./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85b77735b82f790dcf6393a6fb65098490b7c65f26539a1354e286eeb25926e8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:30:14,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:30:14,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:30:14,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:30:14,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:30:14,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:30:14,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:30:14,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:30:14,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:30:14,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:30:14,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:30:14,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:30:14,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:30:14,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:30:14,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:30:14,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:30:14,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:30:14,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:30:14,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:30:14,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:30:14,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:30:14,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:30:14,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:30:14,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:30:14,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:30:14,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:30:14,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:30:14,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:30:14,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:30:14,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:30:14,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:30:14,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:30:14,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:30:14,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:30:14,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:30:14,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:30:14,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:30:14,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:30:14,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:30:14,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:30:14,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:30:14,855 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:30:14,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:30:14,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:30:14,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:30:14,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:30:14,900 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:30:14,901 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:30:14,901 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:30:14,901 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:30:14,908 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:30:14,908 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:30:14,909 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:30:14,909 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:30:14,910 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:30:14,910 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:30:14,910 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:30:14,911 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:30:14,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:30:14,912 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:30:14,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:30:14,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:30:14,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:30:14,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:30:14,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:30:14,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:30:14,914 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:30:14,914 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:30:14,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:30:14,915 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:30:14,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:30:14,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:30:14,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:30:14,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:30:14,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:30:14,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:30:14,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:30:14,918 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:30:14,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:30:14,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:30:14,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:30:14,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:30:14,920 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b77735b82f790dcf6393a6fb65098490b7c65f26539a1354e286eeb25926e8 [2021-11-12 22:30:15,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:30:15,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:30:15,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:30:15,251 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:30:15,252 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:30:15,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c [2021-11-12 22:30:15,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/data/2c3251d96/16806d81ae174edf9b415e267c348a25/FLAGcf603c470 [2021-11-12 22:30:15,962 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:30:15,963 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c [2021-11-12 22:30:15,994 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/data/2c3251d96/16806d81ae174edf9b415e267c348a25/FLAGcf603c470 [2021-11-12 22:30:16,176 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/data/2c3251d96/16806d81ae174edf9b415e267c348a25 [2021-11-12 22:30:16,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:30:16,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:30:16,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:30:16,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:30:16,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:30:16,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:30:16" (1/1) ... [2021-11-12 22:30:16,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ade3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:16, skipping insertion in model container [2021-11-12 22:30:16,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:30:16" (1/1) ... [2021-11-12 22:30:16,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:30:16,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:30:16,721 WARN L228 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_68341e3b-2f1b-4ace-941a-72ddb9134119/sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c[77660,77673] [2021-11-12 22:30:16,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:30:16,746 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:30:16,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78d72e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:16, skipping insertion in model container [2021-11-12 22:30:16,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:30:16,747 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:30:16,749 INFO L158 Benchmark]: Toolchain (without parser) took 567.87ms. Allocated memory is still 94.4MB. Free memory was 57.8MB in the beginning and 59.4MB in the end (delta: -1.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:30:16,750 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 94.4MB. Free memory was 64.5MB in the beginning and 64.5MB in the end (delta: 21.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:30:16,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 565.42ms. Allocated memory is still 94.4MB. Free memory was 57.6MB in the beginning and 59.4MB in the end (delta: -1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:30:16,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 94.4MB. Free memory was 64.5MB in the beginning and 64.5MB in the end (delta: 21.