./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:18:52,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:18:52,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:18:53,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:18:53,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:18:53,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:18:53,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:18:53,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:18:53,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:18:53,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:18:53,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:18:53,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:18:53,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:18:53,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:18:53,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:18:53,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:18:53,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:18:53,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:18:53,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:18:53,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:18:53,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:18:53,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:18:53,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:18:53,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:18:53,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:18:53,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:18:53,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:18:53,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:18:53,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:18:53,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:18:53,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:18:53,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:18:53,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:18:53,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:18:53,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:18:53,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:18:53,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:18:53,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:18:53,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:18:53,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:18:53,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:18:53,132 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-19 13:18:53,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:18:53,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:18:53,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:18:53,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:18:53,184 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:18:53,184 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:18:53,185 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:18:53,185 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:18:53,185 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:18:53,185 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:18:53,186 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:18:53,187 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:18:53,187 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:18:53,187 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:18:53,187 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:18:53,188 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:18:53,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 13:18:53,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 13:18:53,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:18:53,189 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:18:53,189 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:18:53,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:18:53,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:18:53,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:18:53,190 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 13:18:53,190 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 13:18:53,192 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 13:18:53,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:18:53,193 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:18:53,193 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:18:53,193 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:18:53,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:18:53,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:18:53,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:18:53,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:18:53,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:18:53,195 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:18:53,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:18:53,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:18:53,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:18:53,196 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_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 [2021-11-19 13:18:53,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:18:53,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:18:53,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:18:53,543 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:18:53,543 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:18:53,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2021-11-19 13:18:53,613 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/data/897e7c843/907c3b5b3173447f9d77a42b5850810e/FLAG285f28f42 [2021-11-19 13:18:54,314 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:18:54,315 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2021-11-19 13:18:54,342 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/data/897e7c843/907c3b5b3173447f9d77a42b5850810e/FLAG285f28f42 [2021-11-19 13:18:54,464 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/data/897e7c843/907c3b5b3173447f9d77a42b5850810e [2021-11-19 13:18:54,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:18:54,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:18:54,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:18:54,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:18:54,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:18:54,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:18:54" (1/1) ... [2021-11-19 13:18:54,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@258e6a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:54, skipping insertion in model container [2021-11-19 13:18:54,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:18:54" (1/1) ... [2021-11-19 13:18:54,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:18:54,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:18:55,043 WARN L230 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_8dca333e-279a-4dc0-9307-a721a6c14566/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i[33022,33035] [2021-11-19 13:18:55,341 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:18:55,361 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) [2021-11-19 13:18:55,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@30d420c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:55, skipping insertion in model container [2021-11-19 13:18:55,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:18:55,362 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:18:55,365 INFO L158 Benchmark]: Toolchain (without parser) took 893.00ms. Allocated memory is still 121.6MB. Free memory was 88.9MB in the beginning and 75.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 13:18:55,367 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:18:55,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 887.68ms. Allocated memory is still 121.6MB. Free memory was 88.9MB in the beginning and 75.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 13:18:55,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 887.68ms. Allocated memory is still 121.6MB. Free memory was 88.9MB in the beginning and 75.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:18:57,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:18:57,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:18:57,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:18:57,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:18:57,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:18:57,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:18:57,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:18:57,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:18:57,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:18:57,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:18:57,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:18:57,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:18:57,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:18:57,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:18:57,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:18:57,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:18:57,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:18:57,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:18:57,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:18:57,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:18:57,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:18:57,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:18:57,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:18:57,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:18:57,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:18:57,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:18:57,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:18:57,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:18:57,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:18:57,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:18:57,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:18:57,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:18:57,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:18:57,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:18:57,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:18:57,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:18:57,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:18:57,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:18:57,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:18:57,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:18:57,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-19 13:18:57,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:18:57,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:18:57,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:18:57,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:18:57,932 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:18:57,932 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:18:57,932 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:18:57,933 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:18:57,933 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:18:57,933 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:18:57,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 13:18:57,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 13:18:57,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:18:57,935 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:18:57,935 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 13:18:57,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:18:57,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:18:57,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:18:57,936 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 13:18:57,936 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 13:18:57,936 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 13:18:57,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:18:57,936 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:18:57,937 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:18:57,937 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:18:57,937 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:18:57,937 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:18:57,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:18:57,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:18:57,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:18:57,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:18:57,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:18:57,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:18:57,939 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:18:57,939 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:18:57,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:18:57,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:18:57,940 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_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 [2021-11-19 13:18:58,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:18:58,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:18:58,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:18:58,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:18:58,364 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:18:58,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2021-11-19 13:18:58,440 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/data/97763ddcf/729b61ff8aa5402a8a364d8734cb9c7f/FLAG964b50d07 [2021-11-19 13:18:59,198 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:18:59,198 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2021-11-19 13:18:59,217 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/data/97763ddcf/729b61ff8aa5402a8a364d8734cb9c7f/FLAG964b50d07 [2021-11-19 13:18:59,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/data/97763ddcf/729b61ff8aa5402a8a364d8734cb9c7f [2021-11-19 13:18:59,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:18:59,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:18:59,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:18:59,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:18:59,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:18:59,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:18:59" (1/1) ... [2021-11-19 13:18:59,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e106ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:59, skipping insertion in model container [2021-11-19 13:18:59,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:18:59" (1/1) ... [2021-11-19 13:18:59,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:18:59,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:18:59,977 WARN L230 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_8dca333e-279a-4dc0-9307-a721a6c14566/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i[33022,33035] [2021-11-19 13:19:00,252 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:00,266 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:19:00,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:19:00,332 WARN L230 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_8dca333e-279a-4dc0-9307-a721a6c14566/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i[33022,33035] [2021-11-19 13:19:00,542 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:00,549 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:19:00,590 WARN L230 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_8dca333e-279a-4dc0-9307-a721a6c14566/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i[33022,33035] [2021-11-19 13:19:00,741 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:19:00,791 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:19:00,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:00 WrapperNode [2021-11-19 13:19:00,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:19:00,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:19:00,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:19:00,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:19:00,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:00" (1/1) ... [2021-11-19 13:19:00,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:00" (1/1) ... [2021-11-19 13:19:01,026 INFO L137 Inliner]: procedures = 180, calls = 575, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2348 [2021-11-19 13:19:01,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:19:01,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:19:01,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:19:01,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:19:01,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:00" (1/1) ... [2021-11-19 13:19:01,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:00" (1/1) ... [2021-11-19 13:19:01,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:00" (1/1) ... [2021-11-19 13:19:01,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:00" (1/1) ... [2021-11-19 13:19:01,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:00" (1/1) ... [2021-11-19 13:19:01,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:00" (1/1) ... [2021-11-19 13:19:01,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:00" (1/1) ... [2021-11-19 13:19:01,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:19:01,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:19:01,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:19:01,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:19:01,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:00" (1/1) ... [2021-11-19 13:19:01,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:19:01,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:19:01,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:19:01,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:19:01,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:19:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-19 13:19:01,334 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-19 13:19:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:19:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:19:01,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:19:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 13:19:01,335 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 13:19:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:19:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:19:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:19:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:19:01,335 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 13:19:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:19:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:19:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:19:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:19:01,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:19:01,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:19:01,650 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:19:01,652 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:19:01,665 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 13:19:12,581 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:19:12,608 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:19:12,609 INFO L301 CfgBuilder]: Removed 160 assume(true) statements. [2021-11-19 13:19:12,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:19:12 BoogieIcfgContainer [2021-11-19 