./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 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_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW --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 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f --- 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-4e7fbc6 [2022-11-23 14:40:41,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:40:41,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:40:41,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:40:41,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:40:41,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:40:41,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:40:41,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:40:41,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:40:41,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:40:41,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:40:41,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:40:41,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:40:41,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:40:41,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:40:41,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:40:41,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:40:41,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:40:41,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:40:41,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:40:41,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:40:41,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:40:41,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:40:41,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:40:41,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:40:41,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:40:41,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:40:41,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:40:41,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:40:41,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:40:41,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:40:41,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:40:41,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:40:41,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:40:41,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:40:41,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:40:41,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:40:41,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:40:41,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:40:41,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:40:41,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:40:41,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 14:40:41,831 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:40:41,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:40:41,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:40:41,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:40:41,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:40:41,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:40:41,833 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:40:41,833 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:40:41,834 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:40:41,834 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:40:41,835 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:40:41,835 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:40:41,835 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:40:41,836 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:40:41,836 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:40:41,836 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:40:41,836 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:40:41,836 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:40:41,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 14:40:41,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 14:40:41,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:40:41,838 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:40:41,838 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:40:41,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:40:41,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:40:41,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:40:41,839 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 14:40:41,839 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 14:40:41,839 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 14:40:41,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:40:41,840 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:40:41,841 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:40:41,842 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:40:41,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:40:41,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:40:41,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:40:41,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:40:41,843 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:40:41,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:40:41,844 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:40:41,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:40:41,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:40:41,844 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_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f [2022-11-23 14:40:42,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:40:42,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:40:42,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:40:42,204 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:40:42,205 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:40:42,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2022-11-23 14:40:45,328 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:40:45,688 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:40:45,689 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2022-11-23 14:40:45,717 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/data/e8657578b/ec50d1d18e7c4854a2446a84b7c29acd/FLAGeab03c3cc [2022-11-23 14:40:45,732 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/data/e8657578b/ec50d1d18e7c4854a2446a84b7c29acd [2022-11-23 14:40:45,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:40:45,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:40:45,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:40:45,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:40:45,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:40:45,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:40:45" (1/1) ... [2022-11-23 14:40:45,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@551bc3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:45, skipping insertion in model container [2022-11-23 14:40:45,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:40:45" (1/1) ... [2022-11-23 14:40:45,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:40:45,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:40:46,242 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_facc87b3-664d-482d-a716-a9690ece3725/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[33021,33034] [2022-11-23 14:40:46,433 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_facc87b3-664d-482d-a716-a9690ece3725/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44124,44137] [2022-11-23 14:40:46,435 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_facc87b3-664d-482d-a716-a9690ece3725/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44245,44258] [2022-11-23 14:40:46,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:40:46,482 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) [2022-11-23 14:40:46,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@c325d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:46, skipping insertion in model container [2022-11-23 14:40:46,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:40:46,484 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-23 14:40:46,486 INFO L158 Benchmark]: Toolchain (without parser) took 749.29ms. Allocated memory is still 159.4MB. Free memory was 122.4MB in the beginning and 112.9MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 14:40:46,487 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 121.6MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:40:46,488 INFO L158 Benchmark]: CACSL2BoogieTranslator took 746.45ms. Allocated memory is still 159.4MB. Free memory was 122.4MB in the beginning and 112.9MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 14:40:46,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 121.6MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 746.45ms. Allocated memory is still 159.4MB. Free memory was 122.4MB in the beginning and 112.9MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW --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 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f --- 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-4e7fbc6 [2022-11-23 14:40:48,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:40:48,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:40:48,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:40:48,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:40:48,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:40:48,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:40:48,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:40:48,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:40:48,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:40:48,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:40:48,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:40:48,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:40:48,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:40:48,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:40:48,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:40:48,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:40:48,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:40:48,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:40:48,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:40:48,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:40:48,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:40:48,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:40:48,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:40:48,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:40:48,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:40:48,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:40:48,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:40:48,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:40:48,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:40:48,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:40:48,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:40:48,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:40:48,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:40:48,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:40:48,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:40:48,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:40:48,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:40:48,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:40:48,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:40:48,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:40:48,890 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-23 14:40:48,939 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:40:48,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:40:48,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:40:48,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:40:48,942 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:40:48,942 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:40:48,942 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:40:48,942 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:40:48,942 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:40:48,943 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:40:48,944 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:40:48,944 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:40:48,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 14:40:48,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 14:40:48,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:40:48,945 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:40:48,946 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:40:48,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:40:48,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:40:48,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:40:48,946 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 14:40:48,947 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 14:40:48,947 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 14:40:48,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:40:48,947 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:40:48,947 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:40:48,948 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:40:48,948 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:40:48,948 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:40:48,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:40:48,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:40:48,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:40:48,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:40:48,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:40:48,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:40:48,950 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:40:48,950 