./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 ............................................................................................................................................. 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_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 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Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:53:52,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:53:52,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:53:52,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:53:52,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:53:52,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:53:52,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:53:52,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:53:52,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:53:52,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:53:52,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:53:52,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:53:52,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:53:52,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:53:52,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:53:52,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:53:52,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:53:52,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:53:52,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:53:52,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:53:52,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:53:52,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:53:52,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:53:52,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:53:52,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:53:52,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:53:52,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:53:52,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:53:52,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:53:52,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:53:52,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:53:52,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:53:52,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:53:52,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:53:52,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:53:52,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:53:52,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:53:52,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:53:52,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:53:52,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:53:52,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:53:52,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-24 09:53:52,970 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:53:52,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:53:52,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:53:52,979 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:53:52,980 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:53:52,980 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:53:52,980 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:53:52,980 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:53:52,981 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:53:52,981 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:53:52,981 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:53:52,981 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:53:52,981 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:53:52,982 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:53:52,982 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:53:52,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 09:53:52,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 09:53:52,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:53:52,983 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:53:52,984 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 09:53:52,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:53:52,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:53:52,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:53:52,984 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 09:53:52,985 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 09:53:52,985 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 09:53:52,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:53:52,985 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:53:52,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:53:52,986 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:53:52,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:53:52,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:53:52,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:53:52,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:53:52,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:53:52,987 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:53:52,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:53:52,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:53:52,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:53:52,988 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_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 [2021-10-24 09:53:53,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:53:53,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:53:53,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:53:53,387 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:53:53,388 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:53:53,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-10-24 09:53:53,484 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/data/f3430be60/7a2002cc0910442dba0449ba65d423f1/FLAGb745f49ab [2021-10-24 09:53:54,178 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:53:54,179 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-10-24 09:53:54,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/data/f3430be60/7a2002cc0910442dba0449ba65d423f1/FLAGb745f49ab [2021-10-24 09:53:54,366 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/data/f3430be60/7a2002cc0910442dba0449ba65d423f1 [2021-10-24 09:53:54,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:53:54,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:53:54,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:53:54,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:53:54,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:53:54,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:53:54" (1/1) ... [2021-10-24 09:53:54,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bbcd7ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:54, skipping insertion in model container [2021-10-24 09:53:54,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:53:54" (1/1) ... [2021-10-24 09:53:54,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:53:54,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:53:54,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:53:54,992 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) [2021-10-24 09:53:54,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2ad49268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:54, skipping insertion in model container [2021-10-24 09:53:54,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:53:54,994 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 09:53:54,997 INFO L168 Benchmark]: Toolchain (without parser) took 618.65 ms. Allocated memory is still 125.8 MB. Free memory was 85.6 MB in the beginning and 95.9 MB in the end (delta: -10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:53:54,999 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 125.8 MB. Free memory is still 104.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:53:55,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.46 ms. Allocated memory is still 125.8 MB. Free memory was 85.5 MB in the beginning and 95.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:53:55,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 125.8 MB. Free memory is still 104.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 615.46 ms. Allocated memory is still 125.8 MB. Free memory was 85.5 MB in the beginning and 95.