./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/s3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/s3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22366af6514966a73d28a63d2bc4f38bf02b60e4 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/s3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22366af6514966a73d28a63d2bc4f38bf02b60e4 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:33:59,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:33:59,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:33:59,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:33:59,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:33:59,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:33:59,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:33:59,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:33:59,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:33:59,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:33:59,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:33:59,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:33:59,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:33:59,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:33:59,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:33:59,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:33:59,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:33:59,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:33:59,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:33:59,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:33:59,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:33:59,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:33:59,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:33:59,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:33:59,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:33:59,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:33:59,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:33:59,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:33:59,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:33:59,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:33:59,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:33:59,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:33:59,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:33:59,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:33:59,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:33:59,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:33:59,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:33:59,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:33:59,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:33:59,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:33:59,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:33:59,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:33:59,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:33:59,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:33:59,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:33:59,465 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:33:59,466 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:33:59,466 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:33:59,466 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:33:59,467 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:33:59,473 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:33:59,473 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:33:59,474 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:33:59,474 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:33:59,475 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:33:59,475 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:33:59,475 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:33:59,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:33:59,476 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:33:59,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:33:59,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:33:59,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:33:59,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:33:59,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:33:59,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:33:59,478 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:33:59,479 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:33:59,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:33:59,479 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:33:59,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:33:59,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:33:59,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:33:59,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:33:59,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:33:59,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:33:59,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:33:59,483 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:33:59,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:33:59,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:33:59,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:33:59,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:33:59,484 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_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22366af6514966a73d28a63d2bc4f38bf02b60e4 [2021-10-16 02:33:59,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:33:59,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:33:59,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:33:59,794 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:33:59,795 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:33:59,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loops/s3.i [2021-10-16 02:33:59,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/data/799c168ad/a0fd5496462049869f5eeddb99877ba3/FLAGe9094fb39 [2021-10-16 02:34:00,439 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:34:00,444 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/sv-benchmarks/c/loops/s3.i [2021-10-16 02:34:00,482 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/data/799c168ad/a0fd5496462049869f5eeddb99877ba3/FLAGe9094fb39 [2021-10-16 02:34:00,686 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/data/799c168ad/a0fd5496462049869f5eeddb99877ba3 [2021-10-16 02:34:00,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:34:00,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:34:00,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:34:00,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:34:00,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:34:00,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:34:00" (1/1) ... [2021-10-16 02:34:00,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d128ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:00, skipping insertion in model container [2021-10-16 02:34:00,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:34:00" (1/1) ... [2021-10-16 02:34:00,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:34:00,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:34:01,202 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-10-16 02:34:01,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:34:01,228 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) [2021-10-16 02:34:01,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@319c5fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:01, skipping insertion in model container [2021-10-16 02:34:01,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:34:01,229 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-16 02:34:01,231 INFO L168 Benchmark]: Toolchain (without parser) took 540.36 ms. Allocated memory is still 98.6 MB. Free memory was 56.3 MB in the beginning and 66.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:01,231 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 98.6 MB. Free memory is still 74.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:34:01,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.89 ms. Allocated memory is still 98.6 MB. Free memory was 56.1 MB in the beginning and 66.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:01,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 98.6 MB. Free memory is still 74.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 537.89 ms. Allocated memory is still 98.6 MB. Free memory was 56.1 MB in the beginning and 66.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1038]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:34:03,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:34:03,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:34:03,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:34:03,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:34:03,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:34:03,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:34:03,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:34:03,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:34:03,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:34:03,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:34:03,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:34:03,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:34:03,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:34:03,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:34:03,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:34:03,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:34:03,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:34:03,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:34:03,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:34:03,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:34:03,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:34:03,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:34:03,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:34:03,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:34:03,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:34:03,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:34:03,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:34:03,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:34:03,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:34:03,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:34:03,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:34:03,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:34:03,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:34:03,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:34:03,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:34:03,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:34:03,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:34:03,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:34:03,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:34:03,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:34:03,990 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:34:04,048 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:34:04,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:34:04,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:34:04,050 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:34:04,050 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:34:04,051 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:34:04,051 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:34:04,051 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:34:04,052 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:34:04,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:34:04,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:34:04,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:34:04,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:34:04,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:34:04,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:34:04,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:34:04,056 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:34:04,056 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:34:04,057 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:34:04,057 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:34:04,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:34:04,058 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:34:04,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:34:04,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:34:04,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:34:04,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:34:04,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:34:04,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:34:04,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:34:04,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:34:04,060 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:34:04,060 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:34:04,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:34:04,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:34:04,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:34:04,062 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_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22366af6514966a73d28a63d2bc4f38bf02b60e4 [2021-10-16 02:34:04,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:34:04,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:34:04,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:34:04,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:34:04,451 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:34:04,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loops/s3.i [2021-10-16 02:34:04,521 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/data/f67014832/cce1ab313d5449f6889a6fef6fbdb812/FLAG19d608032 [2021-10-16 02:34:05,201 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:34:05,202 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/sv-benchmarks/c/loops/s3.i [2021-10-16 02:34:05,227 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/data/f67014832/cce1ab313d5449f6889a6fef6fbdb812/FLAG19d608032 [2021-10-16 02:34:05,399 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/data/f67014832/cce1ab313d5449f6889a6fef6fbdb812 [2021-10-16 02:34:05,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:34:05,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:34:05,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:34:05,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:34:05,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:34:05,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:34:05" (1/1) ... [2021-10-16 02:34:05,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67cf6b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:05, skipping insertion in model container [2021-10-16 02:34:05,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:34:05" (1/1) ... [2021-10-16 02:34:05,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:34:05,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:34:05,937 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-10-16 02:34:05,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:34:05,982 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-16 02:34:05,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:34:06,086 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-10-16 02:34:06,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:34:06,096 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:34:06,194 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-10-16 02:34:06,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:34:06,223 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:34:06,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:06 WrapperNode [2021-10-16 02:34:06,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:34:06,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:34:06,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:34:06,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:34:06,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:06" (1/1) ... [2021-10-16 02:34:06,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:06" (1/1) ... [2021-10-16 02:34:06,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:34:06,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:34:06,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:34:06,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:34:06,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:06" (1/1) ... [2021-10-16 02:34:06,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:06" (1/1) ... [2021-10-16 02:34:06,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:06" (1/1) ... [2021-10-16 02:34:06,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:06" (1/1) ... [2021-10-16 02:34:06,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:06" (1/1) ... [2021-10-16 02:34:06,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:06" (1/1) ... [2021-10-16 02:34:06,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:06" (1/1) ... [2021-10-16 02:34:06,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:34:06,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:34:06,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:34:06,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:34:06,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:06" (1/1) ... [2021-10-16 02:34:06,509 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:34:06,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:06,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:34:06,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:34:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:34:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-16 02:34:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:34:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:34:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-16 02:34:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:34:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:34:06,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:34:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:34:06,820 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-16 02:34:15,653 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-16 02:34:15,653 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-16 02:34:15,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:34:15,669 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:34:15,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:15 BoogieIcfgContainer [2021-10-16 02:34:15,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:34:15,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:34:15,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:34:15,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:34:15,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:34:05" (1/3) ... [2021-10-16 02:34:15,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f290c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:34:15, skipping insertion in model container [2021-10-16 02:34:15,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:06" (2/3) ... [2021-10-16 02:34:15,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f290c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:34:15, skipping insertion in model container [2021-10-16 02:34:15,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:15" (3/3) ... [2021-10-16 02:34:15,682 INFO L111 eAbstractionObserver]: Analyzing ICFG s3.i [2021-10-16 02:34:15,689 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:34:15,690 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:34:15,772 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:34:15,783 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:34:15,784 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:34:15,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:15,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-16 02:34:15,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:15,836 INFO L512 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] [2021-10-16 02:34:15,836 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:15,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:15,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1457703967, now seen corresponding path program 1 times [2021-10-16 02:34:15,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:15,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727491294] [2021-10-16 02:34:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:15,874 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:15,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:15,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:15,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:34:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:16,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:34:16,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:16,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:16,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:16,669 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:16,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727491294] [2021-10-16 02:34:16,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727491294] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:16,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:16,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:34:16,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359735496] [2021-10-16 02:34:16,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:34:16,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:16,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:34:16,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:34:16,702 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:16,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:16,859 INFO L93 Difference]: Finished difference Result 375 states and 626 transitions. [2021-10-16 02:34:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:34:16,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 24 [2021-10-16 02:34:16,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:16,874 INFO L225 Difference]: With dead ends: 375 [2021-10-16 02:34:16,877 INFO L226 Difference]: Without dead ends: 217 [2021-10-16 02:34:16,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:34:16,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-10-16 02:34:16,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-10-16 02:34:16,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.4814814814814814) internal successors, (320), 216 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:16,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 320 transitions. [2021-10-16 02:34:16,966 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 320 transitions. Word has length 24 [2021-10-16 02:34:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:16,968 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 320 transitions. [2021-10-16 02:34:16,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 320 transitions. [2021-10-16 02:34:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-16 02:34:16,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:16,975 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:16,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:17,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:17,188 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:17,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:17,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1495258694, now seen corresponding path program 1 times [2021-10-16 02:34:17,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:17,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912043213] [2021-10-16 02:34:17,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:17,191 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:17,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:17,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:17,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:34:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:17,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:34:17,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:17,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:18,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:18,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912043213] [2021-10-16 02:34:18,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912043213] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:18,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:18,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:34:18,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561467334] [2021-10-16 02:34:18,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:34:18,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:18,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:34:18,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:34:18,012 INFO L87 Difference]: Start difference. First operand 217 states and 320 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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) [2021-10-16 02:34:20,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:20,320 INFO L93 Difference]: Finished difference Result 628 states and 933 transitions. [2021-10-16 02:34:20,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:34:20,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 41 [2021-10-16 02:34:20,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:20,330 INFO L225 Difference]: With dead ends: 628 [2021-10-16 02:34:20,330 INFO L226 Difference]: Without dead ends: 521 [2021-10-16 02:34:20,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:34:20,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-10-16 02:34:20,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 421. [2021-10-16 02:34:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.480952380952381) internal successors, (622), 420 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:20,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 622 transitions. [2021-10-16 02:34:20,401 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 622 transitions. Word has length 41 [2021-10-16 02:34:20,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:20,402 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 622 transitions. [2021-10-16 02:34:20,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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) [2021-10-16 02:34:20,402 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 