./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --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 4f54335276b565c52e40eef6a3f78ed9d794347e65877e7f862e4de86bcdea73 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:50:10,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:50:10,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:50:10,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:50:10,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:50:10,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:50:10,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:50:10,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:50:10,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:50:10,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:50:10,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:50:10,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:50:10,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:50:10,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:50:10,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:50:10,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:50:10,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:50:10,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:50:10,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:50:10,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:50:10,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:50:10,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:50:10,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:50:10,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:50:10,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:50:10,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:50:10,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:50:10,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:50:10,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:50:10,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:50:10,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:50:10,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:50:10,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:50:10,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:50:10,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:50:10,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:50:10,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:50:10,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:50:10,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:50:10,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:50:10,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:50:10,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 10:50:10,775 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:50:10,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:50:10,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:50:10,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:50:10,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:50:10,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:50:10,777 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:50:10,778 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:50:10,778 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:50:10,778 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:50:10,778 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:50:10,778 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:50:10,779 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:50:10,779 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:50:10,779 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:50:10,779 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:50:10,779 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:50:10,779 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:50:10,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:50:10,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:50:10,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:50:10,781 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:50:10,781 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:50:10,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:50:10,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:50:10,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:50:10,781 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:50:10,781 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:50:10,781 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:50:10,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:50:10,782 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:50:10,782 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:50:10,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:50:10,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:50:10,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:50:10,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:50:10,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:50:10,783 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:50:10,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:50:10,783 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:50:10,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:50:10,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:50:10,783 INFO L138 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_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f54335276b565c52e40eef6a3f78ed9d794347e65877e7f862e4de86bcdea73 [2022-12-14 10:50:10,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:50:10,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:50:10,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:50:10,999 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:50:11,000 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:50:11,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i [2022-12-14 10:50:13,705 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:50:13,946 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:50:13,946 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i [2022-12-14 10:50:13,959 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/data/b6348123e/0458468c56b742d0b869ff5bba8a4021/FLAGc5b60d5c8 [2022-12-14 10:50:13,970 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/data/b6348123e/0458468c56b742d0b869ff5bba8a4021 [2022-12-14 10:50:13,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:50:13,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:50:13,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:50:13,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:50:13,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:50:13,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:50:13" (1/1) ... [2022-12-14 10:50:13,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc20e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:13, skipping insertion in model container [2022-12-14 10:50:13,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:50:13" (1/1) ... [2022-12-14 10:50:13,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:50:14,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:50:14,340 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[33021,33034] [2022-12-14 10:50:14,484 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:50:14,485 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[84583,84596] [2022-12-14 10:50:14,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:50:14,497 ERROR L326 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) [2022-12-14 10:50:14,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23332d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:14, skipping insertion in model container [2022-12-14 10:50:14,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:50:14,497 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 10:50:14,499 INFO L158 Benchmark]: Toolchain (without parser) took 524.99ms. Allocated memory is still 142.6MB. Free memory was 91.4MB in the beginning and 58.9MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-14 10:50:14,499 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:50:14,500 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.84ms. Allocated memory is still 142.6MB. Free memory was 91.4MB in the beginning and 58.9MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-14 10:50:14,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.84ms. Allocated memory is still 142.6MB. Free memory was 91.4MB in the beginning and 58.9MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --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 4f54335276b565c52e40eef6a3f78ed9d794347e65877e7f862e4de86bcdea73 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:50:15,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:50:15,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:50:15,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:50:15,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:50:15,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:50:15,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:50:15,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:50:15,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:50:15,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:50:15,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:50:15,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:50:15,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:50:15,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:50:15,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:50:15,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:50:15,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:50:15,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:50:15,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:50:15,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:50:15,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:50:15,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:50:15,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:50:15,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:50:15,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:50:15,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:50:15,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:50:15,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:50:15,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:50:15,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:50:15,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:50:15,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:50:15,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:50:15,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:50:15,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:50:15,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:50:15,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:50:15,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:50:15,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:50:15,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:50:15,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:50:15,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 10:50:15,957 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:50:15,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:50:15,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:50:15,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:50:15,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:50:15,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:50:15,959 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:50:15,959 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:50:15,959 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:50:15,959 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:50:15,959 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:50:15,959 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:50:15,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:50:15,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:50:15,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:50:15,960 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:50:15,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:50:15,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:50:15,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:50:15,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:50:15,960 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:50:15,961 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:50:15,961 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:50:15,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:50:15,961 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:50:15,961 