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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-e943c26 [2021-10-24 09:53:59,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:53:59,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:53:59,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:53:59,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:53:59,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:53:59,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:53:59,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:53:59,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:53:59,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:53:59,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:53:59,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:53:59,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:53:59,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:53:59,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:53:59,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:53:59,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:53:59,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:53:59,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:53:59,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:53:59,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:53:59,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:53:59,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:53:59,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:53:59,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:53:59,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:53:59,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:53:59,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:53:59,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:53:59,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:53:59,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:53:59,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:53:59,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:53:59,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:53:59,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:53:59,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:53:59,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:53:59,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:53:59,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:53:59,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:53:59,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:53:59,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-24 09:53:59,908 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:53:59,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:53:59,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:53:59,910 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:53:59,910 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:53:59,910 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:53:59,911 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:53:59,911 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:53:59,911 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:53:59,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 09:53:59,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 09:53:59,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:53:59,915 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:53:59,915 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 09:53:59,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:53:59,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:53:59,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:53:59,916 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 09:53:59,916 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 09:53:59,916 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 09:53:59,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:53:59,917 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:53:59,917 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:53:59,917 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:53:59,918 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:53:59,918 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:53:59,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:53:59,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:53:59,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:53:59,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:53:59,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:53:59,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:53:59,920 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:53:59,920 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:53:59,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:53:59,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:53:59,936 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_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 [2021-10-24 09:54:00,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:54:00,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:54:00,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:54:00,499 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:54:00,500 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:54:00,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-10-24 09:54:00,574 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/data/b7c21b247/7a762d17bbfd4befb4b80ade4da76cc4/FLAGcb28aa87a [2021-10-24 09:54:01,348 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:54:01,349 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-10-24 09:54:01,363 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/data/b7c21b247/7a762d17bbfd4befb4b80ade4da76cc4/FLAGcb28aa87a [2021-10-24 09:54:01,547 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/data/b7c21b247/7a762d17bbfd4befb4b80ade4da76cc4 [2021-10-24 09:54:01,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:54:01,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:54:01,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:54:01,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:54:01,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:54:01,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:54:01" (1/1) ... [2021-10-24 09:54:01,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f5e3bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:01, skipping insertion in model container [2021-10-24 09:54:01,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:54:01" (1/1) ... [2021-10-24 09:54:01,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:54:01,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:54:02,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:54:02,210 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 09:54:02,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:54:02,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:54:02,317 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:54:02,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:54:02,456 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:54:02,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:02 WrapperNode [2021-10-24 09:54:02,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:54:02,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:54:02,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:54:02,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:54:02,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:02" (1/1) ... [2021-10-24 09:54:02,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:02" (1/1) ... [2021-10-24 09:54:02,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:54:02,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:54:02,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:54:02,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:54:02,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:02" (1/1) ... [2021-10-24 09:54:02,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:02" (1/1) ... [2021-10-24 09:54:02,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:02" (1/1) ... [2021-10-24 09:54:02,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:02" (1/1) ... [2021-10-24 09:54:02,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:02" (1/1) ... [2021-10-24 09:54:02,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:02" (1/1) ... [2021-10-24 09:54:02,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:02" (1/1) ... [2021-10-24 09:54:02,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:54:02,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:54:02,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:54:02,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:54:02,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:02" (1/1) ... [2021-10-24 09:54:02,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:54:02,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:54:02,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:54:02,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:54:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-24 09:54:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 09:54:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-24 09:54:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:54:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-24 09:54:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-24 09:54:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 09:54:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:54:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-24 09:54:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:54:02,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:54:03,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:54:03,538 INFO L299 CfgBuilder]: Removed 40 assume(true) statements. [2021-10-24 09:54:03,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:54:03 BoogieIcfgContainer [2021-10-24 09:54:03,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:54:03,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:54:03,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:54:03,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:54:03,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:54:01" (1/3) ... [2021-10-24 09:54:03,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0598ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:54:03, skipping insertion in model container [2021-10-24 09:54:03,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:54:02" (2/3) ... [2021-10-24 09:54:03,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0598ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:54:03, skipping insertion in model container [2021-10-24 09:54:03,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:54:03" (3/3) ... [2021-10-24 09:54:03,549 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test15-2.i [2021-10-24 09:54:03,555 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:54:03,555 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2021-10-24 09:54:03,603 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:54:03,610 