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 565.42ms. Allocated memory is still 94.4MB. Free memory was 57.6MB in the beginning and 59.4MB in the end (delta: -1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85b77735b82f790dcf6393a6fb65098490b7c65f26539a1354e286eeb25926e8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:30:19,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:30:19,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:30:19,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:30:19,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:30:19,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:30:19,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:30:19,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:30:19,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:30:19,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:30:19,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:30:19,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:30:19,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:30:19,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:30:19,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:30:19,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:30:19,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:30:19,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:30:19,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:30:19,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:30:19,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:30:19,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:30:19,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:30:19,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:30:19,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:30:19,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:30:19,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:30:19,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:30:19,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:30:19,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:30:19,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:30:19,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:30:19,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:30:19,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:30:19,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:30:19,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:30:19,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:30:19,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:30:19,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:30:19,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:30:19,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:30:19,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:30:19,322 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:30:19,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:30:19,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:30:19,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:30:19,324 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:30:19,324 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:30:19,325 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:30:19,325 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:30:19,325 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:30:19,325 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:30:19,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:30:19,328 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:30:19,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:30:19,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:30:19,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:30:19,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:30:19,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:30:19,329 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:30:19,329 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:30:19,330 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:30:19,330 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:30:19,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:30:19,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:30:19,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:30:19,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:30:19,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:30:19,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:30:19,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:30:19,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:30:19,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:30:19,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:30:19,332 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:30:19,332 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:30:19,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:30:19,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:30:19,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:30:19,334 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_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b77735b82f790dcf6393a6fb65098490b7c65f26539a1354e286eeb25926e8 [2021-11-12 22:30:19,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:30:19,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:30:19,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:30:19,759 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:30:19,761 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:30:19,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c [2021-11-12 22:30:19,838 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/data/f188c3798/81e2ace2b3f24375baf643dfc4d270ed/FLAG34b68b4e9 [2021-11-12 22:30:20,606 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:30:20,607 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c [2021-11-12 22:30:20,632 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/data/f188c3798/81e2ace2b3f24375baf643dfc4d270ed/FLAG34b68b4e9 [2021-11-12 22:30:20,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/data/f188c3798/81e2ace2b3f24375baf643dfc4d270ed [2021-11-12 22:30:20,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:30:20,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:30:20,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:30:20,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:30:20,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:30:20,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:30:20" (1/1) ... [2021-11-12 22:30:20,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@774e8418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:20, skipping insertion in model container [2021-11-12 22:30:20,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:30:20" (1/1) ... [2021-11-12 22:30:20,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:30:20,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:30:21,430 WARN L228 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_68341e3b-2f1b-4ace-941a-72ddb9134119/sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c[77660,77673] [2021-11-12 22:30:21,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:30:21,461 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:30:21,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:30:21,610 WARN L228 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_68341e3b-2f1b-4ace-941a-72ddb9134119/sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c[77660,77673] [2021-11-12 22:30:21,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:30:21,625 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:30:21,768 WARN L228 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_68341e3b-2f1b-4ace-941a-72ddb9134119/sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c[77660,77673] [2021-11-12 22:30:21,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:30:21,801 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:30:21,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21 WrapperNode [2021-11-12 22:30:21,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:30:21,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:30:21,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:30:21,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:30:21,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:30:21,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:30:21,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:30:21,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:30:21,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:21,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:22,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:22,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:22,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:22,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:30:22,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:30:22,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:30:22,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:30:22,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (1/1) ... [2021-11-12 22:30:22,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:30:22,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:30:22,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:30:22,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:30:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:30:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:30:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:30:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:30:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:30:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:30:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:30:22,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:30:22,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:30:22,493 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 22:30:32,099 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-12 22:30:32,099 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-12 22:30:32,109 