13:19:12,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:19:12,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:19:12,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:19:12,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:19:12,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:18:59" (1/3) ... [2021-11-19 13:19:12,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77576755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:19:12, skipping insertion in model container [2021-11-19 13:19:12,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:19:00" (2/3) ... [2021-11-19 13:19:12,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77576755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:19:12, skipping insertion in model container [2021-11-19 13:19:12,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:19:12" (3/3) ... [2021-11-19 13:19:12,625 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-2.i [2021-11-19 13:19:12,631 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:19:12,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1095 error locations. [2021-11-19 13:19:12,680 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:19:12,688 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:19:12,688 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1095 error locations. [2021-11-19 13:19:12,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 2259 states, 1152 states have (on average 2.2144097222222223) internal successors, (2551), 2245 states have internal predecessors, (2551), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-19 13:19:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 13:19:12,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:12,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 13:19:12,780 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:19:12,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:12,791 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2021-11-19 13:19:12,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:12,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554085358] [2021-11-19 13:19:12,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:12,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:12,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:12,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:12,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:19:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:13,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:19:13,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:13,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:19:13,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:13,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:13,247 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:13,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554085358] [2021-11-19 13:19:13,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554085358] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:13,248 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:13,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:19:13,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467662682] [2021-11-19 13:19:13,251 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:13,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:19:13,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:13,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:19:13,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:19:13,313 INFO L87 Difference]: Start difference. First operand has 2259 states, 1152 states have (on average 2.2144097222222223) internal successors, (2551), 2245 states have internal predecessors, (2551), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:18,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:18,248 INFO L93 Difference]: Finished difference Result 2934 states and 3120 transitions. [2021-11-19 13:19:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:19:18,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-19 13:19:18,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:18,291 INFO L225 Difference]: With dead ends: 2934 [2021-11-19 13:19:18,291 INFO L226 Difference]: Without dead ends: 2932 [2021-11-19 13:19:18,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:19:18,297 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 2142 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:18,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2152 Valid, 1869 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-19 13:19:18,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2021-11-19 13:19:18,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 2401. [2021-11-19 13:19:18,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 1318 states have (on average 2.0515933232169954) internal successors, (2704), 2385 states have internal predecessors, (2704), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:19:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 2736 transitions. [2021-11-19 13:19:18,472 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 2736 transitions. Word has length 3 [2021-11-19 13:19:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:18,474 INFO L470 AbstractCegarLoop]: Abstraction has 2401 states and 2736 transitions. [2021-11-19 13:19:18,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:18,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 2736 transitions. [2021-11-19 13:19:18,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 13:19:18,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:18,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 13:19:18,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:18,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:18,691 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:19:18,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:18,696 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2021-11-19 13:19:18,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:18,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249868663] [2021-11-19 13:19:18,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:18,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:18,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:18,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:18,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:19:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:18,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:19:18,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:18,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:19:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:18,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:19,010 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:19,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249868663] [2021-11-19 13:19:19,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249868663] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:19,011 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:19,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 13:19:19,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423009436] [2021-11-19 13:19:19,012 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:19,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:19:19,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:19,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:19:19,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:19,014 INFO L87 Difference]: Start difference. First operand 2401 states and 2736 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-19 13:19:30,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:30,407 INFO L93 Difference]: Finished difference Result 3701 states and 4147 transitions. [2021-11-19 13:19:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:19:30,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-19 13:19:30,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:30,429 INFO L225 Difference]: With dead ends: 3701 [2021-11-19 13:19:30,429 INFO L226 Difference]: Without dead ends: 3701 [2021-11-19 13:19:30,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:30,431 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 2670 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2678 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:30,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2678 Valid, 3520 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2021-11-19 13:19:30,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2021-11-19 13:19:30,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 2565. [2021-11-19 13:19:30,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 1494 states have (on average 2.038821954484605) internal successors, (3046), 2549 states have internal predecessors, (3046), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:19:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3078 transitions. [2021-11-19 13:19:30,510 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3078 transitions. Word has length 3 [2021-11-19 13:19:30,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:30,510 INFO L470 AbstractCegarLoop]: Abstraction has 2565 states and 3078 transitions. [2021-11-19 13:19:30,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-19 13:19:30,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3078 transitions. [2021-11-19 13:19:30,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:19:30,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:30,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:30,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:30,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:30,723 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:19:30,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:30,724 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2021-11-19 13:19:30,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:30,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393511404] [2021-11-19 13:19:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:30,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:30,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:30,728 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:30,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:19:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:30,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:19:30,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:30,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:19:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:30,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:30,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:30,980 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:30,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393511404] [2021-11-19 13:19:30,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393511404] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:30,981 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:30,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:19:30,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542959507] [2021-11-19 13:19:30,982 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:30,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:19:30,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:30,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:19:30,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:19:30,985 INFO L87 Difference]: Start difference. First operand 2565 states and 3078 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:34,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:34,906 INFO L93 Difference]: Finished difference Result 3303 states and 3816 transitions. [2021-11-19 13:19:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:19:34,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 13:19:34,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:34,926 INFO L225 Difference]: With dead ends: 3303 [2021-11-19 13:19:34,926 INFO L226 Difference]: Without dead ends: 3303 [2021-11-19 13:19:34,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:19:34,928 INFO L933 BasicCegarLoop]: 2161 mSDtfsCounter, 1987 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:34,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 2909 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-19 13:19:34,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2021-11-19 13:19:34,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 2474. [2021-11-19 13:19:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 1494 states have (on average 1.9551539491298529) internal successors, (2921), 2458 states have internal predecessors, (2921), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:19:34,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 2953 transitions. [2021-11-19 13:19:34,998 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 2953 transitions. Word has length 8 [2021-11-19 13:19:35,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:35,026 INFO L470 AbstractCegarLoop]: Abstraction has 2474 states and 2953 transitions. [2021-11-19 13:19:35,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:35,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 2953 transitions. [2021-11-19 13:19:35,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 13:19:35,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:35,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:35,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:35,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:35,227 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:19:35,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:35,228 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2021-11-19 13:19:35,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:35,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584149656] [2021-11-19 13:19:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:35,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:35,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:35,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:35,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:19:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:35,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:19:35,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:35,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:19:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:35,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:35,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:35,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:35,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584149656] [2021-11-19 13:19:35,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584149656] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:35,584 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:35,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 13:19:35,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365317246] [2021-11-19 13:19:35,585 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:35,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:19:35,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:35,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:19:35,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:35,586 INFO L87 Difference]: Start difference. First operand 2474 states and 2953 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:45,628 INFO L93 Difference]: Finished difference Result 3429 states and 3844 transitions. [2021-11-19 13:19:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:19:45,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 13:19:45,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:45,645 INFO L225 Difference]: With dead ends: 3429 [2021-11-19 13:19:45,645 INFO L226 Difference]: Without dead ends: 3429 [2021-11-19 13:19:45,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:45,647 INFO L933 BasicCegarLoop]: 2491 mSDtfsCounter, 1441 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 4655 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:45,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1447 Valid, 4655 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2021-11-19 13:19:45,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2021-11-19 13:19:45,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2466. [2021-11-19 13:19:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 1496 states have (on average 1.9391711229946524) internal successors, (2901), 2450 states have internal predecessors, (2901), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:19:45,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 2933 transitions. [2021-11-19 13:19:45,711 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 2933 transitions. Word has length 8 [2021-11-19 13:19:45,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:45,712 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 2933 transitions. [2021-11-19 13:19:45,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:45,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 2933 transitions. [2021-11-19 13:19:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 13:19:45,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:45,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:45,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:45,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:45,925 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:19:45,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:45,926 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times [2021-11-19 13:19:45,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:45,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022767217] [2021-11-19 13:19:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:45,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:45,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:45,928 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:45,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:19:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:46,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:19:46,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:46,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:46,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:46,188 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:46,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022767217] [2021-11-19 13:19:46,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022767217] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:46,188 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:46,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:19:46,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850460837] [2021-11-19 13:19:46,189 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:46,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:19:46,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:46,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:19:46,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:46,190 INFO L87 Difference]: Start difference. First operand 2466 states and 2933 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:46,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:46,248 INFO L93 Difference]: Finished difference Result 2424 states and 2890 transitions. [2021-11-19 