622 transitions. [2021-10-16 02:34:20,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-16 02:34:20,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:20,415 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:20,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:20,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:20,630 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:20,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:20,631 INFO L82 PathProgramCache]: Analyzing trace with hash 924360661, now seen corresponding path program 1 times [2021-10-16 02:34:20,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:20,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410812206] [2021-10-16 02:34:20,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:20,633 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:20,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:20,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:20,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:34:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:21,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:34:21,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:34:21,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:34:21,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:21,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410812206] [2021-10-16 02:34:21,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410812206] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:21,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:21,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:34:21,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078704924] [2021-10-16 02:34:21,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:34:21,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:21,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:34:21,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:34:21,881 INFO L87 Difference]: Start difference. First operand 421 states and 622 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:24,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:24,067 INFO L93 Difference]: Finished difference Result 939 states and 1394 transitions. [2021-10-16 02:34:24,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:34:24,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 80 [2021-10-16 02:34:24,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:24,073 INFO L225 Difference]: With dead ends: 939 [2021-10-16 02:34:24,073 INFO L226 Difference]: Without dead ends: 628 [2021-10-16 02:34:24,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:34:24,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-16 02:34:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2021-10-16 02:34:24,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.4784688995215312) internal successors, (927), 627 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:24,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 927 transitions. [2021-10-16 02:34:24,117 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 927 transitions. Word has length 80 [2021-10-16 02:34:24,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:24,119 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 927 transitions. [2021-10-16 02:34:24,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 927 transitions. [2021-10-16 02:34:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-16 02:34:24,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:24,126 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:24,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:24,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:24,341 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:24,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:24,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1855651051, now seen corresponding path program 1 times [2021-10-16 02:34:24,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:24,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125266859] [2021-10-16 02:34:24,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:24,344 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:24,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:24,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:24,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:34:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:24,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:34:24,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:25,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:34:25,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:34:25,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:34:25,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:34:25,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:34:25,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:34:25,269 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-10-16 02:34:25,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 40 [2021-10-16 02:34:25,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:34:25,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:34:25,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:34:25,879 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-10-16 02:34:25,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 72 treesize of output 89 [2021-10-16 02:34:27,591 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-16 02:34:27,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 110 treesize of output 38 [2021-10-16 02:34:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-16 02:34:27,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-16 02:34:28,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:28,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125266859] [2021-10-16 02:34:28,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125266859] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:28,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:28,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-10-16 02:34:28,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676415924] [2021-10-16 02:34:28,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:34:28,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:28,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:34:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:34:28,582 INFO L87 Difference]: Start difference. First operand 628 states and 927 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:35:30,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:35:30,929 INFO L93 Difference]: Finished difference Result 2264 states and 3359 transitions. [2021-10-16 02:35:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:35:30,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 100 [2021-10-16 02:35:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:35:30,943 INFO L225 Difference]: With dead ends: 2264 [2021-10-16 02:35:30,943 INFO L226 Difference]: Without dead ends: 1643 [2021-10-16 02:35:30,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 449.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:35:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-10-16 02:35:30,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 753. [2021-10-16 02:35:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 1.5106382978723405) internal successors, (1136), 752 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:35:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1136 transitions. [2021-10-16 02:35:31,011 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1136 transitions. Word has length 100 [2021-10-16 02:35:31,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:35:31,011 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1136 transitions. [2021-10-16 02:35:31,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:35:31,012 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1136 transitions. [2021-10-16 02:35:31,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-16 02:35:31,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:35:31,015 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:35:31,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:35:31,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:35:31,230 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:35:31,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:35:31,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1223162519, now seen corresponding path program 1 times [2021-10-16 02:35:31,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:35:31,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416168519] [2021-10-16 02:35:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:35:31,232 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:35:31,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:35:31,233 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:35:31,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:35:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:35:31,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:35:31,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:35:32,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:35:32,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:35:32,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:35:32,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:35:32,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:35:32,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:35:32,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:35:32,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:35:32,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:35:32,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:35:32,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:35:32,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:35:32,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:35:32,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:35:32,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:35:32,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:35:32,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:35:32,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:35:32,665 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-16 02:35:32,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-16 02:35:34,513 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-16 02:35:34,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-16 02:35:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-16 02:35:34,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:35:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-16 02:35:35,039 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:35:35,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416168519] [2021-10-16 02:35:35,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416168519] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:35:35,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:35:35,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-16 02:35:35,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029875079] [2021-10-16 02:35:35,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:35:35,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:35:35,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:35:35,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:35:35,041 INFO L87 Difference]: Start difference. First operand 753 states and 1136 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:02,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:36:02,251 INFO L93 Difference]: Finished difference Result 1757 states and 2634 transitions. [2021-10-16 02:36:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:36:02,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 100 [2021-10-16 02:36:02,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:36:02,264 INFO L225 Difference]: With dead ends: 1757 [2021-10-16 02:36:02,264 INFO L226 Difference]: Without dead ends: 1011 [2021-10-16 02:36:02,265 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 244.