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:40:48,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:40:48,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:40:48,951 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_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f [2022-11-23 14:40:49,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:40:49,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:40:49,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:40:49,318 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:40:49,319 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:40:49,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2022-11-23 14:40:52,631 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:40:52,978 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:40:52,978 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2022-11-23 14:40:52,999 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/data/4d5123fcd/2ca08b7b9cdd47e693b075d8af1afcbc/FLAG0f944bba6 [2022-11-23 14:40:53,022 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/data/4d5123fcd/2ca08b7b9cdd47e693b075d8af1afcbc [2022-11-23 14:40:53,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:40:53,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:40:53,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:40:53,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:40:53,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:40:53,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:40:53" (1/1) ... [2022-11-23 14:40:53,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4ea445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:53, skipping insertion in model container [2022-11-23 14:40:53,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:40:53" (1/1) ... [2022-11-23 14:40:53,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:40:53,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:40:53,530 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_facc87b3-664d-482d-a716-a9690ece3725/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[33021,33034] [2022-11-23 14:40:53,754 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_facc87b3-664d-482d-a716-a9690ece3725/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44124,44137] [2022-11-23 14:40:53,759 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_facc87b3-664d-482d-a716-a9690ece3725/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44245,44258] [2022-11-23 14:40:53,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:40:53,794 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-23 14:40:53,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:40:53,827 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_facc87b3-664d-482d-a716-a9690ece3725/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[33021,33034] [2022-11-23 14:40:53,873 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_facc87b3-664d-482d-a716-a9690ece3725/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44124,44137] [2022-11-23 14:40:53,874 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_facc87b3-664d-482d-a716-a9690ece3725/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44245,44258] [2022-11-23 14:40:53,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:40:53,920 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:40:53,951 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_facc87b3-664d-482d-a716-a9690ece3725/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[33021,33034] [2022-11-23 14:40:54,019 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_facc87b3-664d-482d-a716-a9690ece3725/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44124,44137] [2022-11-23 14:40:54,020 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_facc87b3-664d-482d-a716-a9690ece3725/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44245,44258] [2022-11-23 14:40:54,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:40:54,067 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:40:54,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:54 WrapperNode [2022-11-23 14:40:54,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:40:54,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:40:54,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:40:54,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:40:54,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:54" (1/1) ... [2022-11-23 14:40:54,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:54" (1/1) ... [2022-11-23 14:40:54,173 INFO L138 Inliner]: procedures = 179, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1171 [2022-11-23 14:40:54,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:40:54,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:40:54,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:40:54,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:40:54,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:54" (1/1) ... [2022-11-23 14:40:54,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:54" (1/1) ... [2022-11-23 14:40:54,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:54" (1/1) ... [2022-11-23 14:40:54,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:54" (1/1) ... [2022-11-23 14:40:54,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:54" (1/1) ... [2022-11-23 14:40:54,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:54" (1/1) ... [2022-11-23 14:40:54,342 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:54" (1/1) ... [2022-11-23 14:40:54,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:54" (1/1) ... [2022-11-23 14:40:54,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:40:54,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:40:54,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:40:54,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:40:54,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:54" (1/1) ... [2022-11-23 14:40:54,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:40:54,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:40:54,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:40:54,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:40:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-23 14:40:54,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 14:40:54,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:40:54,448 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:40:54,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:40:54,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:40:54,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:40:54,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:40:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 14:40:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:40:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:40:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 14:40:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 14:40:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:40:54,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:40:54,775 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:40:54,780 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:40:54,790 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:41:00,438 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:41:00,451 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:41:00,452 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-11-23 14:41:00,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:00 BoogieIcfgContainer [2022-11-23 14:41:00,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:41:00,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:41:00,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:41:00,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:41:00,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:40:53" (1/3) ... [2022-11-23 14:41:00,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5481eb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:00, skipping insertion in model container [2022-11-23 14:41:00,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:40:54" (2/3) ... [2022-11-23 14:41:00,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5481eb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:41:00, skipping insertion in model container [2022-11-23 14:41:00,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:41:00" (3/3) ... [2022-11-23 14:41:00,464 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test7-2.i [2022-11-23 14:41:00,485 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:41:00,485 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 635 error locations. [2022-11-23 14:41:00,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:41:00,555 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;@6eaeeb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:41:00,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 635 error locations. [2022-11-23 14:41:00,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 1248 states, 611 states have (on average 2.2667757774140753) internal successors, (1385), 1243 states have internal predecessors, (1385), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:00,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 14:41:00,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:00,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 14:41:00,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:00,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:00,577 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-11-23 14:41:00,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:00,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478520733] [2022-11-23 14:41:00,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:00,590 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 [2022-11-23 14:41:00,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:00,592 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:00,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:00,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:41:00,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:00,875 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 [2022-11-23 14:41:00,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:00,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:00,917 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:00,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478520733] [2022-11-23 14:41:00,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478520733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:00,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:00,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:41:00,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91914725] [2022-11-23 14:41:00,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:00,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:00,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:00,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:00,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:00,977 INFO L87 Difference]: Start difference. First operand has 1248 states, 611 states have (on average 2.2667757774140753) internal successors, (1385), 1243 states have internal predecessors, (1385), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2022-11-23 14:41:03,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:03,851 INFO L93 Difference]: Finished difference Result 1416 states and 1490 transitions. [2022-11-23 14:41:03,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:03,855 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 [2022-11-23 14:41:03,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:03,874 INFO L225 Difference]: With dead ends: 1416 [2022-11-23 14:41:03,874 INFO L226 Difference]: Without dead ends: 1414 [2022-11-23 14:41:03,876 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 [2022-11-23 14:41:03,879 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 1158 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:03,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 891 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-23 14:41:03,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2022-11-23 14:41:03,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1229. [2022-11-23 14:41:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 609 states have (on average 2.116584564860427) internal successors, (1289), 1224 states have internal predecessors, (1289), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:03,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1295 transitions. [2022-11-23 14:41:03,990 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1295 transitions. Word has length 3 [2022-11-23 14:41:03,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:03,991 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 1295 transitions. [2022-11-23 14:41:03,991 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) [2022-11-23 14:41:03,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1295 transitions. [2022-11-23 14:41:03,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 14:41:03,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:03,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 14:41:04,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:04,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:04,202 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:04,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:04,203 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-11-23 14:41:04,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:04,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607049114] [2022-11-23 14:41:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:04,204 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 [2022-11-23 