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 10:50:15,961 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 10:50:15,961 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:50:15,961 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:50:15,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:50:15,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 10:50:15,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:50:15,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:50:15,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:50:15,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:50:15,962 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 10:50:15,962 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 10:50:15,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:50:15,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 10:50:15,962 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f54335276b565c52e40eef6a3f78ed9d794347e65877e7f862e4de86bcdea73 [2022-12-14 10:50:16,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:50:16,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:50:16,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:50:16,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:50:16,185 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:50:16,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i [2022-12-14 10:50:18,755 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:50:19,050 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:50:19,050 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i [2022-12-14 10:50:19,067 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/data/db91783e2/92e487d0cf1745ddaa7618f603e642a5/FLAG52a181ebf [2022-12-14 10:50:19,081 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/data/db91783e2/92e487d0cf1745ddaa7618f603e642a5 [2022-12-14 10:50:19,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:50:19,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:50:19,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:50:19,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:50:19,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:50:19,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:50:19" (1/1) ... [2022-12-14 10:50:19,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de8f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:19, skipping insertion in model container [2022-12-14 10:50:19,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:50:19" (1/1) ... [2022-12-14 10:50:19,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:50:19,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:50:19,488 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[33021,33034] [2022-12-14 10:50:19,642 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:50:19,643 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[84583,84596] [2022-12-14 10:50:19,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:50:19,655 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 10:50:19,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:50:19,683 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[33021,33034] [2022-12-14 10:50:19,751 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:50:19,752 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[84583,84596] [2022-12-14 10:50:19,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:50:19,756 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:50:19,773 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[33021,33034] [2022-12-14 10:50:19,814 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 10:50:19,815 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-1.i[84583,84596] [2022-12-14 10:50:19,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:50:19,836 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:50:19,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:19 WrapperNode [2022-12-14 10:50:19,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:50:19,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:50:19,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:50:19,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:50:19,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:19" (1/1) ... [2022-12-14 10:50:19,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:19" (1/1) ... [2022-12-14 10:50:19,960 INFO L138 Inliner]: procedures = 180, calls = 730, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2866 [2022-12-14 10:50:19,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:50:19,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:50:19,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:50:19,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:50:19,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:19" (1/1) ... [2022-12-14 10:50:19,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:19" (1/1) ... [2022-12-14 10:50:19,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:19" (1/1) ... [2022-12-14 10:50:19,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:19" (1/1) ... [2022-12-14 10:50:20,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:19" (1/1) ... [2022-12-14 10:50:20,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:19" (1/1) ... [2022-12-14 10:50:20,074 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:19" (1/1) ... [2022-12-14 10:50:20,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:19" (1/1) ... [2022-12-14 10:50:20,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:50:20,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:50:20,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:50:20,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:50:20,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:19" (1/1) ... [2022-12-14 10:50:20,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:50:20,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:50:20,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:50:20,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:50:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 10:50:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 10:50:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 10:50:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 10:50:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 10:50:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 10:50:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:50:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:50:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:50:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:50:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 10:50:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:50:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:50:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 10:50:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 10:50:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:50:20,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:50:20,299 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:50:20,300 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:50:20,303 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-14 10:50:24,291 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:50:24,304 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:50:24,304 INFO L300 CfgBuilder]: Removed 54 assume(true) statements. [2022-12-14 10:50:24,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:50:24 BoogieIcfgContainer [2022-12-14 10:50:24,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:50:24,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:50:24,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:50:24,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:50:24,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:50:19" (1/3) ... [2022-12-14 10:50:24,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5681c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:50:24, skipping insertion in model container [2022-12-14 10:50:24,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:50:19" (2/3) ... [2022-12-14 10:50:24,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5681c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:50:24, skipping insertion in model container [2022-12-14 10:50:24,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:50:24" (3/3) ... [2022-12-14 10:50:24,313 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test9-1.i [2022-12-14 10:50:24,327 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:50:24,327 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2022-12-14 10:50:24,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:50:24,404 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@649463a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:50:24,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2022-12-14 10:50:24,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 1871 states, 937 states have (on average 2.1024546424759873) internal successors, (1970), 1865 states have internal predecessors, (1970), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 10:50:24,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 10:50:24,419 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:24,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 10:50:24,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:50:24,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:24,425 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-12-14 10:50:24,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:24,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290338281] [2022-12-14 10:50:24,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:24,437 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 [2022-12-14 10:50:24,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:24,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:50:24,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:24,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:50:24,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:24,576 INFO L350 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 [2022-12-14 10:50:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:24,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:24,589 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:24,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290338281] [2022-12-14 10:50:24,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290338281] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:24,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:24,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:50:24,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115487107] [2022-12-14 10:50:24,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:24,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:50:24,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:24,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:50:24,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:24,632 INFO L87 Difference]: Start difference. First operand has 1871 states, 937 states have (on average 2.1024546424759873) internal successors, (1970), 1865 states have internal predecessors, (1970), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:26,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:26,436 INFO L93 Difference]: Finished difference Result 1858 states and 2903 transitions. [2022-12-14 10:50:26,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:50:26,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 10:50:26,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:26,467 INFO L225 Difference]: With dead ends: 1858 [2022-12-14 10:50:26,467 INFO L226 Difference]: Without dead ends: 1856 [2022-12-14 10:50:26,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:26,471 INFO L413 NwaCegarLoop]: 2513 mSDtfsCounter, 1792 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2295 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:26,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2295 Valid, 2560 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 10:50:26,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2022-12-14 10:50:26,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1855. [2022-12-14 10:50:26,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 937 states have (on average 2.022411953041622) internal successors, (1895), 1849 states have internal predecessors, (1895), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 10:50:26,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2901 transitions. [2022-12-14 10:50:26,712 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2901 transitions. Word has length 3 [2022-12-14 10:50:26,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:26,713 