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:36:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-10-16 02:36:02,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 873. [2021-10-16 02:36:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.5378440366972477) internal successors, (1341), 872 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:02,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1341 transitions. [2021-10-16 02:36:02,321 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1341 transitions. Word has length 100 [2021-10-16 02:36:02,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:36:02,322 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 1341 transitions. [2021-10-16 02:36:02,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:02,322 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1341 transitions. [2021-10-16 02:36:02,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-16 02:36:02,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:36:02,325 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:36:02,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:36:02,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:36:02,542 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:36:02,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:36:02,543 INFO L82 PathProgramCache]: Analyzing trace with hash -517718612, now seen corresponding path program 1 times [2021-10-16 02:36:02,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:36:02,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254672947] [2021-10-16 02:36:02,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:02,544 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:36:02,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:36:02,544 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:36:02,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:36:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:36:03,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:36:03,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:36:03,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:03,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:03,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:03,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:03,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:03,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:03,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:03,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:03,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:03,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:03,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:03,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:03,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:03,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:36:03,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:36:03,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:36:03,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:36:03,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:36:04,221 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-16 02:36:04,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-16 02:36:04,862 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-16 02:36:04,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-16 02:36:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-16 02:36:05,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:36:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-16 02:36:05,437 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:36:05,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254672947] [2021-10-16 02:36:05,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254672947] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:36:05,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:36:05,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:36:05,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533007310] [2021-10-16 02:36:05,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:36:05,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:36:05,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:36:05,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:36:05,439 INFO L87 Difference]: Start difference. First operand 873 states and 1341 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:48,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:36:48,925 INFO L93 Difference]: Finished difference Result 2405 states and 3628 transitions. [2021-10-16 02:36:48,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:36:48,931 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 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 115 [2021-10-16 02:36:48,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:36:48,942 INFO L225 Difference]: With dead ends: 2405 [2021-10-16 02:36:48,943 INFO L226 Difference]: Without dead ends: 1539 [2021-10-16 02:36:48,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 307.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:36:48,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2021-10-16 02:36:49,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 931. [2021-10-16 02:36:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 930 states have (on average 1.5204301075268818) internal successors, (1414), 930 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1414 transitions. [2021-10-16 02:36:49,016 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1414 transitions. Word has length 115 [2021-10-16 02:36:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:36:49,016 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1414 transitions. [2021-10-16 02:36:49,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:49,017 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1414 transitions. [2021-10-16 02:36:49,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-16 02:36:49,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:36:49,020 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:36:49,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:36:49,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:36:49,243 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:36:49,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:36:49,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1265744566, now seen corresponding path program 1 times [2021-10-16 02:36:49,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:36:49,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274691829] [2021-10-16 02:36:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:49,244 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:36:49,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:36:49,245 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:36:49,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:36:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:36:50,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:36:50,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:36:50,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:50,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:50,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:50,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:50,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:50,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:50,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:50,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:50,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:50,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:50,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:50,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:50,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:36:50,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:36:50,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:36:50,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:36:50,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:36:50,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:36:50,855 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-16 02:36:50,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-16 02:36:51,555 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-16 02:36:51,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-16 02:36:51,733 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-16 02:36:51,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:36:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-16 02:36:52,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:36:52,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274691829] [2021-10-16 02:36:52,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274691829] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:36:52,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:36:52,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:36:52,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860025360] [2021-10-16 02:36:52,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:36:52,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:36:52,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:36:52,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:36:52,192 INFO L87 Difference]: Start difference. First operand 931 states and 1414 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:18,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:18,518 INFO L93 Difference]: Finished difference Result 2578 states and 3869 transitions. [2021-10-16 02:37:18,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:37:18,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 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 115 [2021-10-16 02:37:18,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:18,532 INFO L225 Difference]: With dead ends: 2578 [2021-10-16 02:37:18,532 INFO L226 Difference]: Without dead ends: 1657 [2021-10-16 02:37:18,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 326.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:37:18,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2021-10-16 02:37:18,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1014. [2021-10-16 02:37:18,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 1013 states have (on average 1.5024679170779862) internal successors, (1522), 1013 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1522 transitions. [2021-10-16 02:37:18,615 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1522 transitions. Word has length 115 [2021-10-16 02:37:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:18,615 INFO L470 AbstractCegarLoop]: Abstraction has 1014 states and 1522 transitions. [2021-10-16 02:37:18,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1522 transitions. [2021-10-16 02:37:18,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-16 02:37:18,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:18,619 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:37:18,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:18,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:37:18,840 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:18,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:18,841 INFO L82 PathProgramCache]: Analyzing trace with hash -647023955, now seen corresponding path program 1 times [2021-10-16 02:37:18,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:37:18,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504464696] [2021-10-16 02:37:18,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:18,842 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:37:18,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:37:18,843 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:37:18,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:37:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:19,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:37:19,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:20,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:20,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:20,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:20,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:20,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:20,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:20,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:20,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:20,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:20,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:20,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:20,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:20,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:20,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:37:20,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:37:20,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:37:20,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:37:20,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:37:20,620 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-16 02:37:20,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-16 02:37:21,932 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-16 02:37:21,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-16 02:37:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-16 02:37:22,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-16 02:37:22,536 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:37:22,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504464696] [2021-10-16 02:37:22,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504464696] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:22,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:22,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:37:22,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327712022] [2021-10-16 02:37:22,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:37:22,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:37:22,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:37:22,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:37:22,538 INFO L87 Difference]: Start difference. First operand 1014 states and 1522 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:54,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:37:54,479 INFO L93 Difference]: Finished difference Result 2562 states and 3807 transitions. [2021-10-16 02:37:54,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:37:54,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 115 [2021-10-16 