14:41:04,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:04,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:04,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:04,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:41:04,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:04,363 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 [2022-11-23 14:41:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:04,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:04,378 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:04,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607049114] [2022-11-23 14:41:04,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607049114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:04,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:04,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:41:04,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944687199] [2022-11-23 14:41:04,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:04,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:04,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:04,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:04,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:04,382 INFO L87 Difference]: Start difference. First operand 1229 states and 1295 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) [2022-11-23 14:41:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:08,932 INFO L93 Difference]: Finished difference Result 1818 states and 1924 transitions. [2022-11-23 14:41:08,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:08,932 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 [2022-11-23 14:41:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:08,939 INFO L225 Difference]: With dead ends: 1818 [2022-11-23 14:41:08,940 INFO L226 Difference]: Without dead ends: 1818 [2022-11-23 14:41:08,940 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 [2022-11-23 14:41:08,942 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 629 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:08,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 1686 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-23 14:41:08,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-11-23 14:41:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1430. [2022-11-23 14:41:08,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 811 states have (on average 2.098643649815043) internal successors, (1702), 1425 states have internal predecessors, (1702), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:08,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1708 transitions. [2022-11-23 14:41:08,996 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1708 transitions. Word has length 3 [2022-11-23 14:41:08,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:08,997 INFO L495 AbstractCegarLoop]: Abstraction has 1430 states and 1708 transitions. [2022-11-23 14:41:08,997 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) [2022-11-23 14:41:08,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1708 transitions. [2022-11-23 14:41:08,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 14:41:08,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:08,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:09,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:09,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:09,210 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:09,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:09,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-11-23 14:41:09,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:09,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972900214] [2022-11-23 14:41:09,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:09,212 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 [2022-11-23 14:41:09,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:09,213 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:09,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:09,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 14:41:09,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:09,406 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 [2022-11-23 14:41:09,413 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 [2022-11-23 14:41:09,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:41:09,499 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 [2022-11-23 14:41:09,521 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 14:41:09,521 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 [2022-11-23 14:41:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:09,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:09,550 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:09,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972900214] [2022-11-23 14:41:09,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972900214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:09,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:09,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:09,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670858144] [2022-11-23 14:41:09,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:09,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:41:09,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:09,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:41:09,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:41:09,556 INFO L87 Difference]: Start difference. First operand 1430 states and 1708 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) [2022-11-23 14:41:13,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:13,983 INFO L93 Difference]: Finished difference Result 1608 states and 1897 transitions. [2022-11-23 14:41:13,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:41:13,984 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 [2022-11-23 14:41:13,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:13,989 INFO L225 Difference]: With dead ends: 1608 [2022-11-23 14:41:13,989 INFO L226 Difference]: Without dead ends: 1608 [2022-11-23 14:41:13,990 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 [2022-11-23 14:41:13,991 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 2586 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2589 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:13,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2589 Valid, 501 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-23 14:41:13,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-11-23 14:41:14,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1218. [2022-11-23 14:41:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 609 states have (on average 2.09688013136289) internal successors, (1277), 1213 states have internal predecessors, (1277), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1283 transitions. [2022-11-23 14:41:14,020 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1283 transitions. Word has length 7 [2022-11-23 14:41:14,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:14,020 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 1283 transitions. [2022-11-23 14:41:14,020 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) [2022-11-23 14:41:14,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1283 transitions. [2022-11-23 14:41:14,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:41:14,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:14,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:14,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:14,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:14,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:14,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:14,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-11-23 14:41:14,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:14,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777808298] [2022-11-23 14:41:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:14,251 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 [2022-11-23 14:41:14,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:14,253 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:14,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:14,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:41:14,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:14,454 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 [2022-11-23 14:41:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:14,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:14,470 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:14,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777808298] [2022-11-23 14:41:14,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777808298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:14,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:14,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:41:14,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96382663] [2022-11-23 14:41:14,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:14,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:14,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:14,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:14,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:14,479 INFO L87 Difference]: Start difference. First operand 1218 states and 1283 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) [2022-11-23 14:41:17,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:17,189 INFO L93 Difference]: Finished difference Result 1547 states and 1641 transitions. [2022-11-23 14:41:17,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:17,191 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 [2022-11-23 14:41:17,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:17,195 INFO L225 Difference]: With dead ends: 1547 [2022-11-23 14:41:17,195 INFO L226 Difference]: Without dead ends: 1547 [2022-11-23 14:41:17,196 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 [2022-11-23 14:41:17,197 INFO L413 NwaCegarLoop]: 1131 mSDtfsCounter, 971 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:17,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 1474 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 14:41:17,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-11-23 14:41:17,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1171. [2022-11-23 14:41:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 609 states have (on average 2.019704433497537) internal successors, (1230), 1166 states have internal predecessors, (1230), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:17,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1236 transitions. [2022-11-23 14:41:17,223 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1236 transitions. Word has length 8 [2022-11-23 14:41:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:17,223 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1236 transitions. [2022-11-23 14:41:17,224 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) [2022-11-23 14:41:17,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1236 transitions. [2022-11-23 14:41:17,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:41:17,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:17,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:17,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:17,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:17,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:17,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:17,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-11-23 14:41:17,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:17,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866724501] [2022-11-23 14:41:17,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:17,437 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 [2022-11-23 14:41:17,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:17,438 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:17,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:17,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:41:17,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:17,606 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 [2022-11-23 14:41:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:17,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:17,633 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:17,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866724501] [2022-11-23 14:41:17,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866724501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:17,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:17,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:41:17,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182515469] [2022-11-23 14:41:17,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:17,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:17,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:17,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:17,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:17,635 INFO L87 Difference]: Start difference. First operand 1171 states and 1236 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) [2022-11-23 14:41:21,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:21,310 INFO L93 Difference]: Finished difference Result 1626 states and 1723 transitions. [2022-11-23 14:41:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:21,311 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 [2022-11-23 14:41:21,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:21,316 INFO L225 Difference]: With dead ends: 1626 [2022-11-23 14:41:21,317 INFO L226 Difference]: Without dead ends: 1626 [2022-11-23 14:41:21,317 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 [2022-11-23 14:41:21,318 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 