INFO L495 AbstractCegarLoop]: Abstraction has 1855 states and 2901 transitions. [2022-12-14 10:50:26,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:26,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2901 transitions. [2022-12-14 10:50:26,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 10:50:26,713 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:26,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 10:50:26,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:50:26,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:26,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:50:26,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:26,918 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-12-14 10:50:26,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:26,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678937499] [2022-12-14 10:50:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:26,921 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 [2022-12-14 10:50:26,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:26,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:50:26,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:27,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:50:27,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:27,125 INFO L350 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 [2022-12-14 10:50:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:27,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:27,136 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:27,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678937499] [2022-12-14 10:50:27,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678937499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:27,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:27,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:50:27,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596619444] [2022-12-14 10:50:27,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:27,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:50:27,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:27,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:50:27,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:27,139 INFO L87 Difference]: Start difference. First operand 1855 states and 2901 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:29,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:29,720 INFO L93 Difference]: Finished difference Result 3064 states and 5131 transitions. [2022-12-14 10:50:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:50:29,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 10:50:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:29,734 INFO L225 Difference]: With dead ends: 3064 [2022-12-14 10:50:29,734 INFO L226 Difference]: Without dead ends: 3064 [2022-12-14 10:50:29,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:29,735 INFO L413 NwaCegarLoop]: 3301 mSDtfsCounter, 1230 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 5268 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:29,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 5268 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 10:50:29,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2022-12-14 10:50:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 2977. [2022-12-14 10:50:30,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 1560 states have (on average 2.001923076923077) internal successors, (3123), 2971 states have internal predecessors, (3123), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 10:50:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 5129 transitions. [2022-12-14 10:50:30,093 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 5129 transitions. Word has length 3 [2022-12-14 10:50:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:30,093 INFO L495 AbstractCegarLoop]: Abstraction has 2977 states and 5129 transitions. [2022-12-14 10:50:30,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:30,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 5129 transitions. [2022-12-14 10:50:30,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 10:50:30,094 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:30,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:50:30,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:30,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:30,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:50:30,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-12-14 10:50:30,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:30,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045325645] [2022-12-14 10:50:30,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:30,297 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 [2022-12-14 10:50:30,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:30,298 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:50:30,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:30,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:50:30,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:30,393 INFO L350 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 [2022-12-14 10:50:30,397 INFO L350 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 [2022-12-14 10:50:30,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:50:30,443 INFO L350 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 [2022-12-14 10:50:30,454 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:50:30,455 INFO L350 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 [2022-12-14 10:50:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:30,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:30,473 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:30,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045325645] [2022-12-14 10:50:30,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045325645] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:30,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:30,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:50:30,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453126013] [2022-12-14 10:50:30,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:30,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:50:30,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:30,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:50:30,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:50:30,476 INFO L87 Difference]: Start difference. First operand 2977 states and 5129 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:33,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:33,648 INFO L93 Difference]: Finished difference Result 2967 states and 5118 transitions. [2022-12-14 10:50:33,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:50:33,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 10:50:33,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:33,660 INFO L225 Difference]: With dead ends: 2967 [2022-12-14 10:50:33,660 INFO L226 Difference]: Without dead ends: 2967 [2022-12-14 10:50:33,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:50:33,661 INFO L413 NwaCegarLoop]: 2290 mSDtfsCounter, 3640 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4143 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:33,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4143 Valid, 2316 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-14 10:50:33,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2022-12-14 10:50:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1844. [2022-12-14 10:50:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 937 states have (on average 2.0096051227321237) internal successors, (1883), 1838 states have internal predecessors, (1883), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 10:50:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2889 transitions. [2022-12-14 10:50:33,855 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2889 transitions. Word has length 7 [2022-12-14 10:50:33,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:33,855 INFO L495 AbstractCegarLoop]: Abstraction has 1844 states and 2889 transitions. [2022-12-14 10:50:33,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:33,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2889 transitions. [2022-12-14 10:50:33,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:50:33,855 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:33,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:50:33,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:34,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:34,057 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:50:34,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:34,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-12-14 10:50:34,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:34,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018506774] [2022-12-14 10:50:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:34,061 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 [2022-12-14 10:50:34,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:34,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:50:34,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:34,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:50:34,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:34,207 INFO L350 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 [2022-12-14 10:50:34,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:34,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:34,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:34,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018506774] [2022-12-14 10:50:34,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018506774] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:34,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:34,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:50:34,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123344625] [2022-12-14 10:50:34,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:34,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:50:34,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:34,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:50:34,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:34,218 INFO L87 Difference]: Start difference. First operand 1844 states and 2889 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 10:50:36,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:36,113 INFO L93 Difference]: Finished difference Result 3010 states and 5076 transitions. [2022-12-14 10:50:36,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:50:36,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2022-12-14 10:50:36,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:36,123 INFO L225 Difference]: With dead ends: 3010 [2022-12-14 10:50:36,123 INFO L226 Difference]: Without dead ends: 3010 [2022-12-14 10:50:36,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:36,124 INFO L413 NwaCegarLoop]: 4653 mSDtfsCounter, 1802 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 6809 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:36,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 6809 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 10:50:36,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2022-12-14 10:50:36,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1797. [2022-12-14 10:50:36,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 937 states have (on average 1.959445037353255) internal successors, (1836), 1791 states have internal predecessors, (1836), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 10:50:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2842 transitions. [2022-12-14 10:50:36,325 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2842 transitions. Word has length 8 [2022-12-14 10:50:36,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:36,325 INFO L495 AbstractCegarLoop]: Abstraction has 1797 states and 2842 transitions. [2022-12-14 10:50:36,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 10:50:36,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2842 transitions. [2022-12-14 10:50:36,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:50:36,326 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:36,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:50:36,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:36,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:36,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:50:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:36,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-12-14 