02:37:54,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:37:54,491 INFO L225 Difference]: With dead ends: 2562 [2021-10-16 02:37:54,491 INFO L226 Difference]: Without dead ends: 1729 [2021-10-16 02:37:54,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 322.8ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:37:54,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-10-16 02:37:54,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1130. [2021-10-16 02:37:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 1.5022143489813995) internal successors, (1696), 1129 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:54,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1696 transitions. [2021-10-16 02:37:54,568 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1696 transitions. Word has length 115 [2021-10-16 02:37:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:37:54,568 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 1696 transitions. [2021-10-16 02:37:54,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:37:54,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1696 transitions. [2021-10-16 02:37:54,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-16 02:37:54,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:37:54,572 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:37:54,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:37:54,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:37:54,795 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:37:54,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:37:54,795 INFO L82 PathProgramCache]: Analyzing trace with hash 336272896, now seen corresponding path program 1 times [2021-10-16 02:37:54,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:37:54,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867498625] [2021-10-16 02:37:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:37:54,802 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:37:54,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:37:54,803 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:37:54,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:37:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:37:55,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:37:55,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:37:56,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:56,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:56,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:56,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:56,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:56,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:56,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:56,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:56,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:56,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:56,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:56,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:56,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:37:56,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:37:56,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:37:56,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:37:56,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:37:56,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:37:56,542 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-16 02:37:56,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-16 02:37:57,408 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-16 02:37:57,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-16 02:37:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-16 02:37:57,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:37:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-16 02:37:58,101 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:37:58,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867498625] [2021-10-16 02:37:58,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867498625] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:37:58,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:37:58,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:37:58,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339630545] [2021-10-16 02:37:58,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:37:58,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:37:58,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:37:58,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:37:58,102 INFO L87 Difference]: Start difference. First operand 1130 states and 1696 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:38:25,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:38:25,274 INFO L93 Difference]: Finished difference Result 2873 states and 4263 transitions. [2021-10-16 02:38:25,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:38:25,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 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 117 [2021-10-16 02:38:25,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:38:25,287 INFO L225 Difference]: With dead ends: 2873 [2021-10-16 02:38:25,287 INFO L226 Difference]: Without dead ends: 1753 [2021-10-16 02:38:25,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 319.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:38:25,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2021-10-16 02:38:25,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1136. [2021-10-16 02:38:25,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 1.4854625550660794) internal successors, (1686), 1135 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:38:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1686 transitions. [2021-10-16 02:38:25,376 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1686 transitions. Word has length 117 [2021-10-16 02:38:25,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:38:25,376 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1686 transitions. [2021-10-16 02:38:25,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:38:25,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1686 transitions. [2021-10-16 02:38:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-16 02:38:25,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:38:25,381 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:38:25,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:38:25,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:38:25,604 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:38:25,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:38:25,604 INFO L82 PathProgramCache]: Analyzing trace with hash 475530403, now seen corresponding path program 1 times [2021-10-16 02:38:25,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:38:25,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307682014] [2021-10-16 02:38:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:38:25,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:38:25,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:38:25,607 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:38:25,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:38:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:38:26,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:38:26,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:38:27,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:27,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:27,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:27,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:27,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:27,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:27,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:27,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:27,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:27,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:27,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:27,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:27,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:38:27,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:38:27,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:38:27,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:38:27,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:38:27,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:38:27,669 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-16 02:38:27,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-16 02:38:29,043 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-16 02:38:29,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-16 02:38:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-16 02:38:29,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:38:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-16 02:38:29,669 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:38:29,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307682014] [2021-10-16 02:38:29,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307682014] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:38:29,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:38:29,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:38:29,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173313466] [2021-10-16 02:38:29,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:38:29,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:38:29,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:38:29,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:38:29,671 INFO L87 Difference]: Start difference. First operand 1136 states and 1686 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:10,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:39:10,254 INFO L93 Difference]: Finished difference Result 2733 states and 4018 transitions. [2021-10-16 02:39:10,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:39:10,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 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 117 [2021-10-16 02:39:10,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:39:10,266 INFO L225 Difference]: With dead ends: 2733 [2021-10-16 02:39:10,266 INFO L226 Difference]: Without dead ends: 1799 [2021-10-16 02:39:10,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 308.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:39:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2021-10-16 02:39:10,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1243. [2021-10-16 02:39:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 1.4734299516908214) internal successors, (1830), 1242 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1830 transitions. [2021-10-16 02:39:10,354 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1830 transitions. Word has length 117 [2021-10-16 02:39:10,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:39:10,354 INFO L470 AbstractCegarLoop]: Abstraction has 1243 states and 1830 transitions. [2021-10-16 02:39:10,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1830 transitions. [2021-10-16 02:39:10,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-16 02:39:10,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:39:10,360 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:39:10,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:39:10,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:39:10,574 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:39:10,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:39:10,574 INFO L82 PathProgramCache]: Analyzing trace with hash -760085446, now seen corresponding path program 1 times [2021-10-16 02:39:10,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:39:10,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801196088] [2021-10-16 02:39:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:39:10,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:39:10,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:39:10,576 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:39:10,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:39:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:39:11,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:39:11,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:12,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:12,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:12,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:12,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:12,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:12,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:12,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:12,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:12,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:12,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:12,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:12,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:12,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:12,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:39:12,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:39:12,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:39:12,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:39:12,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:39:12,745 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-16 02:39:12,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-16 02:39:13,744 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-16 02:39:13,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-16 02:39:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-16 02:39:13,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-16 02:39:14,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:39:14,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801196088] [2021-10-16 02:39:14,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801196088] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:39:14,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:39:14,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:39:14,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454906672] [2021-10-16 02:39:14,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:39:14,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:39:14,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:39:14,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:39:14,418 INFO L87 Difference]: Start difference. First operand 1243 states and 1830 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:42,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:39:42,285 INFO L93 Difference]: Finished difference Result 3074 states and 4487 transitions. [2021-10-16 02:39:42,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:39:42,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 118 [2021-10-16 02:39:42,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:39:42,298 INFO L225 Difference]: With dead ends: 3074 [2021-10-16 02:39:42,298 INFO L226 Difference]: Without dead ends: 1841 [2021-10-16 02:39:42,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 377.