674 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:21,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1851 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-23 14:41:21,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2022-11-23 14:41:21,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1193. [2022-11-23 14:41:21,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 641 states have (on average 2.0062402496099843) internal successors, (1286), 1188 states have internal predecessors, (1286), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:21,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1292 transitions. [2022-11-23 14:41:21,344 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1292 transitions. Word has length 8 [2022-11-23 14:41:21,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:21,344 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 1292 transitions. [2022-11-23 14:41:21,345 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) [2022-11-23 14:41:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1292 transitions. [2022-11-23 14:41:21,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:41:21,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:21,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:21,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:21,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:21,562 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:21,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:21,564 INFO L85 PathProgramCache]: Analyzing trace with hash 693877877, now seen corresponding path program 1 times [2022-11-23 14:41:21,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:21,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314733604] [2022-11-23 14:41:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:21,565 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 [2022-11-23 14:41:21,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:21,566 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:21,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:21,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:41:21,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:21,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:21,843 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:21,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314733604] [2022-11-23 14:41:21,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314733604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:21,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:21,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:41:21,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192350588] [2022-11-23 14:41:21,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:21,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:41:21,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:21,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:41:21,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:41:21,849 INFO L87 Difference]: Start difference. First operand 1193 states and 1292 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-23 14:41:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:22,829 INFO L93 Difference]: Finished difference Result 1840 states and 1982 transitions. [2022-11-23 14:41:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:41:22,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-11-23 14:41:22,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:22,836 INFO L225 Difference]: With dead ends: 1840 [2022-11-23 14:41:22,837 INFO L226 Difference]: Without dead ends: 1840 [2022-11-23 14:41:22,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:41:22,838 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 755 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:22,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 3639 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:41:22,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2022-11-23 14:41:22,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1438. [2022-11-23 14:41:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 886 states have (on average 1.9706546275395034) internal successors, (1746), 1433 states have internal predecessors, (1746), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1752 transitions. [2022-11-23 14:41:22,868 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1752 transitions. Word has length 11 [2022-11-23 14:41:22,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:22,869 INFO L495 AbstractCegarLoop]: Abstraction has 1438 states and 1752 transitions. [2022-11-23 14:41:22,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-23 14:41:22,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1752 transitions. [2022-11-23 14:41:22,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:41:22,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:22,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:22,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:23,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:23,081 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:23,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash 518331069, now seen corresponding path program 1 times [2022-11-23 14:41:23,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:23,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216723328] [2022-11-23 14:41:23,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:23,082 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 [2022-11-23 14:41:23,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:23,083 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:23,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:23,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:41:23,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:23,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:23,265 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:23,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216723328] [2022-11-23 14:41:23,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216723328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:23,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:23,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:23,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320719907] [2022-11-23 14:41:23,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:23,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:23,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:23,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:23,268 INFO L87 Difference]: Start difference. First operand 1438 states and 1752 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:23,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:23,302 INFO L93 Difference]: Finished difference Result 1600 states and 1900 transitions. [2022-11-23 14:41:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:23,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 14:41:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:23,317 INFO L225 Difference]: With dead ends: 1600 [2022-11-23 14:41:23,317 INFO L226 Difference]: Without dead ends: 1600 [2022-11-23 14:41:23,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:23,318 INFO L413 NwaCegarLoop]: 1180 mSDtfsCounter, 583 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1994 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 [2022-11-23 14:41:23,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1994 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:41:23,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-11-23 14:41:23,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1378. [2022-11-23 14:41:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 850 states have (on average 1.9529411764705882) internal successors, (1660), 1373 states have internal predecessors, (1660), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1666 transitions. [2022-11-23 14:41:23,344 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1666 transitions. Word has length 13 [2022-11-23 14:41:23,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:23,345 INFO L495 AbstractCegarLoop]: Abstraction has 1378 states and 1666 transitions. [2022-11-23 14:41:23,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1666 transitions. [2022-11-23 14:41:23,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 14:41:23,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:23,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:23,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:23,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:23,558 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:23,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:23,558 INFO L85 PathProgramCache]: Analyzing trace with hash -100024073, now seen corresponding path program 1 times [2022-11-23 14:41:23,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:23,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727223129] [2022-11-23 14:41:23,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:23,558 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 [2022-11-23 14:41:23,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:23,559 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:23,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:23,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:41:23,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:23,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:23,753 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:23,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727223129] [2022-11-23 14:41:23,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727223129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:23,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:23,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:41:23,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320397175] [2022-11-23 14:41:23,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:23,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:41:23,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:23,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:41:23,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:41:23,755 INFO L87 Difference]: Start difference. First operand 1378 states and 1666 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:23,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:23,840 INFO L93 Difference]: Finished difference Result 1572 states and 1844 transitions. [2022-11-23 14:41:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:41:23,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-23 14:41:23,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:23,846 INFO L225 Difference]: With dead ends: 1572 [2022-11-23 14:41:23,846 INFO L226 Difference]: Without dead ends: 1572 [2022-11-23 14:41:23,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:41:23,847 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 564 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:23,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 3077 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:41:23,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2022-11-23 14:41:23,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1348. [2022-11-23 14:41:23,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 834 states have (on average 1.920863309352518) internal successors, (1602), 1343 states have internal predecessors, (1602), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:23,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1608 transitions. [2022-11-23 14:41:23,873 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1608 transitions. Word has length 15 [2022-11-23 14:41:23,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:23,874 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 1608 transitions. [2022-11-23 14:41:23,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:23,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1608 transitions. [2022-11-23 14:41:23,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 14:41:23,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:23,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:23,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:24,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:24,086 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr634ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:24,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:24,087 INFO L85 PathProgramCache]: Analyzing trace with hash 314592142, now seen corresponding path program 1 times [2022-11-23 14:41:24,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:24,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323134483] [2022-11-23 14:41:24,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:24,087 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 [2022-11-23 14:41:24,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:24,089 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:24,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:24,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:41:24,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:24,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:41:24,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:41:24,322 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 [2022-11-23 14:41:24,370 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:41:24,371 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 [2022-11-23 14:41:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:24,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:24,410 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:24,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323134483] [2022-11-23 