13:19:46,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:19:46,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-19 13:19:46,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:46,262 INFO L225 Difference]: With dead ends: 2424 [2021-11-19 13:19:46,263 INFO L226 Difference]: Without dead ends: 2424 [2021-11-19 13:19:46,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:46,265 INFO L933 BasicCegarLoop]: 2210 mSDtfsCounter, 1006 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 4630 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:46,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1010 Valid, 4630 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:19:46,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2021-11-19 13:19:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2424. [2021-11-19 13:19:46,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 1478 states have (on average 1.9336941813261164) internal successors, (2858), 2408 states have internal predecessors, (2858), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:19:46,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 2890 transitions. [2021-11-19 13:19:46,320 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 2890 transitions. Word has length 11 [2021-11-19 13:19:46,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:46,320 INFO L470 AbstractCegarLoop]: Abstraction has 2424 states and 2890 transitions. [2021-11-19 13:19:46,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 2890 transitions. [2021-11-19 13:19:46,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 13:19:46,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:46,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:46,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:46,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:46,533 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:19:46,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:46,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times [2021-11-19 13:19:46,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:46,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630841737] [2021-11-19 13:19:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:46,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:46,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:46,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:46,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:19:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:46,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:19:46,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:46,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:46,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:46,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630841737] [2021-11-19 13:19:46,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630841737] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:46,784 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:46,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:19:46,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160042862] [2021-11-19 13:19:46,785 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:46,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:19:46,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:46,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:19:46,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:19:46,786 INFO L87 Difference]: Start difference. First operand 2424 states and 2890 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:46,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:46,908 INFO L93 Difference]: Finished difference Result 2403 states and 2862 transitions. [2021-11-19 13:19:46,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:19:46,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-19 13:19:46,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:46,921 INFO L225 Difference]: With dead ends: 2403 [2021-11-19 13:19:46,921 INFO L226 Difference]: Without dead ends: 2403 [2021-11-19 13:19:46,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:19:46,922 INFO L933 BasicCegarLoop]: 2165 mSDtfsCounter, 977 mSDsluCounter, 4578 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 6743 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:46,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 6743 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:19:46,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2021-11-19 13:19:46,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2402. [2021-11-19 13:19:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 1470 states have (on average 1.9244897959183673) internal successors, (2829), 2386 states have internal predecessors, (2829), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:19:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 2861 transitions. [2021-11-19 13:19:46,977 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 2861 transitions. Word has length 13 [2021-11-19 13:19:46,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:46,978 INFO L470 AbstractCegarLoop]: Abstraction has 2402 states and 2861 transitions. [2021-11-19 13:19:46,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:19:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 2861 transitions. [2021-11-19 13:19:46,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 13:19:46,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:46,980 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] [2021-11-19 13:19:46,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:47,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:47,193 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:19:47,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2021-11-19 13:19:47,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:47,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924838277] [2021-11-19 13:19:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:47,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:47,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:47,195 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:47,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:19:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:47,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:19:47,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:47,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:47,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:47,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924838277] [2021-11-19 13:19:47,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924838277] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:47,460 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:47,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:19:47,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614251057] [2021-11-19 13:19:47,461 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:47,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:19:47,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:47,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:19:47,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:47,463 INFO L87 Difference]: Start difference. First operand 2402 states and 2861 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-19 13:19:47,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:47,569 INFO L93 Difference]: Finished difference Result 3878 states and 4485 transitions. [2021-11-19 13:19:47,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:19:47,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-19 13:19:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:47,589 INFO L225 Difference]: With dead ends: 3878 [2021-11-19 13:19:47,589 INFO L226 Difference]: Without dead ends: 3878 [2021-11-19 13:19:47,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:47,591 INFO L933 BasicCegarLoop]: 3487 mSDtfsCounter, 4182 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4192 SdHoareTripleChecker+Valid, 5105 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:47,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4192 Valid, 5105 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:19:47,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-11-19 13:19:47,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 2360. [2021-11-19 13:19:47,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 1452 states have (on average 1.918732782369146) internal successors, (2786), 2344 states have internal predecessors, (2786), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:19:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 2818 transitions. [2021-11-19 13:19:47,654 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 2818 transitions. Word has length 20 [2021-11-19 13:19:47,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:47,654 INFO L470 AbstractCegarLoop]: Abstraction has 2360 states and 2818 transitions. [2021-11-19 13:19:47,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-19 13:19:47,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 2818 transitions. [2021-11-19 13:19:47,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 13:19:47,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:47,656 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] [2021-11-19 13:19:47,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:47,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:47,868 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:19:47,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:47,869 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times [2021-11-19 13:19:47,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:47,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874713695] [2021-11-19 13:19:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:47,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:47,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:47,870 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:47,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:19:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:48,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:19:48,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:48,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:48,133 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:48,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874713695] [2021-11-19 13:19:48,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874713695] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:48,133 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:48,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 13:19:48,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600101354] [2021-11-19 13:19:48,134 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:48,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:19:48,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:48,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:19:48,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:48,136 INFO L87 Difference]: Start difference. First operand 2360 states and 2818 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-19 13:19:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:48,213 INFO L93 Difference]: Finished difference Result 3751 states and 4304 transitions. [2021-11-19 13:19:48,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:19:48,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-19 13:19:48,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:48,234 INFO L225 Difference]: With dead ends: 3751 [2021-11-19 13:19:48,234 INFO L226 Difference]: Without dead ends: 3751 [2021-11-19 13:19:48,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:48,235 INFO L933 BasicCegarLoop]: 3395 mSDtfsCounter, 2048 mSDsluCounter, 3136 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 6531 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:48,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2058 Valid, 6531 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:19:48,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2021-11-19 13:19:48,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 2282. [2021-11-19 13:19:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 1398 states have (on average 1.9005722460658083) internal successors, (2657), 2266 states have internal predecessors, (2657), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:19:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 2689 transitions. [2021-11-19 13:19:48,292 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 2689 transitions. Word has length 20 [2021-11-19 13:19:48,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:48,293 INFO L470 AbstractCegarLoop]: Abstraction has 2282 states and 2689 transitions. [2021-11-19 13:19:48,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-11-19 13:19:48,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 2689 transitions. [2021-11-19 13:19:48,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 13:19:48,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:48,295 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] [2021-11-19 13:19:48,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:48,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:48,508 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:19:48,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:48,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2021-11-19 13:19:48,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:48,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788878595] [2021-11-19 13:19:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:48,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:48,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:48,511 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:48,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:19:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:48,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:19:48,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:48,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:48,811 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:48,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788878595] [2021-11-19 13:19:48,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788878595] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:48,811 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:48,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:19:48,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601884658] [2021-11-19 13:19:48,812 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:48,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:19:48,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:48,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:19:48,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:19:48,820 INFO L87 Difference]: Start difference. First operand 2282 states and 2689 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-19 13:19:48,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:48,963 INFO L93 Difference]: Finished difference Result 3737 states and 4285 transitions. [2021-11-19 13:19:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:19:48,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 22 [2021-11-19 13:19:48,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:48,977 INFO L225 Difference]: With dead ends: 3737 [2021-11-19 13:19:48,977 INFO L226 Difference]: Without dead ends: 3737 [2021-11-19 13:19:48,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:19:48,978 INFO L933 BasicCegarLoop]: 3356 mSDtfsCounter, 4028 mSDsluCounter, 4924 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4038 SdHoareTripleChecker+Valid, 8280 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:48,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4038 Valid, 8280 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:19:48,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-11-19 13:19:49,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 2260. [2021-11-19 13:19:49,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 1390 states have (on average 1.8906474820143886) internal successors, (2628), 2244 states have internal predecessors, (2628), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:19:49,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 2660 transitions. [2021-11-19 13:19:49,027 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 2660 transitions. Word has length 22 [2021-11-19 13:19:49,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:49,027 INFO L470 AbstractCegarLoop]: Abstraction has 2260 states and 2660 transitions. [2021-11-19 13:19:49,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-19 13:19:49,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 2660 transitions. [2021-11-19 13:19:49,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 13:19:49,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:49,029 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] [2021-11-19 13:19:49,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:49,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:49,241 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:19:49,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:49,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times [2021-11-19 13:19:49,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:49,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174159590] [2021-11-19 13:19:49,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:49,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:49,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:49,242 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:49,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:19:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:49,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:19:49,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:49,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:49,552 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:49,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174159590] [2021-11-19 13:19:49,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174159590] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:49,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:49,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:19:49,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667780740] [2021-11-19 13:19:49,553 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:49,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:19:49,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:49,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:19:49,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:19:49,556 INFO L87 Difference]: Start difference. First operand 2260 states and 2660 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-19 13:19:49,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:49,673 INFO L93 Difference]: Finished difference Result 3672 states and 4162 transitions. [2021-11-19 13:19:49,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:19:49,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 22 [2021-11-19 13:19:49,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:49,694 INFO L225 Difference]: With dead ends: 3672 [2021-11-19 13:19:49,695 INFO L226 Difference]: Without dead ends: 3672 [2021-11-19 13:19:49,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:19:49,696 INFO L933 