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:39:42,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2021-10-16 02:39:42,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1249. [2021-10-16 02:39:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.453525641025641) internal successors, (1814), 1248 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:42,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1814 transitions. [2021-10-16 02:39:42,393 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1814 transitions. Word has length 118 [2021-10-16 02:39:42,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:39:42,394 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1814 transitions. [2021-10-16 02:39:42,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:39:42,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1814 transitions. [2021-10-16 02:39:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-10-16 02:39:42,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:39:42,398 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:39:42,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:39:42,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:39:42,622 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:39:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:39:42,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1579061573, now seen corresponding path program 1 times [2021-10-16 02:39:42,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:39:42,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776297721] [2021-10-16 02:39:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:39:42,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:39:42,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:39:42,624 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:39:42,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:39:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:39:44,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:39:44,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:39:44,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:44,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:44,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:44,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:44,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:44,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:44,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:44,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:44,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:44,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:44,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:44,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:44,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:39:44,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:39:44,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:39:44,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:39:44,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:39:44,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:39:44,776 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-16 02:39:44,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-16 02:39:45,837 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-16 02:39:45,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-16 02:39:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-16 02:39:46,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:39:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-16 02:39:46,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:39:46,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776297721] [2021-10-16 02:39:46,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776297721] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:39:46,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:39:46,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:39:46,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075062873] [2021-10-16 02:39:46,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:39:46,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:39:46,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:39:46,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:39:46,611 INFO L87 Difference]: Start difference. First operand 1249 states and 1814 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:17,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:17,184 INFO L93 Difference]: Finished difference Result 3125 states and 4526 transitions. [2021-10-16 02:40:17,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:40:17,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 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 119 [2021-10-16 02:40:17,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:17,194 INFO L225 Difference]: With dead ends: 3125 [2021-10-16 02:40:17,194 INFO L226 Difference]: Without dead ends: 1886 [2021-10-16 02:40:17,196 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 343.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:40:17,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-10-16 02:40:17,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1345. [2021-10-16 02:40:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1344 states have (on average 1.4404761904761905) internal successors, (1936), 1344 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1936 transitions. [2021-10-16 02:40:17,280 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1936 transitions. Word has length 119 [2021-10-16 02:40:17,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:17,281 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 1936 transitions. [2021-10-16 02:40:17,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:17,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1936 transitions. [2021-10-16 02:40:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-10-16 02:40:17,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:17,285 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:40:17,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:40:17,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:40:17,498 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:40:17,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:17,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1069684126, now seen corresponding path program 1 times [2021-10-16 02:40:17,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:40:17,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598498495] [2021-10-16 02:40:17,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:17,500 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:40:17,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:40:17,500 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:40:17,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:40:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:18,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:40:18,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:40:19,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:19,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:19,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:19,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:19,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:19,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:19,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:19,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:19,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:19,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:19,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:19,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:19,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:19,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:40:19,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:40:19,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:40:19,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:40:19,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:40:19,688 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-16 02:40:19,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-16 02:40:21,047 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-16 02:40:21,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-16 02:40:21,221 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-16 02:40:21,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:40:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-16 02:40:21,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:40:21,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598498495] [2021-10-16 02:40:21,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598498495] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:40:21,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:40:21,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:40:21,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763757331] [2021-10-16 02:40:21,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:40:21,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:40:21,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:40:21,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:40:21,756 INFO L87 Difference]: Start difference. First operand 1345 states and 1936 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:50,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:40:50,280 INFO L93 Difference]: Finished difference Result 3291 states and 4713 transitions. [2021-10-16 02:40:50,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:40:50,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 119 [2021-10-16 02:40:50,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:40:50,293 INFO L225 Difference]: With dead ends: 3291 [2021-10-16 02:40:50,293 INFO L226 Difference]: Without dead ends: 1956 [2021-10-16 02:40:50,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 314.