14:41:24,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323134483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:24,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:24,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:41:24,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583257897] [2022-11-23 14:41:24,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:24,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:41:24,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:24,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:41:24,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:41:24,411 INFO L87 Difference]: Start difference. First operand 1348 states and 1608 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:26,152 INFO L93 Difference]: Finished difference Result 1784 states and 2103 transitions. [2022-11-23 14:41:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:41:26,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-23 14:41:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:26,156 INFO L225 Difference]: With dead ends: 1784 [2022-11-23 14:41:26,156 INFO L226 Difference]: Without dead ends: 1784 [2022-11-23 14:41:26,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:41:26,157 INFO L413 NwaCegarLoop]: 1104 mSDtfsCounter, 425 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:26,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 3200 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 14:41:26,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2022-11-23 14:41:26,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1347. [2022-11-23 14:41:26,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 833 states have (on average 1.9207683073229291) internal successors, (1600), 1342 states have internal predecessors, (1600), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1606 transitions. [2022-11-23 14:41:26,183 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1606 transitions. Word has length 16 [2022-11-23 14:41:26,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:26,183 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 1606 transitions. [2022-11-23 14:41:26,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:41:26,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1606 transitions. [2022-11-23 14:41:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 14:41:26,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:26,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:26,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:26,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:26,397 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:26,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:26,397 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-11-23 14:41:26,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:26,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049405782] [2022-11-23 14:41:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:26,398 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 [2022-11-23 14:41:26,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:26,399 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:26,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:26,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:41:26,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:26,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:26,620 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:26,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049405782] [2022-11-23 14:41:26,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049405782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:26,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:26,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:26,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171307076] [2022-11-23 14:41:26,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:26,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:26,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:26,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:26,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:26,622 INFO L87 Difference]: Start difference. First operand 1347 states and 1606 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) [2022-11-23 14:41:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:26,653 INFO L93 Difference]: Finished difference Result 1287 states and 1520 transitions. [2022-11-23 14:41:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:26,654 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 [2022-11-23 14:41:26,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:26,658 INFO L225 Difference]: With dead ends: 1287 [2022-11-23 14:41:26,658 INFO L226 Difference]: Without dead ends: 1287 [2022-11-23 14:41:26,658 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 [2022-11-23 14:41:26,659 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 1085 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 1123 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 [2022-11-23 14:41:26,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 1123 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:41:26,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-11-23 14:41:26,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1287. [2022-11-23 14:41:26,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 797 states have (on average 1.8996235884567128) internal successors, (1514), 1282 states have internal predecessors, (1514), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:26,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1520 transitions. [2022-11-23 14:41:26,682 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1520 transitions. Word has length 18 [2022-11-23 14:41:26,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:26,683 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1520 transitions. [2022-11-23 14:41:26,683 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) [2022-11-23 14:41:26,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1520 transitions. [2022-11-23 14:41:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 14:41:26,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:26,684 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] [2022-11-23 14:41:26,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:26,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:26,885 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:26,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:26,886 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-11-23 14:41:26,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:26,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786179782] [2022-11-23 14:41:26,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:26,886 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 [2022-11-23 14:41:26,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:26,887 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:26,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:27,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:41:27,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:27,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:27,105 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:27,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786179782] [2022-11-23 14:41:27,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786179782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:27,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:27,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:41:27,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793960510] [2022-11-23 14:41:27,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:27,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:41:27,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:27,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:41:27,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:41:27,108 INFO L87 Difference]: Start difference. First operand 1287 states and 1520 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) [2022-11-23 14:41:27,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:27,182 INFO L93 Difference]: Finished difference Result 1259 states and 1464 transitions. [2022-11-23 14:41:27,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:41:27,183 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 [2022-11-23 14:41:27,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:27,187 INFO L225 Difference]: With dead ends: 1259 [2022-11-23 14:41:27,187 INFO L226 Difference]: Without dead ends: 1259 [2022-11-23 14:41:27,187 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 [2022-11-23 14:41:27,188 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 1066 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:27,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 2127 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:41:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-11-23 14:41:27,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1257. [2022-11-23 14:41:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 781 states have (on average 1.8642765685019207) internal successors, (1456), 1252 states have internal predecessors, (1456), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1462 transitions. [2022-11-23 14:41:27,215 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1462 transitions. Word has length 20 [2022-11-23 14:41:27,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:27,216 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1462 transitions. [2022-11-23 14:41:27,216 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) [2022-11-23 14:41:27,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1462 transitions. [2022-11-23 14:41:27,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 14:41:27,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:27,218 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] [2022-11-23 14:41:27,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:27,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:27,430 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:27,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:27,431 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-11-23 14:41:27,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:27,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887798686] [2022-11-23 14:41:27,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:27,431 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 [2022-11-23 14:41:27,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:27,432 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:27,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:27,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:41:27,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:27,619 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 [2022-11-23 14:41:27,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:27,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:27,712 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:27,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887798686] [2022-11-23 14:41:27,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887798686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:27,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:27,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:27,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354006806] [2022-11-23 14:41:27,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:27,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:41:27,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:27,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:41:27,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:41:27,715 INFO L87 Difference]: Start difference. First operand 1257 states and 1462 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) [2022-11-23 14:41:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:30,617 INFO L93 Difference]: Finished difference Result 1837 states and 2165 transitions. [2022-11-23 14:41:30,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:41:30,618 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 [2022-11-23 14:41:30,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:30,622 INFO L225 Difference]: With dead ends: 1837 [2022-11-23 14:41:30,622 INFO L226 Difference]: Without dead ends: 1837 [2022-11-23 14:41:30,623 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 [2022-11-23 14:41:30,623 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 1710 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:30,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 1215 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 14:41:30,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2022-11-23 14:41:30,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1253. [2022-11-23 14:41:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 781 states have (on average 1.854033290653009) internal successors, (1448), 1248 states have internal predecessors, (1448), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1454 transitions. [2022-11-23 14:41:30,657 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1454 transitions. Word has length 34 [2022-11-23 14:41:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:30,657 INFO L495 AbstractCegarLoop]: Abstraction has 1253 states and 1454 transitions. [2022-11-23 14:41:30,657 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) [2022-11-23 14:41:30,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1454 transitions. [2022-11-23 14:41:30,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 14:41:30,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:30,658 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] [2022-11-23 14:41:30,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:30,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:30,871 