BasicCegarLoop]: 3502 mSDtfsCounter, 1984 mSDsluCounter, 6561 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 10063 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:49,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1994 Valid, 10063 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:19:49,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2021-11-19 13:19:49,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 2222. [2021-11-19 13:19:49,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 1366 states have (on average 1.8601756954612005) internal successors, (2541), 2206 states have internal predecessors, (2541), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:19:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 2573 transitions. [2021-11-19 13:19:49,774 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 2573 transitions. Word has length 22 [2021-11-19 13:19:49,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:49,775 INFO L470 AbstractCegarLoop]: Abstraction has 2222 states and 2573 transitions. [2021-11-19 13:19:49,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-19 13:19:49,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 2573 transitions. [2021-11-19 13:19:49,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 13:19:49,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:49,777 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] [2021-11-19 13:19:49,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:50,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:50,000 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:19:50,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:50,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times [2021-11-19 13:19:50,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:50,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471193646] [2021-11-19 13:19:50,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:50,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:50,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:50,003 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:50,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:19:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:50,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:19:50,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:50,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:19:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:50,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:50,409 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:50,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471193646] [2021-11-19 13:19:50,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471193646] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:50,409 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:50,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:19:50,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356397783] [2021-11-19 13:19:50,410 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:50,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:19:50,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:50,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:19:50,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:50,411 INFO L87 Difference]: Start difference. First operand 2222 states and 2573 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-19 13:19:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:54,208 INFO L93 Difference]: Finished difference Result 2674 states and 2936 transitions. [2021-11-19 13:19:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:19:54,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-11-19 13:19:54,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:54,215 INFO L225 Difference]: With dead ends: 2674 [2021-11-19 13:19:54,215 INFO L226 Difference]: Without dead ends: 2674 [2021-11-19 13:19:54,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:19:54,216 INFO L933 BasicCegarLoop]: 1243 mSDtfsCounter, 2729 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:54,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 2340 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 13:19:54,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-11-19 13:19:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2218. [2021-11-19 13:19:54,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 1366 states have (on average 1.857247437774524) internal successors, (2537), 2202 states have internal predecessors, (2537), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:19:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 2569 transitions. [2021-11-19 13:19:54,261 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 2569 transitions. Word has length 27 [2021-11-19 13:19:54,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:54,261 INFO L470 AbstractCegarLoop]: Abstraction has 2218 states and 2569 transitions. [2021-11-19 13:19:54,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-19 13:19:54,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 2569 transitions. [2021-11-19 13:19:54,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 13:19:54,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:54,263 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] [2021-11-19 13:19:54,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:54,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:54,474 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:19:54,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:54,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times [2021-11-19 13:19:54,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:54,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429162025] [2021-11-19 13:19:54,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:54,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:54,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:54,477 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:54,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:19:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:54,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:19:54,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:54,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:19:54,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:54,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:55,397 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:55,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429162025] [2021-11-19 13:19:55,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429162025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:55,398 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:55,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:19:55,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791717439] [2021-11-19 13:19:55,399 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:55,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:19:55,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:55,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:19:55,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:19:55,400 INFO L87 Difference]: Start difference. First operand 2218 states and 2569 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-11-19 13:20:08,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:08,861 INFO L93 Difference]: Finished difference Result 3215 states and 3552 transitions. [2021-11-19 13:20:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:20:08,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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 27 [2021-11-19 13:20:08,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:08,868 INFO L225 Difference]: With dead ends: 3215 [2021-11-19 13:20:08,868 INFO L226 Difference]: Without dead ends: 3215 [2021-11-19 13:20:08,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:20:08,869 INFO L933 BasicCegarLoop]: 1481 mSDtfsCounter, 4179 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 3520 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4179 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:08,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4179 Valid, 4555 Invalid, 3544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3520 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2021-11-19 13:20:08,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2021-11-19 13:20:08,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 2251. [2021-11-19 13:20:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 1400 states have (on average 1.8385714285714285) internal successors, (2574), 2235 states have internal predecessors, (2574), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:20:08,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 2606 transitions. [2021-11-19 13:20:08,914 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 2606 transitions. Word has length 27 [2021-11-19 13:20:08,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:08,915 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 2606 transitions. [2021-11-19 13:20:08,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-11-19 13:20:08,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 2606 transitions. [2021-11-19 13:20:08,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 13:20:08,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:08,917 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] [2021-11-19 13:20:08,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-19 13:20:09,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:09,128 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:20:09,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:09,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2021-11-19 13:20:09,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:09,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092251874] [2021-11-19 13:20:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:09,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:09,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:09,131 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:09,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:20:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:09,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:20:09,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:09,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:20:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:09,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:09,627 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:09,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092251874] [2021-11-19 13:20:09,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092251874] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:09,627 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:09,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:20:09,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004246722] [2021-11-19 13:20:09,628 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:09,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:20:09,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:09,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:20:09,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:20:09,630 INFO L87 Difference]: Start difference. First operand 2251 states and 2606 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-19 13:20:16,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:16,536 INFO L93 Difference]: Finished difference Result 4335 states and 4885 transitions. [2021-11-19 13:20:16,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:20:16,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2021-11-19 13:20:16,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:16,547 INFO L225 Difference]: With dead ends: 4335 [2021-11-19 13:20:16,548 INFO L226 Difference]: Without dead ends: 4335 [2021-11-19 13:20:16,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:20:16,549 INFO L933 BasicCegarLoop]: 2413 mSDtfsCounter, 4087 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 2828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:16,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4094 Valid, 4520 Invalid, 2828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-19 13:20:16,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2021-11-19 13:20:16,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 2247. [2021-11-19 13:20:16,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 1400 states have (on average 1.8357142857142856) internal successors, (2570), 2231 states have internal predecessors, (2570), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:20:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 2602 transitions. [2021-11-19 13:20:16,603 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 2602 transitions. Word has length 36 [2021-11-19 13:20:16,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:16,603 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 2602 transitions. [2021-11-19 13:20:16,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-19 13:20:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 2602 transitions. [2021-11-19 13:20:16,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 13:20:16,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:16,605 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] [2021-11-19 13:20:16,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:16,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:16,819 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:20:16,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:16,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2021-11-19 13:20:16,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:16,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163410573] [2021-11-19 13:20:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:16,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:16,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:16,823 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:16,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:20:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:17,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:20:17,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:17,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:20:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:17,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:17,972 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:17,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163410573] [2021-11-19 13:20:17,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163410573] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:17,973 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:17,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:20:17,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906562693] [2021-11-19 13:20:17,974 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:17,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:20:17,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:17,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:20:17,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:20:17,975 INFO L87 Difference]: Start difference. First operand 2247 states and 2602 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-19 13:20:38,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:38,998 INFO L93 Difference]: Finished difference Result 4238 states and 4664 transitions. [2021-11-19 13:20:39,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:20:39,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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 36 [2021-11-19 13:20:39,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:39,010 INFO L225 Difference]: With dead ends: 4238 [2021-11-19 13:20:39,011 INFO L226 Difference]: Without dead ends: 4238 [2021-11-19 13:20:39,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:20:39,012 INFO L933 BasicCegarLoop]: 2733 mSDtfsCounter, 2995 mSDsluCounter, 5218 mSDsCounter, 0 mSdLazyCounter, 5330 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3000 SdHoareTripleChecker+Valid, 7951 SdHoareTripleChecker+Invalid, 5354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:39,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3000 Valid, 7951 Invalid, 5354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 5330 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2021-11-19 13:20:39,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4238 states. [2021-11-19 13:20:39,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4238 to 2243. [2021-11-19 13:20:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2243 states, 1400 states have (on average 1.832857142857143) internal successors, (2566), 2227 states have internal predecessors, (2566), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:20:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 2598 transitions. [2021-11-19 13:20:39,062 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 2598 transitions. Word has length 36 [2021-11-19 13:20:39,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:39,062 INFO L470 AbstractCegarLoop]: Abstraction has 2243 states and 2598 transitions. [2021-11-19 13:20:39,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-19 13:20:39,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 2598 transitions. [2021-11-19 13:20:39,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 13:20:39,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:39,064 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] [2021-11-19 13:20:39,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:39,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:39,278 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:20:39,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:39,279 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times [2021-11-19 13:20:39,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:39,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428697956] [2021-11-19 13:20:39,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:39,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:39,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:39,282 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:39,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:20:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:39,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:20:39,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:39,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:20:39,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:39,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:39,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:39,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428697956] [2021-11-19 13:20:39,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428697956] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:39,853 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:39,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:20:39,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876809103] [2021-11-19 13:20:39,854 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:39,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:20:39,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:39,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:20:39,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:20:39,855 