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:30:32,110 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:30:32,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:30:32 BoogieIcfgContainer [2021-11-12 22:30:32,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:30:32,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:30:32,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:30:32,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:30:32,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:30:20" (1/3) ... [2021-11-12 22:30:32,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e87d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:30:32, skipping insertion in model container [2021-11-12 22:30:32,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:30:21" (2/3) ... [2021-11-12 22:30:32,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e87d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:30:32, skipping insertion in model container [2021-11-12 22:30:32,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:30:32" (3/3) ... [2021-11-12 22:30:32,122 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.16.i.cil-2.c [2021-11-12 22:30:32,128 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:30:32,128 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:30:32,183 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:30:32,190 INFO L339 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:30:32,191 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:30:32,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 157 states have (on average 1.732484076433121) internal successors, (272), 158 states have internal predecessors, (272), 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) [2021-11-12 22:30:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-12 22:30:32,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:32,223 INFO L514 BasicCegarLoop]: 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] [2021-11-12 22:30:32,224 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:32,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:32,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2069453347, now seen corresponding path program 1 times [2021-11-12 22:30:32,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:32,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418885156] [2021-11-12 22:30:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:32,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:32,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:32,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:32,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:30:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:32,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:30:32,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:32,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:33,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:33,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418885156] [2021-11-12 22:30:33,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418885156] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:33,243 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:33,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:30:33,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774491585] [2021-11-12 22:30:33,251 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:33,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:30:33,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:33,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:30:33,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:33,298 INFO L87 Difference]: Start difference. First operand has 159 states, 157 states have (on average 1.732484076433121) internal successors, (272), 158 states have internal predecessors, (272), 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) Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-11-12 22:30:33,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:33,688 INFO L93 Difference]: Finished difference Result 598 states and 1032 transitions. [2021-11-12 22:30:33,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:30:33,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 46 [2021-11-12 22:30:33,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:33,709 INFO L225 Difference]: With dead ends: 598 [2021-11-12 22:30:33,709 INFO L226 Difference]: Without dead ends: 410 [2021-11-12 22:30:33,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:33,718 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 400 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 216.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.23ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 277.65ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:33,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 667 Invalid, 149 Unknown, 0 Unchecked, 12.23ms Time], IncrementalHoareTripleChecker [54 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 277.65ms Time] [2021-11-12 22:30:33,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-12 22:30:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-11-12 22:30:33,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.5378973105134475) internal successors, (629), 409 states have internal predecessors, (629), 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) [2021-11-12 22:30:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 629 transitions. [2021-11-12 22:30:33,788 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 629 transitions. Word has length 46 [2021-11-12 22:30:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:33,789 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 629 transitions. [2021-11-12 22:30:33,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-11-12 22:30:33,789 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 629 transitions. [2021-11-12 22:30:33,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-12 22:30:33,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:33,797 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:33,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:34,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:34,020 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:34,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:34,021 INFO L85 PathProgramCache]: Analyzing trace with hash -204372774, now seen corresponding path program 1 times [2021-11-12 22:30:34,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:34,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653913130] [2021-11-12 22:30:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:34,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:34,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:34,030 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:34,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:30:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:34,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:30:34,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:34,793 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:34,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:35,240 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:30:35,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:35,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653913130] [2021-11-12 22:30:35,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653913130] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:35,242 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:35,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:30:35,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800943129] [2021-11-12 22:30:35,243 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:35,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:30:35,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:35,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:30:35,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:35,246 INFO L87 Difference]: Start difference. First operand 410 states and 629 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2021-11-12 22:30:35,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:35,948 INFO L93 Difference]: Finished difference Result 939 states and 1467 transitions. [2021-11-12 22:30:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:30:35,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 108 [2021-11-12 22:30:35,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:35,955 INFO L225 Difference]: With dead ends: 939 [2021-11-12 22:30:35,956 INFO L226 Difference]: Without dead ends: 672 [2021-11-12 22:30:35,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:35,962 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 310 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 584.