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:40:50,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2021-10-16 02:40:50,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1440. [2021-10-16 02:40:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 1.4246004169562196) internal successors, (2050), 1439 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:50,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 2050 transitions. [2021-10-16 02:40:50,390 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 2050 transitions. Word has length 119 [2021-10-16 02:40:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:40:50,392 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 2050 transitions. [2021-10-16 02:40:50,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:40:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 2050 transitions. [2021-10-16 02:40:50,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-16 02:40:50,396 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:40:50,397 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:40:50,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:40:50,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:40:50,618 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:40:50,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:40:50,618 INFO L82 PathProgramCache]: Analyzing trace with hash -672153909, now seen corresponding path program 1 times [2021-10-16 02:40:50,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:40:50,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697431487] [2021-10-16 02:40:50,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:40:50,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:40:50,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:40:50,620 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:40:50,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-16 02:40:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:40:52,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:40:52,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:40:52,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:52,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:52,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:52,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:52,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:52,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:52,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:52,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:52,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:52,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:52,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:52,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:52,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:40:52,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:40:52,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:40:52,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:40:52,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:40:52,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:40:52,903 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-16 02:40:52,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-16 02:40:54,514 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-16 02:40:54,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-16 02:40:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-16 02:40:54,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:40:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-16 02:40:55,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:40:55,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697431487] [2021-10-16 02:40:55,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697431487] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:40:55,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:40:55,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:40:55,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58818257] [2021-10-16 02:40:55,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:40:55,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:40:55,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:40:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:40:55,176 INFO L87 Difference]: Start difference. First operand 1440 states and 2050 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:41:25,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:41:25,703 INFO L93 Difference]: Finished difference Result 3374 states and 4798 transitions. [2021-10-16 02:41:25,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:41:25,705 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 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 120 [2021-10-16 02:41:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:41:25,713 INFO L225 Difference]: With dead ends: 3374 [2021-10-16 02:41:25,713 INFO L226 Difference]: Without dead ends: 1944 [2021-10-16 02:41:25,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 333.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:41:25,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2021-10-16 02:41:25,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1485. [2021-10-16 02:41:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 1.4231805929919137) internal successors, (2112), 1484 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:41:25,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2112 transitions. [2021-10-16 02:41:25,821 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2112 transitions. Word has length 120 [2021-10-16 02:41:25,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:41:25,821 INFO L470 AbstractCegarLoop]: Abstraction has 1485 states and 2112 transitions. [2021-10-16 02:41:25,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:41:25,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2112 transitions. [2021-10-16 02:41:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-16 02:41:25,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:41:25,826 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:41:25,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-16 02:41:26,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:41:26,045 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:41:26,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:41:26,045 INFO L82 PathProgramCache]: Analyzing trace with hash 745942391, now seen corresponding path program 1 times [2021-10-16 02:41:26,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:41:26,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501155258] [2021-10-16 02:41:26,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:41:26,047 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:41:26,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:41:26,047 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:41:26,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:41:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:41:27,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:41:27,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:41:28,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:41:28,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:41:28,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:41:28,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:41:28,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:41:28,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:41:28,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:41:28,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:41:28,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:41:28,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:41:28,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:41:28,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:41:28,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:41:28,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:41:28,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:41:28,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:41:28,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:41:28,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:41:28,652 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-10-16 02:41:28,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-10-16 02:41:30,074 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-10-16 02:41:30,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 35 [2021-10-16 02:41:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-16 02:41:30,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:41:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-16 02:41:30,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:41:30,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501155258] [2021-10-16 02:41:30,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501155258] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:41:30,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:41:30,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:41:30,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224499229] [2021-10-16 02:41:30,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:41:30,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:41:30,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:41:30,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:41:30,727 INFO L87 Difference]: Start difference. First operand 1485 states and 2112 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:01,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:42:01,186 INFO L93 Difference]: Finished difference Result 3407 states and 4839 transitions. [2021-10-16 02:42:01,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:42:01,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 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 120 [2021-10-16 02:42:01,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:42:01,195 INFO L225 Difference]: With dead ends: 3407 [2021-10-16 02:42:01,195 INFO L226 Difference]: Without dead ends: 1937 [2021-10-16 02:42:01,196 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 327.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:42:01,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2021-10-16 02:42:01,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1488. [2021-10-16 02:42:01,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 1.4088769334229994) internal successors, (2095), 1487 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:01,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2095 transitions. [2021-10-16 02:42:01,300 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2095 transitions. Word has length 120 [2021-10-16 02:42:01,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:42:01,300 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 2095 transitions. [2021-10-16 02:42:01,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:42:01,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2095 transitions. [2021-10-16 02:42:01,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-16 02:42:01,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:42:01,305 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:42:01,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-16 02:42:01,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:42:01,530 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:42:01,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:42:01,530 INFO L82 PathProgramCache]: Analyzing trace with hash 787843816, now seen corresponding path program 1 times [2021-10-16 02:42:01,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:42:01,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974875915] [2021-10-16 02:42:01,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:42:01,532 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:42:01,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:42:01,533 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:42:01,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 02:42:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:42:03,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:42:03,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:42:03,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:42:03,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:42:03,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:42:03,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:42:03,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 02:42:03,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:03,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:04,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:04,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 69 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 113 [2021-10-16 02:42:06,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:42:06,948 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:42:06,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 273 treesize of output 221 [2021-10-16 02:42:14,943 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:42:14,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 186 treesize of output 106 [2021-10-16 02:42:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-10-16 02:42:15,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:42:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-10-16 02:42:16,297 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:42:16,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974875915] [2021-10-16 02:42:16,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974875915] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:42:16,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:42:16,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-10-16 02:42:16,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810102032] [2021-10-16 02:42:16,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:42:16,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:42:16,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:42:16,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-10-16 02:42:16,300 INFO L87 Difference]: Start difference. First operand 1488 states and 2095 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:20,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:43:20,259 INFO L93 Difference]: Finished difference Result 3304 states and 4649 transitions. [2021-10-16 02:43:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:43:20,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 123 [2021-10-16 02:43:20,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:43:20,270 INFO L225 Difference]: With dead ends: 3304 [2021-10-16 02:43:20,270 INFO L226 Difference]: Without dead ends: 2069 [2021-10-16 02:43:20,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12555.7ms TimeCoverageRelationStatistics Valid=27, Invalid=44, Unknown=1, NotChecked=0, Total=72 [2021-10-16 02:43:20,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-10-16 02:43:20,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1488. [2021-10-16 02:43:20,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 1.4041694687289845) internal successors, (2088), 1487 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:20,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2088 transitions. [2021-10-16 02:43:20,381 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2088 transitions. Word has length 123 [2021-10-16 02:43:20,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:43:20,381 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 2088 transitions. [2021-10-16 02:43:20,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:43:20,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2088 transitions. [2021-10-16 02:43:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-16 02:43:20,385 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:43:20,385 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:43:20,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-16 02:43:20,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:43:20,608 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:43:20,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:43:20,609 INFO L82 PathProgramCache]: Analyzing trace with hash -272550210, now seen corresponding path program 1 times [2021-10-16 02:43:20,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:43:20,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197604190] [2021-10-16 02:43:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:43:20,610 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:43:20,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:43:20,611 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:43:20,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-16 02:43:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:43:28,072 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:43:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:43:34,185 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 02:43:34,186 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:43:34,187 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:43:34,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-16 02:43:34,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:43:34,422 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:43:34,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:43:34 BoogieIcfgContainer [2021-10-16 02:43:34,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:43:34,613 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:43:34,614 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:43:34,614 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:43:34,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:15" (3/4) ... [2021-10-16 02:43:34,617 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 02:43:34,751 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:43:34,751 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:43:34,753 INFO L168 Benchmark]: Toolchain (without parser) took 569349.47 ms. Allocated memory was 62.9 MB in the beginning and 96.5 MB in the end (delta: 33.6 MB). Free memory was 41.3 MB in the beginning and 46.6 MB in the end (delta: -5.2 MB). Peak memory consumption was 50.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:43:34,753 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 62.9 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:43:34,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.83 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 41.1 MB in the beginning and 46.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:43:34,754 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.57 ms. Allocated memory is still 75.5 MB. Free memory was 46.9 MB in the beginning and 42.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:43:34,755 INFO L168 Benchmark]: Boogie Preprocessor took 155.61 ms. Allocated memory is still 75.5 MB. Free memory was 42.3 MB in the beginning and 35.7 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:43:34,755 INFO L168 Benchmark]: RCFGBuilder took 9170.52 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 35.5 MB in the beginning and 40.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:43:34,756 INFO L168 Benchmark]: TraceAbstraction took 558939.10 ms. Allocated memory is still 96.5 MB. Free memory was 39.4 MB in the beginning and 40.4 MB in the end (delta: -973.6 kB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:43:34,756 INFO L168 Benchmark]: Witness Printer took 138.24 ms. Allocated memory is still 96.5 MB. Free memory was 40.4 MB in the beginning and 46.6 MB in the end (delta: -6.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:43:34,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 62.9 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 820.83 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 41.1 MB in the beginning and 46.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.57 ms. Allocated memory is still 75.5 MB. Free memory was 46.9 MB in the beginning and 42.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 155.61 ms. Allocated memory is still 75.5 MB. Free memory was 42.3 MB in the beginning and 35.7 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9170.52 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 35.5 MB in the beginning and 40.2 MB in the end (delta: -4.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 558939.10 ms. Allocated memory is still 96.5 MB. Free memory was 39.4 MB in the beginning and 40.4 MB in the end (delta: -973.6 kB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. * Witness Printer took 138.24 ms. Allocated memory is still 96.5 MB. Free memory was 40.4 MB in the beginning and 46.6 MB in the end (delta: -6.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1658]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1042] static int init = 1; [L1043] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1065] SSL *s ; [L1069] s = malloc (sizeof (SSL)) [L1070] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1071] EXPR s->s3 [L1071] s->s3->flags = __VERIFIER_nondet_long() [L1072] EXPR s->s3 [L1072] (s->s3)->tmp.cert_req = __VERIFIER_nondet_int() [L1073] EXPR s->s3 [L1073] (s->s3)->tmp.new_cipher = malloc(sizeof(struct ssl_cipher_st)) [L1074] EXPR s->s3 [L1074] EXPR (s->s3)->tmp.new_cipher [L1074] ((s->s3)->tmp.new_cipher)->algorithms = __VERIFIER_nondet_ulong() [L1075] EXPR s->s3 [L1075] s->s3->tmp.next_state = __VERIFIER_nondet_int() [L1076] s->bbio = (BIO *) __VERIFIER_nondet_ulong() [L1077] s->wbio = (BIO *) __VERIFIER_nondet_ulong() [L1078] s->ctx = malloc(sizeof(SSL_CTX)) [L1079] EXPR s->ctx [L1079] (s->ctx)->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1080] s->state = 12292 [L1081] s->version = __VERIFIER_nondet_int() [L1082] s->init_buf = (BUF_MEM *)__VERIFIER_nondet_ulong() [L1083] s->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1090] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1091] unsigned long tmp ; [L1092] unsigned long l ; [L1093] long num1 ; [L1094] void (*cb)() ; [L1095] int ret ; [L1096] int new_state ; [L1097] int state ; [L1098] int skip ; [L1099] int *tmp___0 ; [L1100] int tmp___1 = __VERIFIER_nondet_int(); [L1101] int tmp___2 = __VERIFIER_nondet_int(); [L1102] int tmp___3 ; [L1103] int tmp___4 ; [L1104] int tmp___5 ; [L1105] int tmp___6 ; [L1106] int tmp___7 ; [L1107] int tmp___8 ; [L1108] long tmp___9 ; [L1110] int blastFlag ; [L1113] blastFlag = 0 [L1114] s->state = 12292 [L1115] s->hit = __VERIFIER_nondet_int() [L1117] tmp = __VERIFIER_nondet_int() [L1118] cb = (void (*)())((void *)0) [L1119] ret = -1 [L1120] skip = 0 [L1121] tmp___0 = (int*)malloc(sizeof(int)) [L1122] *tmp___0 = 0 [L1123] EXPR s->info_callback VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1123] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1124] EXPR s->info_callback [L1124] cb = s->info_callback [L1132] EXPR s->in_handshake [L1132] s->in_handshake += 1 [L1133] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1146] COND TRUE s->state == 12292 [L1249] s->new_session = 1 [L1250] s->state = 4096 [L1251] EXPR s->ctx [L1251] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1251] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1256] s->server = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1257] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1262] EXPR s->version VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1262] COND FALSE !((s->version & 65280) != 768) [L1268] s->type = 4096 [L1269] EXPR s->init_buf VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1269] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1281] tmp___4 = __VERIFIER_nondet_int() [L1282] COND FALSE !(! tmp___4) [L1288] tmp___5 = __VERIFIER_nondet_int() [L1289] COND FALSE !(! tmp___5) [L1295] s->state = 4368 [L1296] EXPR s->ctx [L1296] EXPR (s->ctx)->stats.sess_connect [L1296] (s->ctx)->stats.sess_connect += 1 [L1297] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1161] COND TRUE s->state == 4368 [L1301] s->shutdown = 0 [L1302] ret = __VERIFIER_nondet_int() [L1303] COND TRUE blastFlag == 0 [L1304] blastFlag = 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1308] COND FALSE !(ret <= 0) [L1313] s->state = 4384 [L1314] s->init_num = 0 [L1315] EXPR s->bbio [L1315] EXPR s->wbio VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1315] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1167] COND TRUE s->state == 4384 [L1323] ret = __VERIFIER_nondet_int() [L1324] COND TRUE blastFlag == 1 [L1325] blastFlag = 2 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1329] COND FALSE !(ret <= 0) [L1334] s->hit VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1334] COND FALSE !(s->hit) [L1337] s->state = 4400 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1339] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1173] COND TRUE s->state == 4400 [L1343] EXPR s->s3 [L1343] EXPR (s->s3)->tmp.new_cipher [L1343] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1343] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1346] ret = __VERIFIER_nondet_int() [L1347] COND TRUE blastFlag == 2 [L1348] blastFlag = 3 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1352] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1358] s->state = 4416 [L1359] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1179] COND TRUE s->state == 4416 [L1363] ret = __VERIFIER_nondet_int() [L1364] COND TRUE blastFlag == 3 [L1365] blastFlag = 4 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1369] COND FALSE !(ret <= 0) [L1374] s->state = 4432 [L1375] s->init_num = 0 [L1376] tmp___6 = __VERIFIER_nondet_int() [L1377] COND FALSE !(! tmp___6) VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1179] COND FALSE !(s->state == 4416) [L1182] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1182] COND FALSE !(s->state == 4417) [L1185] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1185] COND TRUE s->state == 4432 [L1386] ret = __VERIFIER_nondet_int() [L1387] COND FALSE !(blastFlag == 5) VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1392] COND FALSE !(ret <= 0) [L1397] s->state = 4448 [L1398] s->init_num = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1143] COND TRUE 1 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1179] COND FALSE !(s->state == 4416) [L1182] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1182] COND FALSE !(s->state == 4417) [L1185] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1185] COND FALSE !(s->state == 4432) [L1188] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1188] COND FALSE !(s->state == 4433) [L1191] EXPR s->state VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1191] COND TRUE s->state == 4448 [L1402] ret = __VERIFIER_nondet_int() [L1403] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1658] reach_error() VAL [init=1, SSLv3_client_data={-2147483569:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 558648.7ms, OverallIterations: 17, TraceHistogramMax: 7, EmptinessCheckTime: 96.7ms, AutomataDifference: 475890.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2939 SDtfs, 2968 SDslu, 6365 SDs, 0 SdLazy, 5444 SolverSat, 620 SolverUnsat, 56 SolverUnknown, 0 SolverNotchecked, 458464.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3279 GetRequests, 3192 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 16613.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1488occurred in iteration=15, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1284.5ms AutomataMinimizationTime, 16 MinimizatonAttempts, 7289 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 718.3ms SsaConstructionTime, 15214.6ms SatisfiabilityAnalysisTime, 47285.5ms InterpolantComputationTime, 1780 NumberOfCodeBlocks, 1780 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 3254 ConstructedInterpolants, 11 QuantifiedInterpolants, 21028 SizeOfPredicates, 79 NumberOfNonLiveVariables, 4765 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 32 InterpolantComputations, 32 PerfectInterpolantSequences, 4446/4446 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 02:43:34,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_012fba29-7df2-4c2f-9d29-776082d2122e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...