10:50:36,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:36,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114144458] [2022-12-14 10:50:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:36,527 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 [2022-12-14 10:50:36,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:36,528 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:50:36,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:36,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:50:36,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:36,612 INFO L350 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 [2022-12-14 10:50:36,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:36,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:36,629 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:36,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114144458] [2022-12-14 10:50:36,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114144458] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:36,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:36,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:50:36,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24458690] [2022-12-14 10:50:36,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:36,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:50:36,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:36,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:50:36,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:36,635 INFO L87 Difference]: Start difference. First operand 1797 states and 2842 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 10:50:39,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:39,187 INFO L93 Difference]: Finished difference Result 3077 states and 5145 transitions. [2022-12-14 10:50:39,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:50:39,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2022-12-14 10:50:39,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:39,195 INFO L225 Difference]: With dead ends: 3077 [2022-12-14 10:50:39,195 INFO L226 Difference]: Without dead ends: 3077 [2022-12-14 10:50:39,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:39,196 INFO L413 NwaCegarLoop]: 4847 mSDtfsCounter, 1491 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 7165 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:39,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1991 Valid, 7165 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 10:50:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2022-12-14 10:50:39,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1819. [2022-12-14 10:50:39,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 969 states have (on average 1.9525283797729618) internal successors, (1892), 1813 states have internal predecessors, (1892), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 10:50:39,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2898 transitions. [2022-12-14 10:50:39,377 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2898 transitions. Word has length 8 [2022-12-14 10:50:39,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:39,378 INFO L495 AbstractCegarLoop]: Abstraction has 1819 states and 2898 transitions. [2022-12-14 10:50:39,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-12-14 10:50:39,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2898 transitions. [2022-12-14 10:50:39,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 10:50:39,378 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:39,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:50:39,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 10:50:39,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:39,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:50:39,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:39,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2100681113, now seen corresponding path program 1 times [2022-12-14 10:50:39,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:39,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697128025] [2022-12-14 10:50:39,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:39,580 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 [2022-12-14 10:50:39,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:39,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:50:39,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:39,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:50:39,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:39,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:50:39,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:50:39,699 INFO L350 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 29 treesize of output 38 [2022-12-14 10:50:39,734 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:50:39,735 INFO L350 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 62 treesize of output 22 [2022-12-14 10:50:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:39,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:39,755 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:39,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697128025] [2022-12-14 10:50:39,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697128025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:39,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:39,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:50:39,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414535446] [2022-12-14 10:50:39,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:39,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:50:39,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:39,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:50:39,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:50:39,757 INFO L87 Difference]: Start difference. First operand 1819 states and 2898 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:42,644 INFO L93 Difference]: Finished difference Result 3030 states and 5129 transitions. [2022-12-14 10:50:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:50:42,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 10:50:42,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:42,655 INFO L225 Difference]: With dead ends: 3030 [2022-12-14 10:50:42,655 INFO L226 Difference]: Without dead ends: 3030 [2022-12-14 10:50:42,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:50:42,656 INFO L413 NwaCegarLoop]: 3288 mSDtfsCounter, 1228 mSDsluCounter, 5474 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 8762 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:42,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1728 Valid, 8762 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 10:50:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2022-12-14 10:50:42,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 1821. [2022-12-14 10:50:42,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 971 states have (on average 1.9505664263645726) internal successors, (1894), 1815 states have internal predecessors, (1894), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 10:50:42,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2900 transitions. [2022-12-14 10:50:42,838 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2900 transitions. Word has length 10 [2022-12-14 10:50:42,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:42,838 INFO L495 AbstractCegarLoop]: Abstraction has 1821 states and 2900 transitions. [2022-12-14 10:50:42,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:42,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2900 transitions. [2022-12-14 10:50:42,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 10:50:42,839 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:42,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:50:42,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:43,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:43,041 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:50:43,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:43,042 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-12-14 10:50:43,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:43,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700989102] [2022-12-14 10:50:43,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:43,044 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 [2022-12-14 10:50:43,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:43,047 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:50:43,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:43,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 10:50:43,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:43,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:43,263 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:43,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700989102] [2022-12-14 10:50:43,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700989102] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:43,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:43,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:50:43,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223195036] [2022-12-14 10:50:43,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:43,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:50:43,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:43,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:50:43,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:43,264 INFO L87 Difference]: Start difference. First operand 1821 states and 2900 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-12-14 10:50:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:43,302 INFO L93 Difference]: Finished difference Result 1790 states and 2868 transitions. [2022-12-14 10:50:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:50:43,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2022-12-14 10:50:43,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:43,306 INFO L225 Difference]: With dead ends: 1790 [2022-12-14 10:50:43,306 INFO L226 Difference]: Without dead ends: 1790 [2022-12-14 10:50:43,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:43,307 INFO L413 NwaCegarLoop]: 2785 mSDtfsCounter, 1764 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:43,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2267 Valid, 3312 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:50:43,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2022-12-14 10:50:43,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1779. [2022-12-14 10:50:43,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 953 states have (on average 1.9422875131164743) internal successors, (1851), 1773 states have internal predecessors, (1851), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 10:50:43,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2857 transitions. [2022-12-14 10:50:43,406 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2857 transitions. Word has length 18 [2022-12-14 10:50:43,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:43,406 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2857 transitions. [2022-12-14 10:50:43,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-12-14 10:50:43,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2857 transitions. [2022-12-14 10:50:43,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 10:50:43,407 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:43,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:50:43,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 10:50:43,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:43,607 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:50:43,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:43,608 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-12-14 10:50:43,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:43,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648336235] [2022-12-14 10:50:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:43,608 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 [2022-12-14 10:50:43,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:43,609 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:50:43,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:43,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:50:43,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:43,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:43,729 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:43,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648336235] [2022-12-14 