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.03ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 656.37ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:35,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 725 Invalid, 162 Unknown, 0 Unchecked, 5.03ms Time], IncrementalHoareTripleChecker [51 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 656.37ms Time] [2021-11-12 22:30:35,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-11-12 22:30:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2021-11-12 22:30:36,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 1.527570789865872) internal successors, (1025), 671 states have internal predecessors, (1025), 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) [2021-11-12 22:30:36,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1025 transitions. [2021-11-12 22:30:36,031 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1025 transitions. Word has length 108 [2021-11-12 22:30:36,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:36,032 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 1025 transitions. [2021-11-12 22:30:36,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2021-11-12 22:30:36,033 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1025 transitions. [2021-11-12 22:30:36,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-12 22:30:36,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:36,047 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:36,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:36,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:36,256 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:36,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:36,256 INFO L85 PathProgramCache]: Analyzing trace with hash -575897374, now seen corresponding path program 1 times [2021-11-12 22:30:36,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:36,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758052454] [2021-11-12 22:30:36,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:36,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:36,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:36,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:36,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:30:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:36,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:30:36,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 22:30:37,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 22:30:37,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:37,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758052454] [2021-11-12 22:30:37,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758052454] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:37,843 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:37,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:30:37,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184611047] [2021-11-12 22:30:37,844 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:37,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:30:37,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:37,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:30:37,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:37,846 INFO L87 Difference]: Start difference. First operand 672 states and 1025 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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) [2021-11-12 22:30:38,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:38,599 INFO L93 Difference]: Finished difference Result 1466 states and 2262 transitions. [2021-11-12 22:30:38,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:30:38,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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 173 [2021-11-12 22:30:38,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:38,609 INFO L225 Difference]: With dead ends: 1466 [2021-11-12 22:30:38,612 INFO L226 Difference]: Without dead ends: 937 [2021-11-12 22:30:38,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:38,622 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 311 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 636.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.51ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 692.87ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:38,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 731 Invalid, 161 Unknown, 0 Unchecked, 4.51ms Time], IncrementalHoareTripleChecker [49 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 692.87ms Time] [2021-11-12 22:30:38,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-11-12 22:30:38,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2021-11-12 22:30:38,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 1.5213675213675213) internal successors, (1424), 936 states have internal predecessors, (1424), 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) [2021-11-12 22:30:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1424 transitions. [2021-11-12 22:30:38,682 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1424 transitions. Word has length 173 [2021-11-12 22:30:38,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:38,688 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1424 transitions. [2021-11-12 22:30:38,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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) [2021-11-12 22:30:38,690 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1424 transitions. [2021-11-12 22:30:38,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-12 22:30:38,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:38,699 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:38,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:38,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:38,902 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:38,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:38,903 INFO L85 PathProgramCache]: Analyzing trace with hash -234376531, now seen corresponding path program 1 times [2021-11-12 22:30:38,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:38,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30139064] [2021-11-12 22:30:38,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:38,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:38,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:38,907 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:38,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:30:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:39,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:30:39,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-12 22:30:40,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-12 22:30:40,785 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:40,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30139064] [2021-11-12 22:30:40,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30139064] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:40,785 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:40,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:30:40,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553913824] [2021-11-12 22:30:40,786 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:40,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:30:40,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:40,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:30:40,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:40,788 INFO L87 Difference]: Start difference. First operand 937 states and 1424 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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) [2021-11-12 22:30:41,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:41,796 INFO L93 Difference]: Finished difference Result 1994 states and 3055 transitions. [2021-11-12 22:30:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:30:41,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 238 [2021-11-12 22:30:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:41,810 INFO L225 Difference]: With dead ends: 1994 [2021-11-12 22:30:41,810 INFO L226 Difference]: Without dead ends: 1200 [2021-11-12 22:30:41,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:41,815 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 319 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 900.