INFO L87 Difference]: Start difference. First operand 2243 states and 2598 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-19 13:20:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:20:47,993 INFO L93 Difference]: Finished difference Result 4691 states and 5257 transitions. [2021-11-19 13:20:47,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:20:47,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2021-11-19 13:20:47,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:20:48,002 INFO L225 Difference]: With dead ends: 4691 [2021-11-19 13:20:48,002 INFO L226 Difference]: Without dead ends: 4691 [2021-11-19 13:20:48,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:20:48,003 INFO L933 BasicCegarLoop]: 2250 mSDtfsCounter, 4653 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:20:48,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4663 Valid, 4546 Invalid, 3016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2965 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-19 13:20:48,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2021-11-19 13:20:48,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 2240. [2021-11-19 13:20:48,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 1400 states have (on average 1.825) internal successors, (2555), 2224 states have internal predecessors, (2555), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:20:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 2587 transitions. [2021-11-19 13:20:48,082 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 2587 transitions. Word has length 36 [2021-11-19 13:20:48,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:20:48,084 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 2587 transitions. [2021-11-19 13:20:48,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-19 13:20:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 2587 transitions. [2021-11-19 13:20:48,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 13:20:48,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:20:48,085 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] [2021-11-19 13:20:48,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:20:48,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:20:48,300 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:20:48,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:20:48,301 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times [2021-11-19 13:20:48,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:20:48,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669307024] [2021-11-19 13:20:48,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:20:48,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:20:48,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:20:48,304 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:20:48,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 13:20:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:20:48,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:20:48,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:20:48,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:20:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:48,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:20:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:20:49,490 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:20:49,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669307024] [2021-11-19 13:20:49,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669307024] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:20:49,490 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:20:49,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:20:49,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024471100] [2021-11-19 13:20:49,491 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:20:49,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:20:49,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:20:49,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:20:49,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:20:49,492 INFO L87 Difference]: Start difference. First operand 2240 states and 2587 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-19 13:21:14,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:14,960 INFO L93 Difference]: Finished difference Result 4636 states and 5142 transitions. [2021-11-19 13:21:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:21:14,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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 36 [2021-11-19 13:21:14,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:14,972 INFO L225 Difference]: With dead ends: 4636 [2021-11-19 13:21:14,973 INFO L226 Difference]: Without dead ends: 4636 [2021-11-19 13:21:14,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:21:14,974 INFO L933 BasicCegarLoop]: 2511 mSDtfsCounter, 4787 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 4588 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4792 SdHoareTripleChecker+Valid, 7001 SdHoareTripleChecker+Invalid, 4617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:14,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4792 Valid, 7001 Invalid, 4617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4588 Invalid, 0 Unknown, 0 Unchecked, 25.2s Time] [2021-11-19 13:21:14,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-11-19 13:21:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 2240. [2021-11-19 13:21:15,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 1400 states have (on average 1.822142857142857) internal successors, (2551), 2224 states have internal predecessors, (2551), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:21:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 2583 transitions. [2021-11-19 13:21:15,026 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 2583 transitions. Word has length 36 [2021-11-19 13:21:15,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:15,027 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 2583 transitions. [2021-11-19 13:21:15,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-19 13:21:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 2583 transitions. [2021-11-19 13:21:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 13:21:15,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:15,029 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] [2021-11-19 13:21:15,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 13:21:15,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:15,243 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:21:15,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:15,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1782356879, now seen corresponding path program 1 times [2021-11-19 13:21:15,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:15,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859398943] [2021-11-19 13:21:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:15,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:15,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:15,246 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:15,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 13:21:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:15,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:21:15,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:15,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:15,713 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:15,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859398943] [2021-11-19 13:21:15,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859398943] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:15,714 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:15,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:21:15,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753701851] [2021-11-19 13:21:15,715 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:15,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:21:15,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:15,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:21:15,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:21:15,717 INFO L87 Difference]: Start difference. First operand 2240 states and 2583 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-11-19 13:21:15,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:15,787 INFO L93 Difference]: Finished difference Result 2234 states and 2569 transitions. [2021-11-19 13:21:15,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:21:15,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 40 [2021-11-19 13:21:15,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:15,792 INFO L225 Difference]: With dead ends: 2234 [2021-11-19 13:21:15,793 INFO L226 Difference]: Without dead ends: 2234 [2021-11-19 13:21:15,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:21:15,794 INFO L933 BasicCegarLoop]: 1995 mSDtfsCounter, 959 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 5013 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:15,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 5013 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:21:15,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-11-19 13:21:15,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2234. [2021-11-19 13:21:15,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2234 states, 1394 states have (on average 1.8199426111908177) internal successors, (2537), 2218 states have internal predecessors, (2537), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 13:21:15,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 2569 transitions. [2021-11-19 13:21:15,830 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 2569 transitions. Word has length 40 [2021-11-19 13:21:15,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:15,831 INFO L470 AbstractCegarLoop]: Abstraction has 2234 states and 2569 transitions. [2021-11-19 13:21:15,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-11-19 13:21:15,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 2569 transitions. [2021-11-19 13:21:15,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-19 13:21:15,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:15,833 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, 1, 1] [2021-11-19 13:21:15,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:16,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:16,048 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:21:16,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:16,049 INFO L85 PathProgramCache]: Analyzing trace with hash -263031357, now seen corresponding path program 1 times [2021-11-19 13:21:16,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:16,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318526164] [2021-11-19 13:21:16,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:16,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:16,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:16,051 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:16,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 13:21:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:16,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:21:16,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:16,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:16,971 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:16,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318526164] [2021-11-19 13:21:16,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318526164] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:16,971 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:16,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:21:16,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517610616] [2021-11-19 13:21:16,972 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:16,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:21:16,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:16,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:21:16,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:21:16,973 INFO L87 Difference]: Start difference. First operand 2234 states and 2569 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-19 13:21:17,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:17,313 INFO L93 Difference]: Finished difference Result 3574 states and 4035 transitions. [2021-11-19 13:21:17,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:21:17,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-19 13:21:17,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:17,317 INFO L225 Difference]: With dead ends: 3574 [2021-11-19 13:21:17,318 INFO L226 Difference]: Without dead ends: 3574 [2021-11-19 13:21:17,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:21:17,319 INFO L933 BasicCegarLoop]: 2084 mSDtfsCounter, 1378 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 3926 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:17,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1387 Valid, 3926 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:21:17,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2021-11-19 13:21:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 2953. [2021-11-19 13:21:17,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2953 states, 2109 states have (on average 1.7946894262683737) internal successors, (3785), 2930 states have internal predecessors, (3785), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-19 13:21:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 3831 transitions. [2021-11-19 13:21:17,372 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 3831 transitions. Word has length 48 [2021-11-19 13:21:17,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:17,372 INFO L470 AbstractCegarLoop]: Abstraction has 2953 states and 3831 transitions. [2021-11-19 13:21:17,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-19 13:21:17,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 3831 transitions. [2021-11-19 13:21:17,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-19 13:21:17,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:17,374 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, 1, 1, 1, 1, 1] [2021-11-19 13:21:17,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:17,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:17,584 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:21:17,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash -435335443, now seen corresponding path program 1 times [2021-11-19 13:21:17,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:17,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120533306] [2021-11-19 13:21:17,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:17,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:17,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:17,586 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:17,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 13:21:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:17,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:21:17,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:17,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:18,128 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:18,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120533306] [2021-11-19 13:21:18,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120533306] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:18,128 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:18,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:21:18,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060885911] [2021-11-19 13:21:18,129 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:18,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:21:18,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:18,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:21:18,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:21:18,131 INFO L87 Difference]: Start difference. First operand 2953 states and 3831 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-11-19 13:21:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:18,218 INFO L93 Difference]: Finished difference Result 4103 states and 5047 transitions. [2021-11-19 13:21:18,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:21:18,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2021-11-19 13:21:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:18,224 INFO L225 Difference]: With dead ends: 4103 [2021-11-19 13:21:18,224 INFO L226 Difference]: Without dead ends: 4103 [2021-11-19 13:21:18,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:21:18,225 INFO L933 BasicCegarLoop]: 3270 mSDtfsCounter, 1953 mSDsluCounter, 4567 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 7837 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:18,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1963 Valid, 7837 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:21:18,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2021-11-19 13:21:18,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 2929. [2021-11-19 13:21:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2085 states have (on average 1.7961630695443644) internal successors, (3745), 2906 states have internal predecessors, (3745), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-19 13:21:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 3791 transitions. [2021-11-19 13:21:18,288 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 3791 transitions. Word has length 51 [2021-11-19 13:21:18,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:18,288 INFO L470 AbstractCegarLoop]: Abstraction has 2929 states and 3791 transitions. [2021-11-19 13:21:18,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-11-19 13:21:18,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 3791 transitions. [2021-11-19 13:21:18,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-19 13:21:18,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:18,290 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:18,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:18,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:18,504 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:21:18,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:18,504 INFO L85 PathProgramCache]: Analyzing trace with hash -273786554, now seen corresponding path program 1 times [2021-11-19 13:21:18,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:18,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497854678] [2021-11-19 13:21:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:18,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:18,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:18,508 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:18,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 13:21:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:18,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:21:18,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:19,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:19,183 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:19,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497854678] [2021-11-19 13:21:19,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497854678] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:19,183 