 07:02:03,323 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10290 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_10290) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-09 07:02:03,386 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10289 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10290 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_10289))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10290)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 07:02:03,431 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10289 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10290 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10289))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10290)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 07:02:03,496 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10289 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10288 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10290 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_10288))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10289)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10290)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 07:02:03,543 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10289 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10288 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10290 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10288))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10289)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10290)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 07:02:04,912 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10289 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10288 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10290 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_10336))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10288)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10289)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10290)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 07:02:04,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [97802134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:02:04,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080669310] [2024-11-09 07:02:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:02:04,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:02:04,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:02:04,926 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:02:04,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-09 07:02:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:02:05,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-09 07:02:05,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:02:06,851 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 07:02:06,852 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 [2024-11-09 07:02:07,053 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 [2024-11-09 07:02:10,852 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:02:10,853 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 [2024-11-09 07:02:11,737 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:02:11,737 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 [2024-11-09 07:02:12,249 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:02:12,250 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 [2024-11-09 07:02:12,790 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 07:02:12,791 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 [2024-11-09 07:02:12,883 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 [2024-11-09 07:02:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 07:02:12,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:02:12,992 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10790 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_10790) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2024-11-09 07:02:13,035 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10790 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_10790) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-09 07:02:13,100 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10790 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10789 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_10789))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10790)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 07:02:13,144 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10790 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10789 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10789))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10790)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 07:02:13,211 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10790 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10788 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10789 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_10788))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10789)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10790)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 07:02:13,257 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10790 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10788 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10789 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10788))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10789)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10790)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 07:02:14,883 INFO L349 Elim1Store]: treesize reduction 7, result has 93.2 percent of original size [2024-11-09 07:02:14,884 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 109 treesize of output 108 [2024-11-09 07:02:14,929 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10790 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10788 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10789 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10836 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_10836))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10788)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10789)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10790)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-09 07:02:14,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080669310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:02:14,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:02:14,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 22 [2024-11-09 07:02:14,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009359937] [2024-11-09 07:02:14,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:02:14,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 07:02:14,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:02:14,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 07:02:14,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=512, Unknown=32, NotChecked=1300, Total=1980 [2024-11-09 07:02:14,943 INFO L87 Difference]: Start difference. First operand 1181 states and 1261 transitions. Second operand has 23 states, 20 states have (on average 5.6) internal successors, (112), 22 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:03:25,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:03:25,636 INFO L93 Difference]: Finished difference Result 1551 states and 1656 transitions. [2024-11-09 07:03:25,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 07:03:25,637 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 5.6) internal successors, (112), 22 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 128 [2024-11-09 07:03:25,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:03:25,640 INFO L225 Difference]: With dead ends: 1551 [2024-11-09 07:03:25,640 INFO L226 Difference]: Without dead ends: 1551 [2024-11-09 07:03:25,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 374 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 20 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=157, Invalid=646, Unknown=33, NotChecked=1420, Total=2256 [2024-11-09 07:03:25,641 INFO L432 NwaCegarLoop]: 659 mSDtfsCounter, 695 mSDsluCounter, 7331 mSDsCounter, 0 mSdLazyCounter, 7062 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 7990 SdHoareTripleChecker+Invalid, 7073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 7062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:03:25,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 7990 Invalid, 7073 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 7062 Invalid, 0 Unknown, 0 Unchecked, 69.8s Time] [2024-11-09 07:03:25,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2024-11-09 07:03:25,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1180. [2024-11-09 07:03:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 762 states have (on average 1.636482939632546) internal successors, (1247), 1170 states have internal predecessors, (1247), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 07:03:25,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1260 transitions. [2024-11-09 07:03:25,654 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1260 transitions. Word has length 128 [2024-11-09 07:03:25,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:03:25,654 INFO L471 AbstractCegarLoop]: Abstraction has 1180 states and 1260 transitions. [2024-11-09 07:03:25,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 5.6) internal successors, (112), 22 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 07:03:25,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1260 transitions. [2024-11-09 07:03:25,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-09 07:03:25,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:03:25,656 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:03:25,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (51)] Forceful destruction successful, exit code 0 [2024-11-09 07:03:25,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2024-11-09 07:03:26,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-09 07:03:26,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:03:26,257 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-09 07:03:26,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:03:26,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1140763140, now seen corresponding path program 1 times [2024-11-09 07:03:26,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:03:26,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997984911] [2024-11-09 07:03:26,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:03:26,258 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 [2024-11-09 07:03:26,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:03:26,259 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:03:26,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfa11aa0-93ea-47c4-9a22-35b61d920d55/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2024-11-09 07:03:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:03:27,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-09 07:03:27,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:03:27,666 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 [2024-11-09 07:03:28,693 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 [2024-11-09 07:03:28,797 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 07:03:28,797 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 [2024-11-09 07:03:28,925 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 [2024-11-09 07:03:28,945 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 [2024-11-09 07:03:29,541 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 22 treesize of output 10 [2024-11-09 07:03:29,560 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 9 treesize of output 3