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.54ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 941.92ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:41,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 729 Invalid, 158 Unknown, 0 Unchecked, 4.54ms Time], IncrementalHoareTripleChecker [47 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 941.92ms Time] [2021-11-12 22:30:41,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2021-11-12 22:30:41,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1200. [2021-11-12 22:30:41,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 1199 states have (on average 1.5162635529608006) internal successors, (1818), 1199 states have internal predecessors, (1818), 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) [2021-11-12 22:30:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1818 transitions. [2021-11-12 22:30:41,874 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1818 transitions. Word has length 238 [2021-11-12 22:30:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:41,876 INFO L470 AbstractCegarLoop]: Abstraction has 1200 states and 1818 transitions. [2021-11-12 22:30:41,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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) [2021-11-12 22:30:41,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1818 transitions. [2021-11-12 22:30:41,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-11-12 22:30:41,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:41,889 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:41,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:42,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:42,102 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:42,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:42,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1442995500, now seen corresponding path program 1 times [2021-11-12 22:30:42,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:42,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980470184] [2021-11-12 22:30:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:42,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:42,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:42,113 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:42,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:30:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:42,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:30:42,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 485 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-11-12 22:30:43,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 485 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-11-12 22:30:44,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:44,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980470184] [2021-11-12 22:30:44,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980470184] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:44,435 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:44,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:30:44,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639158201] [2021-11-12 22:30:44,436 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:44,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:30:44,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:44,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:30:44,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:44,438 INFO L87 Difference]: Start difference. First operand 1200 states and 1818 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2021-11-12 22:30:45,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:45,226 INFO L93 Difference]: Finished difference Result 2520 states and 3841 transitions. [2021-11-12 22:30:45,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:30:45,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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 311 [2021-11-12 22:30:45,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:45,240 INFO L225 Difference]: With dead ends: 2520 [2021-11-12 22:30:45,240 INFO L226 Difference]: Without dead ends: 1463 [2021-11-12 22:30:45,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:45,243 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 313 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 673.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.19ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 714.50ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:45,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 729 Invalid, 156 Unknown, 0 Unchecked, 4.19ms Time], IncrementalHoareTripleChecker [45 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 714.50ms Time] [2021-11-12 22:30:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2021-11-12 22:30:45,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1463. [2021-11-12 22:30:45,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1462 states have (on average 1.5116279069767442) internal successors, (2210), 1462 states have internal predecessors, (2210), 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) [2021-11-12 22:30:45,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2210 transitions. [2021-11-12 22:30:45,334 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2210 transitions. Word has length 311 [2021-11-12 22:30:45,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:45,335 INFO L470 AbstractCegarLoop]: Abstraction has 1463 states and 2210 transitions. [2021-11-12 22:30:45,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2021-11-12 22:30:45,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2210 transitions. [2021-11-12 22:30:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-11-12 22:30:45,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:45,346 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:45,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:45,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:45,567 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:45,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:45,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1296017864, now seen corresponding path program 1 times [2021-11-12 22:30:45,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:45,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848944210] [2021-11-12 22:30:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:45,570 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:45,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:45,571 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:45,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:30:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:46,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:30:46,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 726 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2021-11-12 22:30:47,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 726 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2021-11-12 22:30:47,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:47,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848944210] [2021-11-12 22:30:47,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848944210] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:47,950 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:47,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:30:47,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777931915] [2021-11-12 22:30:47,951 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:47,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:30:47,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:47,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:30:47,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:47,953 INFO L87 Difference]: Start difference. First operand 1463 states and 2210 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2021-11-12 22:30:49,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:49,276 INFO L93 Difference]: Finished difference Result 3044 states and 4620 transitions. [2021-11-12 22:30:49,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:30:49,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 384 [2021-11-12 22:30:49,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:49,290 INFO L225 Difference]: With dead ends: 3044 [2021-11-12 22:30:49,290 INFO L226 Difference]: Without dead ends: 1724 [2021-11-12 22:30:49,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:49,293 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 313 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1193.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.22ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1236.10ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:49,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 728 Invalid, 152 Unknown, 0 Unchecked, 4.22ms Time], IncrementalHoareTripleChecker [42 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 1236.10ms Time] [2021-11-12 22:30:49,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2021-11-12 22:30:49,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1724. [2021-11-12 22:30:49,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 1.5078351712130005) internal successors, (2598), 1723 states have internal predecessors, (2598), 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) [2021-11-12 22:30:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2598 transitions. [2021-11-12 22:30:49,384 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2598 transitions. Word has length 384 [2021-11-12 22:30:49,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:49,385 INFO L470 AbstractCegarLoop]: Abstraction has 1724 states and 2598 transitions. [2021-11-12 22:30:49,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2021-11-12 22:30:49,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2598 transitions. [2021-11-12 22:30:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2021-11-12 22:30:49,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:49,400 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:49,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:49,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:49,624 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:49,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:49,624 INFO L85 PathProgramCache]: Analyzing trace with hash 442748388, now seen corresponding path program 1 times [2021-11-12 22:30:49,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:49,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778345957] [2021-11-12 22:30:49,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:49,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:49,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:49,630 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:49,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:30:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:50,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:30:50,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:51,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1831 backedges. 