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:30,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:30,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-11-23 14:41:30,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:30,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912397081] [2022-11-23 14:41:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:30,873 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 [2022-11-23 14:41:30,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:30,874 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:30,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:31,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:41:31,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:31,100 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 [2022-11-23 14:41:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:31,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:31,299 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:31,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912397081] [2022-11-23 14:41:31,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912397081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:31,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:31,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:31,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531499598] [2022-11-23 14:41:31,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:31,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:41:31,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:31,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:41:31,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:41:31,300 INFO L87 Difference]: Start difference. First operand 1253 states and 1454 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) [2022-11-23 14:41:35,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:35,927 INFO L93 Difference]: Finished difference Result 1967 states and 2274 transitions. [2022-11-23 14:41:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:41:35,928 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 [2022-11-23 14:41:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:35,932 INFO L225 Difference]: With dead ends: 1967 [2022-11-23 14:41:35,932 INFO L226 Difference]: Without dead ends: 1967 [2022-11-23 14:41:35,932 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 [2022-11-23 14:41:35,933 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 1212 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 2453 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:35,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 2453 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-23 14:41:35,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2022-11-23 14:41:35,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1249. [2022-11-23 14:41:35,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 781 states have (on average 1.8437900128040974) internal successors, (1440), 1244 states have internal predecessors, (1440), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:35,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1446 transitions. [2022-11-23 14:41:35,964 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1446 transitions. Word has length 34 [2022-11-23 14:41:35,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:35,964 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 1446 transitions. [2022-11-23 14:41:35,964 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) [2022-11-23 14:41:35,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1446 transitions. [2022-11-23 14:41:35,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 14:41:35,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:35,966 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] [2022-11-23 14:41:35,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:36,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:36,178 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:36,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:36,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-11-23 14:41:36,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:36,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394994440] [2022-11-23 14:41:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:36,180 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 [2022-11-23 14:41:36,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:36,181 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:36,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:36,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:41:36,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:36,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:36,513 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:36,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394994440] [2022-11-23 14:41:36,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394994440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:36,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:36,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:41:36,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49553578] [2022-11-23 14:41:36,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:36,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:41:36,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:36,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:41:36,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:41:36,515 INFO L87 Difference]: Start difference. First operand 1249 states and 1446 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-23 14:41:36,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:36,566 INFO L93 Difference]: Finished difference Result 1237 states and 1426 transitions. [2022-11-23 14:41:36,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:41:36,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2022-11-23 14:41:36,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:36,571 INFO L225 Difference]: With dead ends: 1237 [2022-11-23 14:41:36,571 INFO L226 Difference]: Without dead ends: 1237 [2022-11-23 14:41:36,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:41:36,572 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 1035 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 2105 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 [2022-11-23 14:41:36,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 2105 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:41:36,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-11-23 14:41:36,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1237. [2022-11-23 14:41:36,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 769 states have (on average 1.846553966189857) internal successors, (1420), 1232 states have internal predecessors, (1420), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:36,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1426 transitions. [2022-11-23 14:41:36,590 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1426 transitions. Word has length 52 [2022-11-23 14:41:36,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:36,591 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 1426 transitions. [2022-11-23 14:41:36,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-23 14:41:36,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1426 transitions. [2022-11-23 14:41:36,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-23 14:41:36,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:36,592 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] [2022-11-23 14:41:36,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:36,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:36,806 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:36,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:36,806 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-11-23 14:41:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:36,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562588875] [2022-11-23 14:41:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:36,807 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 [2022-11-23 14:41:36,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:36,808 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:36,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:37,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 14:41:37,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:37,202 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 [2022-11-23 14:41:37,210 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 [2022-11-23 14:41:37,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:41:37,770 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 [2022-11-23 14:41:37,788 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 14:41:37,788 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 [2022-11-23 14:41:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:37,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:37,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:37,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562588875] [2022-11-23 14:41:37,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562588875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:37,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:37,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:37,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094477288] [2022-11-23 14:41:37,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:37,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:41:37,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:37,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:41:37,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:41:37,805 INFO L87 Difference]: Start difference. First operand 1237 states and 1426 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) [2022-11-23 14:41:41,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:41,275 INFO L93 Difference]: Finished difference Result 1585 states and 1891 transitions. [2022-11-23 14:41:41,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:41:41,277 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 [2022-11-23 14:41:41,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:41,282 INFO L225 Difference]: With dead ends: 1585 [2022-11-23 14:41:41,282 INFO L226 Difference]: Without dead ends: 1585 [2022-11-23 14:41:41,283 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 [2022-11-23 14:41:41,283 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 1108 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:41,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 787 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-23 14:41:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2022-11-23 14:41:41,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1167. [2022-11-23 14:41:41,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 737 states have (on average 1.78561736770692) internal successors, (1316), 1162 states have internal predecessors, (1316), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1322 transitions. [2022-11-23 14:41:41,301 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1322 transitions. Word has length 60 [2022-11-23 14:41:41,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:41,302 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1322 transitions. [2022-11-23 14:41:41,302 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) [2022-11-23 14:41:41,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1322 transitions. [2022-11-23 14:41:41,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 14:41:41,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:41,303 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] [2022-11-23 14:41:41,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:41,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:41,517 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:41,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:41,518 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-11-23 14:41:41,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:41,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107619163] [2022-11-23 14:41:41,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:41,518 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 [2022-11-23 14:41:41,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:41,519 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:41,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:41,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:41:41,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:41,890 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 [2022-11-23 14:41:41,910 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 [2022-11-23 14:41:41,947 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 [2022-11-23 14:41:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:41,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:41,963 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:41,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107619163] [2022-11-23 14:41:41,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107619163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:41,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:41,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:41:41,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171677345] [2022-11-23 14:41:41,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:41,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:41:41,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:41,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:41:41,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:41:41,966 INFO L87 Difference]: Start difference. First operand 