10:50:43,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648336235] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:43,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:43,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:50:43,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124757854] [2022-12-14 10:50:43,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:43,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:50:43,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:43,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:50:43,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:50:43,730 INFO L87 Difference]: Start difference. First operand 1779 states and 2857 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2022-12-14 10:50:43,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:43,786 INFO L93 Difference]: Finished difference Result 1769 states and 2840 transitions. [2022-12-14 10:50:43,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:50:43,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 [2022-12-14 10:50:43,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:43,793 INFO L225 Difference]: With dead ends: 1769 [2022-12-14 10:50:43,793 INFO L226 Difference]: Without dead ends: 1769 [2022-12-14 10:50:43,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:50:43,794 INFO L413 NwaCegarLoop]: 2740 mSDtfsCounter, 1745 mSDsluCounter, 3260 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2248 SdHoareTripleChecker+Valid, 6000 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:43,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2248 Valid, 6000 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:50:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2022-12-14 10:50:43,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1757. [2022-12-14 10:50:43,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 945 states have (on average 1.928042328042328) internal successors, (1822), 1751 states have internal predecessors, (1822), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 10:50:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2828 transitions. [2022-12-14 10:50:43,903 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2828 transitions. Word has length 20 [2022-12-14 10:50:43,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:43,903 INFO L495 AbstractCegarLoop]: Abstraction has 1757 states and 2828 transitions. [2022-12-14 10:50:43,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2022-12-14 10:50:43,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2828 transitions. [2022-12-14 10:50:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 10:50:43,904 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:43,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:50:43,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:44,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:44,105 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:50:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-12-14 10:50:44,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:44,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469942168] [2022-12-14 10:50:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:44,106 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 [2022-12-14 10:50:44,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:44,107 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:50:44,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:44,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:50:44,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:44,222 INFO L350 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 [2022-12-14 10:50:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:44,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:44,266 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:44,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469942168] [2022-12-14 10:50:44,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469942168] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:44,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:44,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:50:44,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410789915] [2022-12-14 10:50:44,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:44,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:50:44,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:44,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:50:44,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:50:44,268 INFO L87 Difference]: Start difference. First operand 1757 states and 2828 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-12-14 10:50:47,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:47,256 INFO L93 Difference]: Finished difference Result 2977 states and 5069 transitions. [2022-12-14 10:50:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:50:47,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2022-12-14 10:50:47,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:47,271 INFO L225 Difference]: With dead ends: 2977 [2022-12-14 10:50:47,271 INFO L226 Difference]: Without dead ends: 2977 [2022-12-14 10:50:47,271 INFO L412 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 [2022-12-14 10:50:47,272 INFO L413 NwaCegarLoop]: 2884 mSDtfsCounter, 3333 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3333 SdHoareTripleChecker+Valid, 6224 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:47,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3333 Valid, 6224 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 10:50:47,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2022-12-14 10:50:47,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1753. [2022-12-14 10:50:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 945 states have (on average 1.9238095238095239) internal successors, (1818), 1747 states have internal predecessors, (1818), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 10:50:47,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2824 transitions. [2022-12-14 10:50:47,448 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2824 transitions. Word has length 34 [2022-12-14 10:50:47,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:47,449 INFO L495 AbstractCegarLoop]: Abstraction has 1753 states and 2824 transitions. [2022-12-14 10:50:47,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-12-14 10:50:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2824 transitions. [2022-12-14 10:50:47,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 10:50:47,449 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:47,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:50:47,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:47,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:47,651 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:50:47,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:47,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-12-14 10:50:47,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:47,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610734592] [2022-12-14 10:50:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:47,655 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 [2022-12-14 10:50:47,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:47,658 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:50:47,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:47,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 10:50:47,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:47,801 INFO L350 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 [2022-12-14 10:50:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:47,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:47,914 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:47,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610734592] [2022-12-14 10:50:47,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610734592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:47,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:47,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:50:47,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744784544] [2022-12-14 10:50:47,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:47,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:50:47,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:47,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:50:47,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:50:47,915 INFO L87 Difference]: Start difference. First operand 1753 states and 2824 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-12-14 10:50:52,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:52,505 INFO L93 Difference]: Finished difference Result 3018 states and 5078 transitions. [2022-12-14 10:50:52,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:50:52,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2022-12-14 10:50:52,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:52,516 INFO L225 Difference]: With dead ends: 3018 [2022-12-14 10:50:52,517 INFO L226 Difference]: Without dead ends: 3018 [2022-12-14 10:50:52,517 INFO L412 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 [2022-12-14 10:50:52,517 INFO L413 NwaCegarLoop]: 3077 mSDtfsCounter, 2786 mSDsluCounter, 3642 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2786 SdHoareTripleChecker+Valid, 6719 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:52,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2786 Valid, 6719 Invalid, 2838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 10:50:52,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2022-12-14 10:50:52,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1749. [2022-12-14 10:50:52,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 945 states have (on average 1.9195767195767195) internal successors, (1814), 1743 states have internal predecessors, (1814), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 10:50:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2820 transitions. [2022-12-14 10:50:52,704 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2820 transitions. Word has length 34 [2022-12-14 10:50:52,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:52,704 INFO L495 AbstractCegarLoop]: Abstraction has 1749 states and 2820 transitions. [2022-12-14 10:50:52,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-12-14 10:50:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2820 transitions. [2022-12-14 10:50:52,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 10:50:52,705 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:52,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:50:52,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:52,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:52,907 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:50:52,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:52,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1723497600, now seen corresponding path program 1 times [2022-12-14 10:50:52,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:52,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127268948] [2022-12-14 10:50:52,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:52,911 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 [2022-12-14 10:50:52,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:52,914 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:50:52,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:53,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:50:53,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:53,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:53,126 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:53,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127268948] [2022-12-14 10:50:53,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127268948] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:53,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:53,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:50:53,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525284582] [2022-12-14 10:50:53,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:53,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:50:53,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:53,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:50:53,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:50:53,127 INFO L87 Difference]: Start difference. First operand 1749 states and 2820 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) [2022-12-14 10:50:53,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:53,182 INFO L93 