1043 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-11-12 22:30:51,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1831 backedges. 1043 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-11-12 22:30:52,366 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:52,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778345957] [2021-11-12 22:30:52,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778345957] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:52,366 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:52,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:30:52,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173445182] [2021-11-12 22:30:52,367 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:52,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:30:52,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:52,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:30:52,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:52,370 INFO L87 Difference]: Start difference. First operand 1724 states and 2598 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 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) [2021-11-12 22:30:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:53,345 INFO L93 Difference]: Finished difference Result 3567 states and 5396 transitions. [2021-11-12 22:30:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:30:53,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 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 456 [2021-11-12 22:30:53,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:53,362 INFO L225 Difference]: With dead ends: 3567 [2021-11-12 22:30:53,363 INFO L226 Difference]: Without dead ends: 1986 [2021-11-12 22:30:53,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 908 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:53,366 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 321 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 856.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.64ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 895.43ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:53,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 729 Invalid, 151 Unknown, 0 Unchecked, 3.64ms Time], IncrementalHoareTripleChecker [41 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 895.43ms Time] [2021-11-12 22:30:53,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2021-11-12 22:30:53,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1986. [2021-11-12 22:30:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1985 states have (on average 1.5037783375314862) internal successors, (2985), 1985 states have internal predecessors, (2985), 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) [2021-11-12 22:30:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2985 transitions. [2021-11-12 22:30:53,454 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2985 transitions. Word has length 456 [2021-11-12 22:30:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:53,455 INFO L470 AbstractCegarLoop]: Abstraction has 1986 states and 2985 transitions. [2021-11-12 22:30:53,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 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) [2021-11-12 22:30:53,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2985 transitions. [2021-11-12 22:30:53,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2021-11-12 22:30:53,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:53,481 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:53,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:53,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:53,700 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:53,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:53,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1209650667, now seen corresponding path program 1 times [2021-11-12 22:30:53,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:53,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222194306] [2021-11-12 22:30:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:53,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:53,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:53,704 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:53,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:30:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:54,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:30:54,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 1206 proven. 0 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2021-11-12 22:30:55,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:30:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 1206 proven. 0 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2021-11-12 22:30:56,800 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:30:56,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222194306] [2021-11-12 22:30:56,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222194306] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:30:56,800 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:30:56,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:30:56,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327160718] [2021-11-12 22:30:56,800 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:30:56,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:30:56,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:30:56,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:30:56,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:56,803 INFO L87 Difference]: Start difference. First operand 1986 states and 2985 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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) [2021-11-12 22:30:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:30:57,438 INFO L93 Difference]: Finished difference Result 4091 states and 6168 transitions. [2021-11-12 22:30:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:30:57,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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 501 [2021-11-12 22:30:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:30:57,454 INFO L225 Difference]: With dead ends: 4091 [2021-11-12 22:30:57,454 INFO L226 Difference]: Without dead ends: 2248 [2021-11-12 22:30:57,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 998 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:30:57,458 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 317 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 513.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.63ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 553.16ms IncrementalHoareTripleChecker+Time [2021-11-12 22:30:57,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 729 Invalid, 149 Unknown, 0 Unchecked, 3.63ms Time], IncrementalHoareTripleChecker [39 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 553.16ms Time] [2021-11-12 22:30:57,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2021-11-12 22:30:57,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2248. [2021-11-12 22:30:57,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 2247 states have (on average 1.4997774810858924) internal successors, (3370), 2247 states have internal predecessors, (3370), 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) [2021-11-12 22:30:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 3370 transitions. [2021-11-12 22:30:57,554 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 3370 transitions. Word has length 501 [2021-11-12 22:30:57,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:30:57,555 INFO L470 AbstractCegarLoop]: Abstraction has 2248 states and 3370 transitions. [2021-11-12 22:30:57,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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) [2021-11-12 22:30:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 3370 transitions. [2021-11-12 22:30:57,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2021-11-12 22:30:57,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:30:57,584 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:30:57,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:30:57,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:30:57,807 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:30:57,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:30:57,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1531921159, now seen corresponding path program 1 times [2021-11-12 22:30:57,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:30:57,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490560308] [2021-11-12 22:30:57,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:30:57,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:30:57,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:30:57,813 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:30:57,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:30:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:30:58,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:30:58,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:30:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 1629 proven. 