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:19,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:21:19,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368760116] [2021-11-19 13:21:19,184 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:19,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:21:19,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:19,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:21:19,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:21:19,185 INFO L87 Difference]: Start difference. First operand 2929 states and 3791 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:21:19,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:19,293 INFO L93 Difference]: Finished difference Result 3848 states and 4545 transitions. [2021-11-19 13:21:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:21:19,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-19 13:21:19,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:19,300 INFO L225 Difference]: With dead ends: 3848 [2021-11-19 13:21:19,300 INFO L226 Difference]: Without dead ends: 3848 [2021-11-19 13:21:19,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:21:19,302 INFO L933 BasicCegarLoop]: 3311 mSDtfsCounter, 1944 mSDsluCounter, 4658 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 7969 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:19,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 7969 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:21:19,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3848 states. [2021-11-19 13:21:19,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3848 to 2917. [2021-11-19 13:21:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2073 states have (on average 1.7969126869271588) internal successors, (3725), 2894 states have internal predecessors, (3725), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-19 13:21:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3771 transitions. [2021-11-19 13:21:19,389 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3771 transitions. Word has length 54 [2021-11-19 13:21:19,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:19,390 INFO L470 AbstractCegarLoop]: Abstraction has 2917 states and 3771 transitions. [2021-11-19 13:21:19,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:21:19,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3771 transitions. [2021-11-19 13:21:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-19 13:21:19,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:19,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:19,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:19,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:19,605 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:21:19,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash -665468730, now seen corresponding path program 1 times [2021-11-19 13:21:19,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:19,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039327714] [2021-11-19 13:21:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:19,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:19,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:19,608 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:19,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 13:21:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:19,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:21:19,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:19,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:21:19,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:21:19,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 13:21:19,957 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 13:21:19,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 13:21:20,028 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 13:21:20,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-19 13:21:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:20,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:20,304 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:20,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039327714] [2021-11-19 13:21:20,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039327714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:20,305 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:20,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:21:20,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879958123] [2021-11-19 13:21:20,305 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:20,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:21:20,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:20,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:21:20,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:21:20,308 INFO L87 Difference]: Start difference. First operand 2917 states and 3771 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:21:24,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:24,550 INFO L93 Difference]: Finished difference Result 3022 states and 3882 transitions. [2021-11-19 13:21:24,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:21:24,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-19 13:21:24,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:24,555 INFO L225 Difference]: With dead ends: 3022 [2021-11-19 13:21:24,555 INFO L226 Difference]: Without dead ends: 3022 [2021-11-19 13:21:24,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:21:24,556 INFO L933 BasicCegarLoop]: 1886 mSDtfsCounter, 903 mSDsluCounter, 6545 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 8431 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:24,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 8431 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-19 13:21:24,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2021-11-19 13:21:24,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 2883. [2021-11-19 13:21:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2883 states, 2039 states have (on average 1.8097106424718) internal successors, (3690), 2860 states have internal predecessors, (3690), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-19 13:21:24,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 3736 transitions. [2021-11-19 13:21:24,609 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 3736 transitions. Word has length 57 [2021-11-19 13:21:24,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:24,610 INFO L470 AbstractCegarLoop]: Abstraction has 2883 states and 3736 transitions. [2021-11-19 13:21:24,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:21:24,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 3736 transitions. [2021-11-19 13:21:24,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 13:21:24,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:24,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:24,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:24,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:24,829 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:21:24,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:24,830 INFO L85 PathProgramCache]: Analyzing trace with hash 122106401, now seen corresponding path program 1 times [2021-11-19 13:21:24,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:24,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489724362] [2021-11-19 13:21:24,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:24,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:24,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:24,834 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:24,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 13:21:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:25,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:21:25,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:25,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:26,223 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:26,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489724362] [2021-11-19 13:21:26,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489724362] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:26,223 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:26,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 13:21:26,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966909940] [2021-11-19 13:21:26,224 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:26,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:21:26,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:26,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:21:26,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:21:26,226 INFO L87 Difference]: Start difference. First operand 2883 states and 3736 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-19 13:21:26,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:26,436 INFO L93 Difference]: Finished difference Result 4147 states and 5185 transitions. [2021-11-19 13:21:26,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:21:26,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-19 13:21:26,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:26,448 INFO L225 Difference]: With dead ends: 4147 [2021-11-19 13:21:26,448 INFO L226 Difference]: Without dead ends: 4147 [2021-11-19 13:21:26,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:21:26,449 INFO L933 BasicCegarLoop]: 2356 mSDtfsCounter, 1075 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 4227 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:26,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1083 Valid, 4227 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:21:26,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4147 states. [2021-11-19 13:21:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4147 to 3606. [2021-11-19 13:21:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 2758 states have (on average 1.777012327773749) internal successors, (4901), 3576 states have internal predecessors, (4901), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-19 13:21:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 4961 transitions. [2021-11-19 13:21:26,521 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 4961 transitions. Word has length 59 [2021-11-19 13:21:26,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:26,522 INFO L470 AbstractCegarLoop]: Abstraction has 3606 states and 4961 transitions. [2021-11-19 13:21:26,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-19 13:21:26,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 4961 transitions. [2021-11-19 13:21:26,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 13:21:26,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:26,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:26,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-19 13:21:26,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:26,739 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:21:26,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:26,740 INFO L85 PathProgramCache]: Analyzing trace with hash -45497454, now seen corresponding path program 1 times [2021-11-19 13:21:26,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:26,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290935643] [2021-11-19 13:21:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:26,742 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:26,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:26,743 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:26,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 13:21:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:27,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:21:27,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:27,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:21:27,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:21:28,150 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 13:21:28,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-19 13:21:28,158 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:21:28,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-19 13:21:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:28,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:33,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:33,826 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:33,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290935643] [2021-11-19 13:21:33,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290935643] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:33,826 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:33,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:21:33,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339539597] [2021-11-19 13:21:33,827 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:33,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:21:33,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:33,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:21:33,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 13:21:33,829 INFO L87 Difference]: Start difference. First operand 3606 states and 4961 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-19 13:21:49,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:49,053 INFO L93 Difference]: Finished difference Result 7022 states and 9543 transitions. [2021-11-19 13:21:49,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:21:49,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-19 13:21:49,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:49,061 INFO L225 Difference]: With dead ends: 7022 [2021-11-19 13:21:49,061 INFO L226 Difference]: Without dead ends: 7022 [2021-11-19 13:21:49,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-19 13:21:49,062 INFO L933 BasicCegarLoop]: 1172 mSDtfsCounter, 2804 mSDsluCounter, 3339 mSDsCounter, 0 mSdLazyCounter, 3283 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2819 SdHoareTripleChecker+Valid, 4511 SdHoareTripleChecker+Invalid, 6991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 3283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3633 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:49,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2819 Valid, 4511 Invalid, 6991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 3283 Invalid, 0 Unknown, 3633 Unchecked, 15.0s Time] [2021-11-19 13:21:49,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7022 states. [2021-11-19 13:21:49,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7022 to 3733. [2021-11-19 13:21:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 2917 states have (on average 1.750771340418238) internal successors, (5107), 3700 states have internal predecessors, (5107), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 13:21:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5173 transitions. [2021-11-19 13:21:49,176 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5173 transitions. Word has length 62 [2021-11-19 13:21:49,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:49,176 INFO L470 AbstractCegarLoop]: Abstraction has 3733 states and 5173 transitions. [2021-11-19 13:21:49,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-19 13:21:49,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5173 transitions. [2021-11-19 13:21:49,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 13:21:49,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:49,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:49,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:49,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:49,393 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:21:49,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:49,393 INFO L85 PathProgramCache]: Analyzing trace with hash -773371597, now seen corresponding path program 1 times [2021-11-19 13:21:49,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:49,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866167788] [2021-11-19 13:21:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:49,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:49,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:49,395 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:49,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 13:21:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:49,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:21:49,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:49,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:49,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-19 13:21:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:50,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:50,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866167788] [2021-11-19 13:21:50,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866167788] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:50,175 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:50,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 13:21:50,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954938682] [2021-11-19 13:21:50,175 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:50,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:21:50,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:50,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:21:50,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:21:50,177 INFO L87 Difference]: Start difference. First operand 3733 states and 5173 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 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) [2021-11-19 13:21:53,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:21:53,472 INFO L93 Difference]: Finished difference Result 3731 states and 5169 transitions. [2021-11-19 13:21:53,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:21:53,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 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 64 [2021-11-19 13:21:53,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:21:53,488 INFO L225 Difference]: With dead ends: 3731 [2021-11-19 13:21:53,488 INFO L226 Difference]: Without dead ends: 3731 [2021-11-19 13:21:53,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:21:53,489 INFO L933 BasicCegarLoop]: 1176 mSDtfsCounter, 4975 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4985 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:21:53,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4985 Valid, 1670 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 13:21:53,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2021-11-19 13:21:53,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3731. [2021-11-19 13:21:53,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3731 states, 2917 states have (on average 1.7494000685635926) internal successors, (5103), 3698 states have internal predecessors, (5103), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 13:21:53,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 5169 transitions. [2021-11-19 13:21:53,542 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 5169 transitions. Word has length 64 [2021-11-19 13:21:53,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:21:53,543 INFO L470 AbstractCegarLoop]: Abstraction has 3731 states and 5169 transitions. [2021-11-19 13:21:53,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 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) [2021-11-19 