Difference]: Finished difference Result 1754 states and 2821 transitions. [2022-12-14 10:50:53,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:50:53,183 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 [2022-12-14 10:50:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:53,188 INFO L225 Difference]: With dead ends: 1754 [2022-12-14 10:50:53,188 INFO L226 Difference]: Without dead ends: 1754 [2022-12-14 10:50:53,188 INFO L412 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 [2022-12-14 10:50:53,189 INFO L413 NwaCegarLoop]: 2734 mSDtfsCounter, 1714 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 5978 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:53,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2217 Valid, 5978 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:50:53,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2022-12-14 10:50:53,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1743. [2022-12-14 10:50:53,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1743 states, 939 states have (on average 1.9211927582534611) internal successors, (1804), 1737 states have internal predecessors, (1804), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-12-14 10:50:53,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2810 transitions. [2022-12-14 10:50:53,308 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2810 transitions. Word has length 49 [2022-12-14 10:50:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:53,308 INFO L495 AbstractCegarLoop]: Abstraction has 1743 states and 2810 transitions. [2022-12-14 10:50:53,308 INFO L496 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) [2022-12-14 10:50:53,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2810 transitions. [2022-12-14 10:50:53,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 10:50:53,309 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:53,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:50:53,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:53,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:53,511 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:50:53,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:53,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2061892788, now seen corresponding path program 1 times [2022-12-14 10:50:53,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:53,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77107233] [2022-12-14 10:50:53,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:53,515 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 [2022-12-14 10:50:53,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:53,518 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:50:53,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:53,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:50:53,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:53,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:53,900 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:53,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77107233] [2022-12-14 10:50:53,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77107233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:53,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:53,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:50:53,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28553799] [2022-12-14 10:50:53,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:53,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:50:53,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:53,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:50:53,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:53,902 INFO L87 Difference]: Start difference. First operand 1743 states and 2810 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) [2022-12-14 10:50:54,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:54,023 INFO L93 Difference]: Finished difference Result 2935 states and 5014 transitions. [2022-12-14 10:50:54,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:50:54,023 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 [2022-12-14 10:50:54,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:54,028 INFO L225 Difference]: With dead ends: 2935 [2022-12-14 10:50:54,028 INFO L226 Difference]: Without dead ends: 2935 [2022-12-14 10:50:54,028 INFO L412 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 [2022-12-14 10:50:54,029 INFO L413 NwaCegarLoop]: 3371 mSDtfsCounter, 1219 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 5994 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:54,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 5994 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:50:54,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2022-12-14 10:50:54,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2880. [2022-12-14 10:50:54,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 1576 states have (on average 1.906725888324873) internal successors, (3005), 2874 states have internal predecessors, (3005), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 10:50:54,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 5011 transitions. [2022-12-14 10:50:54,210 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 5011 transitions. Word has length 57 [2022-12-14 10:50:54,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:54,210 INFO L495 AbstractCegarLoop]: Abstraction has 2880 states and 5011 transitions. [2022-12-14 10:50:54,210 INFO L496 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) [2022-12-14 10:50:54,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 5011 transitions. [2022-12-14 10:50:54,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 10:50:54,211 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:54,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:50:54,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:54,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:54,411 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:50:54,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:54,412 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-12-14 10:50:54,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:54,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110119561] [2022-12-14 10:50:54,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:54,412 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 [2022-12-14 10:50:54,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:54,413 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:50:54,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:54,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:50:54,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:54,643 INFO L350 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 [2022-12-14 10:50:54,647 INFO L350 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 [2022-12-14 10:50:54,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:50:54,977 INFO L350 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 [2022-12-14 10:50:54,988 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:50:54,988 INFO L350 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 [2022-12-14 10:50:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:55,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:55,000 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:55,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110119561] [2022-12-14 10:50:55,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110119561] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:55,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:55,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:50:55,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212602925] [2022-12-14 10:50:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:55,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:50:55,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:55,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:50:55,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:50:55,002 INFO L87 Difference]: Start difference. First operand 2880 states and 5011 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-12-14 10:50:58,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:58,657 INFO L93 Difference]: Finished difference Result 5141 states and 9357 transitions. [2022-12-14 10:50:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:50:58,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2022-12-14 10:50:58,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:58,666 INFO L225 Difference]: With dead ends: 5141 [2022-12-14 10:50:58,666 INFO L226 Difference]: Without dead ends: 5141 [2022-12-14 10:50:58,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:50:58,667 INFO L413 NwaCegarLoop]: 2745 mSDtfsCounter, 2859 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3862 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:58,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3862 Valid, 3868 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-14 10:50:58,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5141 states. [2022-12-14 10:50:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5141 to 2810. [2022-12-14 10:50:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2810 states, 1544 states have (on average 1.8788860103626943) internal successors, (2901), 2804 states have internal predecessors, (2901), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 10:50:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2810 states to 2810 states and 4907 transitions. [2022-12-14 10:50:59,025 INFO L78 Accepts]: Start accepts. Automaton has 2810 states and 4907 transitions. Word has length 60 [2022-12-14 10:50:59,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:59,025 INFO L495 AbstractCegarLoop]: Abstraction has 2810 states and 4907 transitions. [2022-12-14 10:50:59,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-12-14 10:50:59,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2810 states and 4907 transitions. [2022-12-14 10:50:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 10:50:59,026 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:59,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:50:59,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-14 10:50:59,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:59,227 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:50:59,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:59,229 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-12-14 10:50:59,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:59,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162642842] [2022-12-14 10:50:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:59,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:59,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:59,231 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:50:59,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:50:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:59,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:50:59,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:59,431 INFO L350 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 [2022-12-14 10:50:59,440 INFO L350 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 [2022-12-14 10:50:59,460 INFO L350 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 [2022-12-14 10:50:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:59,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:59,467 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:59,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162642842] [2022-12-14 10:50:59,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162642842] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:59,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:59,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:50:59,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35187443] [2022-12-14 10:50:59,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:59,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:50:59,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:59,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:50:59,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:50:59,468 INFO L87 Difference]: Start difference. First operand 2810 states and 4907 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:51:01,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:01,112 INFO L93 Difference]: Finished difference Result 2809 states and 4906 transitions. [2022-12-14 10:51:01,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:51:01,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 