1167 states and 1322 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) [2022-11-23 14:41:45,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:45,202 INFO L93 Difference]: Finished difference Result 1166 states and 1321 transitions. [2022-11-23 14:41:45,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:41:45,203 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 [2022-11-23 14:41:45,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:45,207 INFO L225 Difference]: With dead ends: 1166 [2022-11-23 14:41:45,207 INFO L226 Difference]: Without dead ends: 1166 [2022-11-23 14:41:45,207 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 [2022-11-23 14:41:45,209 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 4 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:45,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2556 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-23 14:41:45,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-11-23 14:41:45,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2022-11-23 14:41:45,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 737 states have (on average 1.7842605156037992) internal successors, (1315), 1161 states have internal predecessors, (1315), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:45,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1321 transitions. [2022-11-23 14:41:45,224 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1321 transitions. Word has length 65 [2022-11-23 14:41:45,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:45,225 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 1321 transitions. [2022-11-23 14:41:45,225 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) [2022-11-23 14:41:45,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1321 transitions. [2022-11-23 14:41:45,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 14:41:45,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:45,226 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] [2022-11-23 14:41:45,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:45,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:45,441 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:45,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:45,441 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-11-23 14:41:45,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:45,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913459296] [2022-11-23 14:41:45,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:45,442 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 [2022-11-23 14:41:45,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:45,443 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:45,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:45,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 14:41:45,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:45,812 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 [2022-11-23 14:41:45,831 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 [2022-11-23 14:41:45,841 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 [2022-11-23 14:41:45,896 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 [2022-11-23 14:41:45,903 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 [2022-11-23 14:41:45,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:45,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:45,921 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:45,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913459296] [2022-11-23 14:41:45,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913459296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:45,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:45,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:41:45,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875298177] [2022-11-23 14:41:45,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:45,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:41:45,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:45,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:41:45,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:41:45,923 INFO L87 Difference]: Start difference. First operand 1166 states and 1321 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) [2022-11-23 14:41:50,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:50,227 INFO L93 Difference]: Finished difference Result 1165 states and 1320 transitions. [2022-11-23 14:41:50,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:41:50,228 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 [2022-11-23 14:41:50,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:50,232 INFO L225 Difference]: With dead ends: 1165 [2022-11-23 14:41:50,232 INFO L226 Difference]: Without dead ends: 1165 [2022-11-23 14:41:50,232 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 [2022-11-23 14:41:50,233 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 2 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:50,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2613 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-23 14:41:50,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-11-23 14:41:50,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2022-11-23 14:41:50,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 736 states have (on average 1.7853260869565217) internal successors, (1314), 1160 states have internal predecessors, (1314), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:41:50,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1320 transitions. [2022-11-23 14:41:50,250 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1320 transitions. Word has length 65 [2022-11-23 14:41:50,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:50,250 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1320 transitions. [2022-11-23 14:41:50,251 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) [2022-11-23 14:41:50,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1320 transitions. [2022-11-23 14:41:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 14:41:50,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:50,252 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] [2022-11-23 14:41:50,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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 [2022-11-23 14:41:50,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:50,467 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:50,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:50,467 INFO L85 PathProgramCache]: Analyzing trace with hash -951740241, now seen corresponding path program 1 times [2022-11-23 14:41:50,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:50,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015839724] [2022-11-23 14:41:50,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:50,468 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 [2022-11-23 14:41:50,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:50,469 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:50,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-23 14:41:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:50,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:41:50,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:50,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:41:50,839 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:50,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015839724] [2022-11-23 14:41:50,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015839724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:50,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:50,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:41:50,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942402375] [2022-11-23 14:41:50,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:50,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:41:50,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:50,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:41:50,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:41:50,845 INFO L87 Difference]: Start difference. First operand 1165 states and 1320 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) [2022-11-23 14:41:50,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:50,903 INFO L93 Difference]: Finished difference Result 1168 states and 1324 transitions. [2022-11-23 14:41:50,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:41:50,904 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 [2022-11-23 14:41:50,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:50,919 INFO L225 Difference]: With dead ends: 1168 [2022-11-23 14:41:50,919 INFO L226 Difference]: Without dead ends: 1168 [2022-11-23 14:41:50,919 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 [2022-11-23 14:41:50,920 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 2 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3025 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 [2022-11-23 14:41:50,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3025 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:41:50,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-11-23 14:41:50,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1168. [2022-11-23 14:41:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 738 states have (on average 1.7845528455284554) internal successors, (1317), 1163 states have internal predecessors, (1317), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 14:41:50,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1324 transitions. [2022-11-23 14:41:50,952 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1324 transitions. Word has length 73 [2022-11-23 14:41:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:50,953 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 1324 transitions. [2022-11-23 14:41:50,953 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) [2022-11-23 14:41:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1324 transitions. [2022-11-23 14:41:50,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 14:41:50,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:50,955 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] [2022-11-23 14:41:50,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-11-23 14:41:51,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:41:51,173 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:51,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:51,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1324394752, now seen corresponding path program 1 times [2022-11-23 14:41:51,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:51,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157606203] [2022-11-23 14:41:51,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:51,174 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 [2022-11-23 14:41:51,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:51,175 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:51,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-23 14:41:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:51,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:41:51,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:51,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:41:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:51,663 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:51,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157606203] [2022-11-23 14:41:51,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157606203] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:41:51,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1243943475] [2022-11-23 14:41:51,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:51,664 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:41:51,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:41:51,670 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:41:51,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-23 14:41:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:52,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:41:52,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:52,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:41:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:52,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1243943475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:41:52,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854720025] [2022-11-23 14:41:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:52,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:41:52,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:41:52,334 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:41:52,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-23 14:41:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:52,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:41:52,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:52,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:41:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:52,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854720025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:41:52,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:41:52,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-23 14:41:52,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842846398] [2022-11-23 14:41:52,757 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:41:52,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:41:52,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:41:52,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:41:52,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:41:52,759 INFO L87 Difference]: Start difference. First operand 1168 states and 1324 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) [2022-11-23 