13:21:53,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 5169 transitions. [2021-11-19 13:21:53,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 13:21:53,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:21:53,544 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:21:53,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 13:21:53,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:21:53,757 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:21:53,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:21:53,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391416, now seen corresponding path program 1 times [2021-11-19 13:21:53,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:21:53,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014404733] [2021-11-19 13:21:53,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:21:53,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:21:53,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:21:53,759 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:21:53,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 13:21:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:21:54,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:21:54,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:21:54,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:21:54,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 13:21:54,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 13:21:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:54,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:21:54,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:21:54,377 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:21:54,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014404733] [2021-11-19 13:21:54,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014404733] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:21:54,378 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:21:54,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:21:54,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902873182] [2021-11-19 13:21:54,378 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:21:54,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:21:54,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:21:54,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:21:54,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:21:54,379 INFO L87 Difference]: Start difference. First operand 3731 states and 5169 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:22:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:00,383 INFO L93 Difference]: Finished difference Result 3730 states and 5167 transitions. [2021-11-19 13:22:00,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:22:00,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-19 13:22:00,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:00,388 INFO L225 Difference]: With dead ends: 3730 [2021-11-19 13:22:00,389 INFO L226 Difference]: Without dead ends: 3730 [2021-11-19 13:22:00,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:22:00,390 INFO L933 BasicCegarLoop]: 1964 mSDtfsCounter, 4 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 2645 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5216 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:00,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5216 Invalid, 2646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2645 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-19 13:22:00,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3730 states. [2021-11-19 13:22:00,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3730 to 3730. [2021-11-19 13:22:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 2917 states have (on average 1.7487144326362702) internal successors, (5101), 3697 states have internal predecessors, (5101), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 13:22:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5167 transitions. [2021-11-19 13:22:00,435 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5167 transitions. Word has length 67 [2021-11-19 13:22:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:00,435 INFO L470 AbstractCegarLoop]: Abstraction has 3730 states and 5167 transitions. [2021-11-19 13:22:00,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:22:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5167 transitions. [2021-11-19 13:22:00,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 13:22:00,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:00,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:00,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-11-19 13:22:00,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:00,668 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:22:00,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:00,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391415, now seen corresponding path program 1 times [2021-11-19 13:22:00,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:00,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211549625] [2021-11-19 13:22:00,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:00,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:00,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:00,671 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:00,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-19 13:22:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:00,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:22:00,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:01,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:22:01,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 13:22:01,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 13:22:01,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 13:22:01,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 13:22:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:01,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:01,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:01,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211549625] [2021-11-19 13:22:01,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211549625] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:01,498 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:01,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 13:22:01,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126848277] [2021-11-19 13:22:01,499 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:01,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:22:01,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:01,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:22:01,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:22:01,500 INFO L87 Difference]: Start difference. First operand 3730 states and 5167 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-19 13:22:22,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:22,517 INFO L93 Difference]: Finished difference Result 3729 states and 5165 transitions. [2021-11-19 13:22:22,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:22:22,518 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-19 13:22:22,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:22,522 INFO L225 Difference]: With dead ends: 3729 [2021-11-19 13:22:22,523 INFO L226 Difference]: Without dead ends: 3729 [2021-11-19 13:22:22,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:22:22,523 INFO L933 BasicCegarLoop]: 1964 mSDtfsCounter, 2 mSDsluCounter, 6354 mSDsCounter, 0 mSdLazyCounter, 5433 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8318 SdHoareTripleChecker+Invalid, 5434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:22,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 8318 Invalid, 5434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5433 Invalid, 0 Unknown, 0 Unchecked, 20.8s Time] [2021-11-19 13:22:22,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2021-11-19 13:22:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3729. [2021-11-19 13:22:22,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3729 states, 2915 states have (on average 1.7492281303602057) internal successors, (5099), 3696 states have internal predecessors, (5099), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 13:22:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3729 states to 3729 states and 5165 transitions. [2021-11-19 13:22:22,573 INFO L78 Accepts]: Start accepts. Automaton has 3729 states and 5165 transitions. Word has length 67 [2021-11-19 13:22:22,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:22,573 INFO L470 AbstractCegarLoop]: Abstraction has 3729 states and 5165 transitions. [2021-11-19 13:22:22,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-19 13:22:22,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3729 states and 5165 transitions. [2021-11-19 13:22:22,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 13:22:22,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:22,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:22,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:22,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:22,788 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:22:22,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:22,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564532, now seen corresponding path program 1 times [2021-11-19 13:22:22,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:22,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753439707] [2021-11-19 13:22:22,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:22,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:22,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:22,790 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:22,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 13:22:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:23,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:22:23,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:23,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:22:23,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-19 13:22:23,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 13:22:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:23,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:23,370 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:23,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753439707] [2021-11-19 13:22:23,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753439707] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:23,370 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:23,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:22:23,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660932958] [2021-11-19 13:22:23,371 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:23,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:22:23,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:23,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:22:23,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:22:23,372 INFO L87 Difference]: Start difference. First operand 3729 states and 5165 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:22:29,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:29,028 INFO L93 Difference]: Finished difference Result 3728 states and 5161 transitions. [2021-11-19 13:22:29,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:22:29,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-19 13:22:29,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:29,033 INFO L225 Difference]: With dead ends: 3728 [2021-11-19 13:22:29,033 INFO L226 Difference]: Without dead ends: 3728 [2021-11-19 13:22:29,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:22:29,034 INFO L933 BasicCegarLoop]: 1960 mSDtfsCounter, 7 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5204 SdHoareTripleChecker+Invalid, 2647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:29,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5204 Invalid, 2647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-19 13:22:29,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2021-11-19 13:22:29,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 3728. [2021-11-19 13:22:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 2915 states have (on average 1.7478559176672384) internal successors, (5095), 3695 states have internal predecessors, (5095), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 13:22:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 5161 transitions. [2021-11-19 13:22:29,071 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 5161 transitions. Word has length 67 [2021-11-19 13:22:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:29,071 INFO L470 AbstractCegarLoop]: Abstraction has 3728 states and 5161 transitions. [2021-11-19 13:22:29,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:22:29,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 5161 transitions. [2021-11-19 13:22:29,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 13:22:29,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:29,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:29,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:29,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:29,273 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:22:29,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:29,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564533, now seen corresponding path program 1 times [2021-11-19 13:22:29,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:29,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216849763] [2021-11-19 13:22:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:29,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:29,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:29,275 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:29,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-19 13:22:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:29,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:22:29,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:29,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:22:29,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 13:22:29,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-19 13:22:29,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-19 13:22:29,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-19 13:22:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:29,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:30,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:30,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216849763] [2021-11-19 13:22:30,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216849763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:30,004 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:30,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 13:22:30,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415009636] [2021-11-19 13:22:30,004 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:30,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:22:30,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:30,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:22:30,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:22:30,005 INFO L87 Difference]: Start difference. First operand 3728 states and 5161 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-19 13:22:50,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:50,341 INFO L93 Difference]: Finished difference Result 3727 states and 5157 transitions. [2021-11-19 13:22:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:22:50,342 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-19 13:22:50,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:50,345 INFO L225 Difference]: With dead ends: 3727 [2021-11-19 13:22:50,345 INFO L226 Difference]: Without dead ends: 3727 [2021-11-19 13:22:50,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:22:50,346 INFO L933 BasicCegarLoop]: 1959 mSDtfsCounter, 5 mSDsluCounter, 6348 mSDsCounter, 0 mSdLazyCounter, 5424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8307 SdHoareTripleChecker+Invalid, 5425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:50,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 8307 Invalid, 5425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5424 Invalid, 0 Unknown, 0 Unchecked, 20.2s Time] [2021-11-19 13:22:50,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2021-11-19 13:22:50,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 3727. [2021-11-19 13:22:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 2911 states have (on average 1.7488835451734799) internal successors, (5091), 3694 states have internal predecessors, (5091), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 13:22:50,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5157 transitions. [2021-11-19 13:22:50,387 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5157 transitions. Word has length 67 [2021-11-19 13:22:50,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:50,387 INFO L470 AbstractCegarLoop]: Abstraction has 3727 states and 5157 transitions. [2021-11-19 13:22:50,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-19 13:22:50,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5157 transitions. [2021-11-19 13:22:50,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 13:22:50,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:50,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:50,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:50,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:50,592 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:22:50,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:50,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1448028751, now seen corresponding path program 1 times [2021-11-19 13:22:50,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:50,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964189015] [2021-11-19 13:22:50,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:50,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:50,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:50,594 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:50,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-19 13:22:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:50,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:22:50,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:51,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:51,195 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:51,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964189015] [2021-11-19 13:22:51,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964189015] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:22:51,195 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:22:51,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:22:51,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229729419] [2021-11-19 13:22:51,196 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:22:51,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:22:51,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:51,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:22:51,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:22:51,197 INFO L87 Difference]: Start difference. First operand 