10:51:01,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:01,119 INFO L225 Difference]: With dead ends: 2809 [2022-12-14 10:51:01,120 INFO L226 Difference]: Without dead ends: 2809 [2022-12-14 10:51:01,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:51:01,120 INFO L413 NwaCegarLoop]: 2694 mSDtfsCounter, 4 mSDsluCounter, 7087 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9781 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:01,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9781 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 10:51:01,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2022-12-14 10:51:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2809. [2022-12-14 10:51:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 1544 states have (on average 1.878238341968912) internal successors, (2900), 2803 states have internal predecessors, (2900), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 10:51:01,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 4906 transitions. [2022-12-14 10:51:01,310 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 4906 transitions. Word has length 65 [2022-12-14 10:51:01,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:01,311 INFO L495 AbstractCegarLoop]: Abstraction has 2809 states and 4906 transitions. [2022-12-14 10:51:01,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:51:01,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 4906 transitions. [2022-12-14 10:51:01,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 10:51:01,311 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:01,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:01,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:51:01,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:51:01,512 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:51:01,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:01,512 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-12-14 10:51:01,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:51:01,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372680957] [2022-12-14 10:51:01,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:01,513 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 [2022-12-14 10:51:01,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:51:01,513 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:51:01,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:51:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:01,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 10:51:01,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:51:01,723 INFO L350 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 [2022-12-14 10:51:01,733 INFO L350 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 [2022-12-14 10:51:01,739 INFO L350 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 [2022-12-14 10:51:01,783 INFO L350 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 [2022-12-14 10:51:01,788 INFO L350 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 19 treesize of output 7 [2022-12-14 10:51:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:01,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:51:01,798 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:51:01,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372680957] [2022-12-14 10:51:01,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372680957] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:01,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:01,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:51:01,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659271238] [2022-12-14 10:51:01,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:01,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:51:01,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:51:01,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:51:01,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:51:01,800 INFO L87 Difference]: Start difference. First operand 2809 states and 4906 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:51:04,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:04,135 INFO L93 Difference]: Finished difference Result 2808 states and 4905 transitions. [2022-12-14 10:51:04,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:51:04,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 10:51:04,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:04,141 INFO L225 Difference]: With dead ends: 2808 [2022-12-14 10:51:04,141 INFO L226 Difference]: Without dead ends: 2808 [2022-12-14 10:51:04,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:51:04,142 INFO L413 NwaCegarLoop]: 2694 mSDtfsCounter, 2 mSDsluCounter, 7107 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9801 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:04,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 9801 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 10:51:04,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2022-12-14 10:51:04,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2808. [2022-12-14 10:51:04,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2808 states, 1543 states have (on average 1.878807517822424) internal successors, (2899), 2802 states have internal predecessors, (2899), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-12-14 10:51:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 4905 transitions. [2022-12-14 10:51:04,325 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 4905 transitions. Word has length 65 [2022-12-14 10:51:04,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:04,326 INFO L495 AbstractCegarLoop]: Abstraction has 2808 states and 4905 transitions. [2022-12-14 10:51:04,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:51:04,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 4905 transitions. [2022-12-14 10:51:04,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 10:51:04,331 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:04,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:04,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:51:04,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:51:04,532 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:51:04,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:04,532 INFO L85 PathProgramCache]: Analyzing trace with hash 96402255, now seen corresponding path program 1 times [2022-12-14 10:51:04,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:51:04,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327237222] [2022-12-14 10:51:04,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:04,533 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 [2022-12-14 10:51:04,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:51:04,533 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:51:04,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:51:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:04,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:51:04,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:51:04,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:04,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:51:04,774 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:51:04,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327237222] [2022-12-14 10:51:04,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327237222] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:51:04,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:51:04,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:51:04,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270804805] [2022-12-14 10:51:04,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:51:04,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:51:04,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:51:04,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:51:04,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:51:04,775 INFO L87 Difference]: Start difference. First operand 2808 states and 4905 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2022-12-14 10:51:04,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:04,851 INFO L93 Difference]: Finished difference Result 2811 states and 4909 transitions. [2022-12-14 10:51:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:51:04,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 73 [2022-12-14 10:51:04,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:04,863 INFO L225 Difference]: With dead ends: 2811 [2022-12-14 10:51:04,863 INFO L226 Difference]: Without dead ends: 2811 [2022-12-14 10:51:04,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:51:04,864 INFO L413 NwaCegarLoop]: 2694 mSDtfsCounter, 2 mSDsluCounter, 5383 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8077 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:04,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8077 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:51:04,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2022-12-14 10:51:05,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2811. [2022-12-14 10:51:05,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 1545 states have (on average 1.8783171521035598) internal successors, (2902), 2805 states have internal predecessors, (2902), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-12-14 10:51:05,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4909 transitions. [2022-12-14 10:51:05,133 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4909 transitions. Word has length 73 [2022-12-14 10:51:05,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:05,133 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4909 transitions. [2022-12-14 10:51:05,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2022-12-14 10:51:05,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4909 transitions. [2022-12-14 10:51:05,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 10:51:05,134 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:05,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:05,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:51:05,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:51:05,335 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:51:05,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:05,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1565083746, now seen corresponding path program 1 times [2022-12-14 10:51:05,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:51:05,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367938744] [2022-12-14 10:51:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:05,336 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 [2022-12-14 10:51:05,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:51:05,337 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:51:05,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:51:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:05,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:51:05,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:51:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:05,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:51:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:05,676 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:51:05,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367938744] [2022-12-14 10:51:05,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367938744] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:51:05,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1299819680] [2022-12-14 10:51:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:05,677 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:51:05,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:51:05,678 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:51:05,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-12-14 10:51:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:06,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:51:06,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:51:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:06,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:51:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:06,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1299819680] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:51:06,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330290672] [2022-12-14 10:51:06,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:06,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:51:06,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:51:06,081 