14:41:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:52,984 INFO L93 Difference]: Finished difference Result 1180 states and 1341 transitions. [2022-11-23 14:41:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:41:52,985 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 [2022-11-23 14:41:52,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:53,000 INFO L225 Difference]: With dead ends: 1180 [2022-11-23 14:41:53,000 INFO L226 Difference]: Without dead ends: 1180 [2022-11-23 14:41:53,001 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 [2022-11-23 14:41:53,001 INFO L413 NwaCegarLoop]: 1011 mSDtfsCounter, 19 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4034 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:53,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4034 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:41:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-11-23 14:41:53,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1178. [2022-11-23 14:41:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 747 states have (on average 1.783132530120482) internal successors, (1332), 1172 states have internal predecessors, (1332), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 14:41:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1339 transitions. [2022-11-23 14:41:53,023 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1339 transitions. Word has length 74 [2022-11-23 14:41:53,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:53,023 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1339 transitions. [2022-11-23 14:41:53,024 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) [2022-11-23 14:41:53,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1339 transitions. [2022-11-23 14:41:53,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 14:41:53,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:53,030 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] [2022-11-23 14:41:53,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:53,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:53,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-23 14:41:53,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 14:41:53,641 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:41:53,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:53,642 INFO L85 PathProgramCache]: Analyzing trace with hash -508582673, now seen corresponding path program 2 times [2022-11-23 14:41:53,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:41:53,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21167524] [2022-11-23 14:41:53,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:41:53,642 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 [2022-11-23 14:41:53,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:41:53,643 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:41:53,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-23 14:41:54,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:41:54,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:41:54,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:41:54,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:54,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:54,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:41:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:54,488 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:41:54,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21167524] [2022-11-23 14:41:54,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21167524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:41:54,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [439858179] [2022-11-23 14:41:54,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:41:54,489 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:41:54,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:41:54,490 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:41:54,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-23 14:41:56,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:41:56,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:41:56,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:41:56,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:41:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:56,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:41:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:41:56,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [439858179] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:41:56,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003959249] [2022-11-23 14:41:56,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:41:56,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:41:56,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:41:56,323 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:41:56,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-23 14:42:12,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:42:12,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:42:12,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-23 14:42:12,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:42:13,095 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 14:42:13,096 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 [2022-11-23 14:42:13,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:42:13,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:42:13,179 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 [2022-11-23 14:42:13,377 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 22 treesize of output 10 [2022-11-23 14:42:13,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-23 14:42:13,481 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1651 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1651) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1650 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1650) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-23 14:42:13,497 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1652 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1652))) (exists ((v_ArrVal_1653 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1653) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-23 14:42:13,512 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1654 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1654))) (exists ((v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1655))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-23 14:42:13,545 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-23 14:42:13,623 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:42:13,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-23 14:42:13,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-23 14:42:13,726 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 31 treesize of output 13 [2022-11-23 14:42:13,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-23 14:42:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-23 14:42:13,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:42:14,142 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1668 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1668) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_1669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1668 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1668) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-23 14:42:14,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003959249] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:42:14,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-23 14:42:14,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-11-23 14:42:14,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741804546] [2022-11-23 14:42:14,153 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-23 14:42:14,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 14:42:14,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:42:14,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 14:42:14,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=428, Unknown=5, NotChecked=230, Total=756 [2022-11-23 14:42:14,154 INFO L87 Difference]: Start difference. First operand 1178 states and 1339 transitions. Second operand has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:42:30,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:30,175 INFO L93 Difference]: Finished difference Result 1587 states and 1871 transitions. [2022-11-23 14:42:30,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-23 14:42:30,178 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2022-11-23 14:42:30,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:30,183 INFO L225 Difference]: With dead ends: 1587 [2022-11-23 14:42:30,183 INFO L226 Difference]: Without dead ends: 1581 [2022-11-23 14:42:30,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=421, Invalid=1937, Unknown=14, NotChecked=490, Total=2862 [2022-11-23 14:42:30,184 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 1882 mSDsluCounter, 6262 mSDsCounter, 0 mSdLazyCounter, 6531 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 6907 SdHoareTripleChecker+Invalid, 12038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 6531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5449 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:30,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1882 Valid, 6907 Invalid, 12038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 6531 Invalid, 0 Unknown, 5449 Unchecked, 14.5s Time] [2022-11-23 14:42:30,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2022-11-23 14:42:30,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1187. [2022-11-23 14:42:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 756 states have (on average 1.7764550264550265) internal successors, (1343), 1181 states have internal predecessors, (1343), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 14:42:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1350 transitions. [2022-11-23 14:42:30,207 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1350 transitions. Word has length 77 [2022-11-23 14:42:30,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:30,208 INFO L495 AbstractCegarLoop]: Abstraction has 1187 states and 1350 transitions. [2022-11-23 14:42:30,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:42:30,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1350 transitions. [2022-11-23 14:42:30,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-23 14:42:30,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:30,209 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] [2022-11-23 14:42:30,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-11-23 14:42:30,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-23 14:42:30,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-23 14:42:30,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:42:30,818 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 632 more)] === [2022-11-23 14:42:30,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:30,818 INFO L85 PathProgramCache]: Analyzing trace with hash 201292623, now seen corresponding path program 3 times [2022-11-23 14:42:30,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:42:30,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071809716] [2022-11-23 14:42:30,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:42:30,819 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 [2022-11-23 14:42:30,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:42:30,820 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -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) [2022-11-23 14:42:30,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-23 14:42:31,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-23 14:42:31,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:42:31,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 14:42:31,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:42:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:42:31,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:42:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:42:32,749 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:42:32,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071809716] [2022-11-23 14:42:32,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071809716] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:42:32,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1436466412] [2022-11-23 14:42:32,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:42:32,750 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:42:32,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:42:32,752 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:42:32,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-23 14:42:37,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-23 14:42:37,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:42:37,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 14:42:37,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:42:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:42:37,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:42:38,262 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:42:38,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1436466412] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:42:38,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853984198] [2022-11-23 14:42:38,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:42:38,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:42:38,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:42:38,265 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:42:38,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_facc87b3-664d-482d-a716-a9690ece3725/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process