0 refuted. 0 times theorem prover too weak. 1381 trivial. 0 not checked. [2021-11-12 22:30:59,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:31:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 1629 proven. 0 refuted. 0 times theorem prover too weak. 1381 trivial. 0 not checked. [2021-11-12 22:31:01,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:31:01,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490560308] [2021-11-12 22:31:01,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490560308] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:01,420 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:01,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:31:01,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122483698] [2021-11-12 22:31:01,421 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:01,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:31:01,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:31:01,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:31:01,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:31:01,424 INFO L87 Difference]: Start difference. First operand 2248 states and 3370 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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) [2021-11-12 22:31:02,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:31:02,155 INFO L93 Difference]: Finished difference Result 4616 states and 6938 transitions. [2021-11-12 22:31:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:31:02,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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 575 [2021-11-12 22:31:02,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:31:02,173 INFO L225 Difference]: With dead ends: 4616 [2021-11-12 22:31:02,173 INFO L226 Difference]: Without dead ends: 2511 [2021-11-12 22:31:02,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1148 GetRequests, 1146 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:31:02,181 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 319 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 591.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.44ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 632.29ms IncrementalHoareTripleChecker+Time [2021-11-12 22:31:02,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 727 Invalid, 146 Unknown, 0 Unchecked, 2.44ms Time], IncrementalHoareTripleChecker [37 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 632.29ms Time] [2021-11-12 22:31:02,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2021-11-12 22:31:02,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2511. [2021-11-12 22:31:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2510 states have (on average 1.49601593625498) internal successors, (3755), 2510 states have internal predecessors, (3755), 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) [2021-11-12 22:31:02,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3755 transitions. [2021-11-12 22:31:02,312 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3755 transitions. Word has length 575 [2021-11-12 22:31:02,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:31:02,313 INFO L470 AbstractCegarLoop]: Abstraction has 2511 states and 3755 transitions. [2021-11-12 22:31:02,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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) [2021-11-12 22:31:02,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3755 transitions. [2021-11-12 22:31:02,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2021-11-12 22:31:02,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:31:02,325 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:31:02,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:31:02,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:31:02,552 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:31:02,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:31:02,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1391653982, now seen corresponding path program 1 times [2021-11-12 22:31:02,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:31:02,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593842809] [2021-11-12 22:31:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:31:02,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:31:02,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:31:02,556 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:31:02,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:31:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:31:48,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:31:48,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:31:49,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:31:49,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:31:49,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:31:49,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:31:49,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:31:49,420 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-12 22:31:49,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-12 22:31:49,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:31:49,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:31:49,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:31:49,838 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-12 22:31:49,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-12 22:31:52,251 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 22:31:52,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-12 22:31:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 1380 proven. 0 refuted. 0 times theorem prover too weak. 2566 trivial. 0 not checked. [2021-11-12 22:31:52,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:31:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 1380 proven. 0 refuted. 0 times theorem prover too weak. 2566 trivial. 0 not checked. [2021-11-12 22:31:53,779 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:31:53,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593842809] [2021-11-12 22:31:53,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593842809] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:31:53,779 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:31:53,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-12 22:31:53,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929058614] [2021-11-12 22:31:53,781 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:31:53,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:31:53,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:31:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:31:53,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:31:53,784 INFO L87 Difference]: Start difference. First operand 2511 states and 3755 transitions. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 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) [2021-11-12 22:31:55,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:31:57,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:32:00,048 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:32:03,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:32:12,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:32:14,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:32:24,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:32:27,374 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:32:28,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:32:37,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:32:42,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:32:52,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:32:54,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:32:59,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:32:59,191 INFO L93 Difference]: Finished difference Result 11261 states and 16910 transitions. [2021-11-12 22:32:59,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:32:59,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 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 649 [2021-11-12 22:32:59,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:32:59,251 INFO L225 Difference]: With dead ends: 11261 [2021-11-12 22:32:59,252 INFO L226 Difference]: Without dead ends: 8760 [2021-11-12 22:32:59,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1299 GetRequests, 1290 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:32:59,258 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 387 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 83 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63204.