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:51:06,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 10:51:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:06,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:51:06,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:51:06,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:06,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:51:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:06,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330290672] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:51:06,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:51:06,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 10:51:06,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908861302] [2022-12-14 10:51:06,326 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:51:06,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:51:06,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:51:06,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:51:06,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:51:06,328 INFO L87 Difference]: Start difference. First operand 2811 states and 4909 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2022-12-14 10:51:06,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:06,507 INFO L93 Difference]: Finished difference Result 2823 states and 4926 transitions. [2022-12-14 10:51:06,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 10:51:06,507 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 74 [2022-12-14 10:51:06,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:06,516 INFO L225 Difference]: With dead ends: 2823 [2022-12-14 10:51:06,516 INFO L226 Difference]: Without dead ends: 2823 [2022-12-14 10:51:06,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:51:06,517 INFO L413 NwaCegarLoop]: 2695 mSDtfsCounter, 11 mSDsluCounter, 8074 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10769 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:06,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 10769 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:51:06,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2022-12-14 10:51:06,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2821. [2022-12-14 10:51:06,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 1554 states have (on average 1.877091377091377) internal successors, (2917), 2814 states have internal predecessors, (2917), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-12-14 10:51:06,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4924 transitions. [2022-12-14 10:51:06,743 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4924 transitions. Word has length 74 [2022-12-14 10:51:06,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:06,743 INFO L495 AbstractCegarLoop]: Abstraction has 2821 states and 4924 transitions. [2022-12-14 10:51:06,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2022-12-14 10:51:06,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4924 transitions. [2022-12-14 10:51:06,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 10:51:06,743 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:06,743 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:06,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-14 10:51:06,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-14 10:51:07,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2022-12-14 10:51:07,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 10:51:07,345 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:51:07,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:07,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1133303793, now seen corresponding path program 2 times [2022-12-14 10:51:07,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:51:07,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051042862] [2022-12-14 10:51:07,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:51:07,347 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 [2022-12-14 10:51:07,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:51:07,349 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:51:07,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:51:07,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:51:07,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:51:07,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:51:07,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:51:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:07,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:51:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:07,964 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:51:07,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051042862] [2022-12-14 10:51:07,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051042862] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:51:07,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1961022788] [2022-12-14 10:51:07,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:51:07,964 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:51:07,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:51:07,965 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:51:07,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-12-14 10:51:09,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:51:09,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:51:09,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:51:09,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:51:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:09,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:51:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:09,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1961022788] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:51:09,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342948572] [2022-12-14 10:51:09,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:51:09,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:51:09,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:51:09,250 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:51:09,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 10:51:26,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:51:26,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:51:26,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 10:51:26,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:51:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:26,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:51:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:26,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342948572] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:51:26,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:51:26,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-12-14 10:51:26,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584299676] [2022-12-14 10:51:26,350 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:51:26,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 10:51:26,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:51:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 10:51:26,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-12-14 10:51:26,352 INFO L87 Difference]: Start difference. First operand 2821 states and 4924 transitions. Second operand has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 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) [2022-12-14 10:51:27,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:27,156 INFO L93 Difference]: Finished difference Result 2842 states and 4951 transitions. [2022-12-14 10:51:27,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 10:51:27,157 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 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 77 [2022-12-14 10:51:27,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:27,163 INFO L225 Difference]: With dead ends: 2842 [2022-12-14 10:51:27,163 INFO L226 Difference]: Without dead ends: 2836 [2022-12-14 10:51:27,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 10:51:27,164 INFO L413 NwaCegarLoop]: 2697 mSDtfsCounter, 29 mSDsluCounter, 16159 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 18856 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:27,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 18856 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:51:27,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2022-12-14 10:51:27,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 2830. [2022-12-14 10:51:27,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2830 states, 1563 states have (on average 1.873320537428023) internal successors, (2928), 2823 states have internal predecessors, (2928), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-12-14 10:51:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 4935 transitions. [2022-12-14 10:51:27,369 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 4935 transitions. Word has length 77 [2022-12-14 10:51:27,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:27,370 INFO L495 AbstractCegarLoop]: Abstraction has 2830 states and 4935 transitions. [2022-12-14 10:51:27,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 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) [2022-12-14 10:51:27,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 4935 transitions. [2022-12-14 10:51:27,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 10:51:27,370 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:27,370 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:51:27,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2022-12-14 10:51:27,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-14 10:51:27,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-14 10:51:27,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:51:27,973 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-12-14 10:51:27,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:27,974 INFO L85 PathProgramCache]: Analyzing trace with hash -269207761, now seen corresponding path program 3 times [2022-12-14 10:51:27,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:51:27,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727080532] [2022-12-14 10:51:27,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:51:27,976 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 [2022-12-14 10:51:27,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:51:27,977 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 10:51:27,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 10:51:28,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 10:51:28,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:51:28,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 10:51:28,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:51:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:28,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:51:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:29,375 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:51:29,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727080532] [2022-12-14 10:51:29,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727080532] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:51:29,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [102723226] [2022-12-14 10:51:29,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:51:29,375 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:51:29,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:51:29,376 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:51:29,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-12-14 10:51:33,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 10:51:33,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:51:33,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 10:51:33,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:51:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:33,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:51:33,664 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:51:33,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [102723226] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:51:33,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319953161] [2022-12-14 10:51:33,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:51:33,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:51:33,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:51:33,666 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:51:33,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc407d3-6f01-4a70-a3af-d19606343173/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process