3727 states and 5157 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:22:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:51,336 INFO L93 Difference]: Finished difference Result 3737 states and 5174 transitions. [2021-11-19 13:22:51,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:22:51,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 75 [2021-11-19 13:22:51,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:51,345 INFO L225 Difference]: With dead ends: 3737 [2021-11-19 13:22:51,346 INFO L226 Difference]: Without dead ends: 3737 [2021-11-19 13:22:51,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:22:51,347 INFO L933 BasicCegarLoop]: 1960 mSDtfsCounter, 11 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:51,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3919 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:22:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-11-19 13:22:51,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3737. [2021-11-19 13:22:51,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 2919 states have (on average 1.7482014388489209) internal successors, (5103), 3703 states have internal predecessors, (5103), 33 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (38), 30 states have call predecessors, (38), 33 states have call successors, (38) [2021-11-19 13:22:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 5174 transitions. [2021-11-19 13:22:51,408 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 5174 transitions. Word has length 75 [2021-11-19 13:22:51,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:51,409 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 5174 transitions. [2021-11-19 13:22:51,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 13:22:51,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 5174 transitions. [2021-11-19 13:22:51,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 13:22:51,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:51,411 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-11-19 13:22:51,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:51,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:22:51,625 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:22:51,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:51,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1921538705, now seen corresponding path program 1 times [2021-11-19 13:22:51,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:51,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856874391] [2021-11-19 13:22:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:51,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:51,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:51,627 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:51,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-19 13:22:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:51,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:22:51,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:52,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:52,289 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:52,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856874391] [2021-11-19 13:22:52,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856874391] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:52,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1855512292] [2021-11-19 13:22:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:52,289 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:52,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:22:52,290 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:22:52,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-19 13:22:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:52,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:22:52,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:52,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:52,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1855512292] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:52,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471778782] [2021-11-19 13:22:52,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:22:52,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:22:52,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:22:52,972 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:22:52,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-19 13:22:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:22:53,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:22:53,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:53,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:53,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471778782] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:53,589 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:22:53,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 13:22:53,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89230108] [2021-11-19 13:22:53,589 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:22:53,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:22:53,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:22:53,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:22:53,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:22:53,591 INFO L87 Difference]: Start difference. First operand 3737 states and 5174 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 13:22:54,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:22:54,173 INFO L93 Difference]: Finished difference Result 3751 states and 5195 transitions. [2021-11-19 13:22:54,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:22:54,174 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-19 13:22:54,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:22:54,187 INFO L225 Difference]: With dead ends: 3751 [2021-11-19 13:22:54,187 INFO L226 Difference]: Without dead ends: 3745 [2021-11-19 13:22:54,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:22:54,189 INFO L933 BasicCegarLoop]: 1960 mSDtfsCounter, 43 mSDsluCounter, 5873 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 7833 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:22:54,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 7833 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:22:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2021-11-19 13:22:54,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 3743. [2021-11-19 13:22:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3743 states, 2925 states have (on average 1.747008547008547) internal successors, (5110), 3709 states have internal predecessors, (5110), 33 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (38), 30 states have call predecessors, (38), 33 states have call successors, (38) [2021-11-19 13:22:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 5181 transitions. [2021-11-19 13:22:54,296 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 5181 transitions. Word has length 77 [2021-11-19 13:22:54,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:22:54,297 INFO L470 AbstractCegarLoop]: Abstraction has 3743 states and 5181 transitions. [2021-11-19 13:22:54,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 13:22:54,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 5181 transitions. [2021-11-19 13:22:54,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-19 13:22:54,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:22:54,305 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:22:54,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:54,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:54,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-19 13:22:54,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:22:54,909 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1091 more)] === [2021-11-19 13:22:54,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:22:54,910 INFO L85 PathProgramCache]: Analyzing trace with hash -962346065, now seen corresponding path program 2 times [2021-11-19 13:22:54,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:22:54,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47927439] [2021-11-19 13:22:54,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:22:54,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:22:54,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:22:54,912 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:22:54,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-19 13:22:55,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:22:55,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:22:55,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:22:55,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:55,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:56,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:22:56,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47927439] [2021-11-19 13:22:56,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47927439] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:56,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1634009533] [2021-11-19 13:22:56,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:22:56,151 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:22:56,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:22:56,152 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:22:56,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-19 13:22:57,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:22:57,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:22:57,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:22:57,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:22:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:57,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:22:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:22:57,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1634009533] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:22:57,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824727574] [2021-11-19 13:22:57,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:22:57,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:22:57,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:22:57,631 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:22:57,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8dca333e-279a-4dc0-9307-a721a6c14566/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-19 13:23:11,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:23:11,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:23:11,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:23:11,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:23:11,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 13:23:11,703 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 13:23:11,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-19 13:23:11,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 13:24:51,655 WARN L227 SmtUtils]: Spent 13.87s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:24:51,656 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-19 13:24:51,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 79 [2021-11-19 13:24:52,306 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-19 13:24:52,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 125 treesize of output 38 [2021-11-19 13:24:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:24:52,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:24:54,042 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-19 13:24:54,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2021-11-19 13:25:30,756 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr499| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr499|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))) (_ bv1 1))))) is different from false [2021-11-19 13:29:28,448 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-19 13:29:28,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 111 [2021-11-19 13:29:32,346 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_#Ultimate.C_memset_#t~loopctr499_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_116| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr499| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_114| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_112| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr499|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) is different from false [2021-11-19 13:29:46,113 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 15 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-19 13:29:46,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824727574] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:29:46,114 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:29:46,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 15, 15] total 45 [2021-11-19 13:29:46,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473619308] [2021-11-19 13:29:46,114 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:29:46,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-19 13:29:46,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:29:46,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-19 13:29:46,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1483, Unknown=166, NotChecked=166, Total=1980 [2021-11-19 13:29:46,117 INFO L87 Difference]: Start difference. First operand 3743 states and 5181 transitions. Second operand has 45 states, 43 states have (on average 5.511627906976744) internal successors, (237), 43 states have internal predecessors, (237), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 13:29:51,561 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_#Ultimate.C_memset_#t~loopctr499_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_116| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr499| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_120| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_114| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_112| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= |c_#Ultimate.C_memset_#ptr.base| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr499|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_120| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_118| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_116| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_114| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_112| |#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-19 13:31:26,469 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr499_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_#Ultimate.C_memset_#t~loopctr499_118| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_116| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr499| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_112| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr499|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr499_118|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr499_116|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr499_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr499_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))))))) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))))) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr499| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr499|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))) (_ bv1 1))))) (= (_ bv1 32) |c_#Ultimate.C_memset_#t~loopctr499|)) is different from false [2021-11-19 13:32:01,712 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr499_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr499| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr499|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))) (_ bv1 1))))) (= (_ bv1 32) |c_#Ultimate.C_memset_#t~loopctr499|)) is different from false [2021-11-19 13:32:03,726 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv2 32) |c_#Ultimate.C_memset_#t~loopctr499|) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr499_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (_ bv1 1))))) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_116| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr499| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_114| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_112| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr499|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr499_116|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr499_114|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr499_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))))))) (_ bv1 1)))))) is different from false [2021-11-19 13:32:05,746 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv2 32) |c_#Ultimate.C_memset_#t~loopctr499|) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr499_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_83| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))) (_ bv1 1)))))) is different from false [2021-11-19 13:32:30,075 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr499_85| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_86| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_85| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_86| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= (_ bv4 32) |c_#Ultimate.C_memset_#t~loopctr499|) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr499| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_112| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr499|) (_ bv0 32)) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |v_#Ultimate.C_memset_#t~loopctr499_112|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))))))))))) (_ bv1 1))) (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|)))))) is different from false [2021-11-19 13:32:32,094 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_#Ultimate.C_memset_#ptr.base|)) (_ bv1 1))) (= (_ bv5 32) |c_#Ultimate.C_memset_#t~loopctr499|) (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr499| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr499_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_103| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_109| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_108| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_107| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_103| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_105| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_104| |v_#Ultimate.C_memset_#ptr.offset_18|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)) |c_#Ultimate.C_memset_#ptr.base|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr499|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))))))) (_ bv1 1))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr499_85| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_84| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_83| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_87| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr499_86| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_83| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_84| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_85| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_86| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_#Ultimate.C_memset_#t~loopctr499_87| |c_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false