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.64ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64840.80ms IncrementalHoareTripleChecker+Time [2021-11-12 22:32:59,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 1501 Invalid, 1253 Unknown, 0 Unchecked, 12.64ms Time], IncrementalHoareTripleChecker [83 Valid, 1166 Invalid, 4 Unknown, 0 Unchecked, 64840.80ms Time] [2021-11-12 22:32:59,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8760 states. [2021-11-12 22:32:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8760 to 3324. [2021-11-12 22:32:59,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 3323 states have (on average 1.5747818236533253) internal successors, (5233), 3323 states have internal predecessors, (5233), 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) [2021-11-12 22:32:59,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 5233 transitions. [2021-11-12 22:32:59,578 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 5233 transitions. Word has length 649 [2021-11-12 22:32:59,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:32:59,579 INFO L470 AbstractCegarLoop]: Abstraction has 3324 states and 5233 transitions. [2021-11-12 22:32:59,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 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) [2021-11-12 22:32:59,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 5233 transitions. [2021-11-12 22:32:59,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2021-11-12 22:32:59,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:32:59,595 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:32:59,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:32:59,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:32:59,818 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:32:59,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:32:59,819 INFO L85 PathProgramCache]: Analyzing trace with hash -890583648, now seen corresponding path program 1 times [2021-11-12 22:32:59,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:32:59,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415266350] [2021-11-12 22:32:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:32:59,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:32:59,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:32:59,826 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:32:59,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:35:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:35:10,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:35:10,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:35:11,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:35:11,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:35:11,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:35:11,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:35:11,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:35:11,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:35:11,136 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-12 22:35:11,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 40 [2021-11-12 22:35:11,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:35:11,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:35:11,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:35:11,546 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-12 22:35:11,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 72 treesize of output 89 [2021-11-12 22:35:12,870 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 22:35:12,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 110 treesize of output 38 [2021-11-12 22:35:14,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 733 proven. 0 refuted. 0 times theorem prover too weak. 3213 trivial. 0 not checked. [2021-11-12 22:35:14,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:35:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 733 proven. 0 refuted. 0 times theorem prover too weak. 3213 trivial. 0 not checked. [2021-11-12 22:35:16,300 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:35:16,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415266350] [2021-11-12 22:35:16,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415266350] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:35:16,300 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:35:16,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-12 22:35:16,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664690464] [2021-11-12 22:35:16,301 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:35:16,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:35:16,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:35:16,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:35:16,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:35:16,303 INFO L87 Difference]: Start difference. First operand 3324 states and 5233 transitions. Second operand has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 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) [2021-11-12 22:35:18,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:35:22,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:35:24,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:35:39,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:35:43,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:35:45,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:35:48,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:36:03,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:36:05,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:36:08,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:36:13,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:36:13,234 INFO L93 Difference]: Finished difference Result 11806 states and 18539 transitions. [2021-11-12 22:36:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:36:13,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 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 649 [2021-11-12 22:36:13,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:36:13,275 INFO L225 Difference]: With dead ends: 11806 [2021-11-12 22:36:13,275 INFO L226 Difference]: Without dead ends: 8492 [2021-11-12 22:36:13,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1298 GetRequests, 1290 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:36:13,281 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 295 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 74 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55091.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.85ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56469.85ms IncrementalHoareTripleChecker+Time [2021-11-12 22:36:13,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 1056 Invalid, 930 Unknown, 0 Unchecked, 9.85ms Time], IncrementalHoareTripleChecker [74 Valid, 854 Invalid, 2 Unknown, 0 Unchecked, 56469.85ms Time] [2021-11-12 22:36:13,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8492 states. [2021-11-12 22:36:13,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8492 to 4212. [2021-11-12 22:36:13,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 4211 states have (on average 1.6114937069579671) internal successors, (6786), 4211 states have internal predecessors, (6786), 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) [2021-11-12 22:36:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 6786 transitions. [2021-11-12 22:36:13,716 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 6786 transitions. Word has length 649 [2021-11-12 22:36:13,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:36:13,717 INFO L470 AbstractCegarLoop]: Abstraction has 4212 states and 6786 transitions. [2021-11-12 22:36:13,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 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) [2021-11-12 22:36:13,717 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 6786 transitions. [2021-11-12 22:36:13,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2021-11-12 22:36:13,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:36:13,733 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:36:13,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:36:13,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:36:13,958 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:36:13,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:36:13,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1235463390, now seen corresponding path program 1 times [2021-11-12 22:36:13,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:36:13,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580670916] [2021-11-12 22:36:13,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:36:13,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:36:13,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:36:13,999 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:36:14,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68341e3b-2f1b-4ace-941a-72ddb9134119/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process