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:54:03,610 INFO L340 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2021-10-24 09:54:03,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 73 states have (on average 1.8904109589041096) internal successors, (138), 125 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:03,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 09:54:03,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:03,635 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 09:54:03,636 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:03,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:03,642 INFO L82 PathProgramCache]: Analyzing trace with hash 889508899, now seen corresponding path program 1 times [2021-10-24 09:54:03,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:03,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335760533] [2021-10-24 09:54:03,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:03,675 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:03,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:03,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:03,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:54:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:03,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:54:03,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:03,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:03,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:03,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335760533] [2021-10-24 09:54:03,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335760533] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:03,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:03,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 09:54:03,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308828634] [2021-10-24 09:54:03,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:54:03,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:03,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:54:03,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:54:03,916 INFO L87 Difference]: Start difference. First operand has 126 states, 73 states have (on average 1.8904109589041096) internal successors, (138), 125 states have internal predecessors, (138), 0 states have call successors, (0), 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 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:04,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:04,157 INFO L93 Difference]: Finished difference Result 485 states and 525 transitions. [2021-10-24 09:54:04,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:54:04,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-10-24 09:54:04,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:04,189 INFO L225 Difference]: With dead ends: 485 [2021-10-24 09:54:04,189 INFO L226 Difference]: Without dead ends: 477 [2021-10-24 09:54:04,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:54:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-10-24 09:54:04,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 126. [2021-10-24 09:54:04,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 74 states have (on average 1.864864864864865) internal successors, (138), 125 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-10-24 09:54:04,268 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 6 [2021-10-24 09:54:04,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:04,269 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-10-24 09:54:04,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-10-24 09:54:04,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 09:54:04,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:04,270 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 09:54:04,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-24 09:54:04,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:04,483 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:04,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:04,485 INFO L82 PathProgramCache]: Analyzing trace with hash 889568481, now seen corresponding path program 1 times [2021-10-24 09:54:04,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:04,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457462110] [2021-10-24 09:54:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:04,486 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:04,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:04,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:04,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 09:54:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:04,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:54:04,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:04,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:04,712 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:04,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457462110] [2021-10-24 09:54:04,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457462110] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:04,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:04,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 09:54:04,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023320326] [2021-10-24 09:54:04,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:54:04,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:04,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:54:04,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:54:04,719 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:05,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:05,185 INFO L93 Difference]: Finished difference Result 215 states and 234 transitions. [2021-10-24 09:54:05,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:54:05,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-10-24 09:54:05,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:05,187 INFO L225 Difference]: With dead ends: 215 [2021-10-24 09:54:05,187 INFO L226 Difference]: Without dead ends: 214 [2021-10-24 09:54:05,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:54:05,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-24 09:54:05,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 124. [2021-10-24 09:54:05,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 72 states have (on average 1.875) internal successors, (135), 123 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:05,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2021-10-24 09:54:05,201 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 6 [2021-10-24 09:54:05,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:05,206 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2021-10-24 09:54:05,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:05,206 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2021-10-24 09:54:05,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 09:54:05,207 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:05,207 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:05,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:05,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:05,418 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:05,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:05,419 INFO L82 PathProgramCache]: Analyzing trace with hash -592189806, now seen corresponding path program 1 times [2021-10-24 09:54:05,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:05,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263456388] [2021-10-24 09:54:05,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:05,420 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:05,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:05,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:05,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 09:54:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:05,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:54:05,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:05,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:05,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:05,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263456388] [2021-10-24 09:54:05,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263456388] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:05,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:05,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 09:54:05,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518201188] [2021-10-24 09:54:05,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:54:05,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:05,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:54:05,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:54:05,689 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:06,073 INFO L93 Difference]: Finished difference Result 472 states and 507 transitions. [2021-10-24 09:54:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:54:06,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-10-24 09:54:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:06,077 INFO L225 Difference]: With dead ends: 472 [2021-10-24 09:54:06,077 INFO L226 Difference]: Without dead ends: 472 [2021-10-24 09:54:06,077 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:54:06,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-10-24 09:54:06,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 126. [2021-10-24 09:54:06,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 74 states have (on average 1.8513513513513513) internal successors, (137), 125 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 137 transitions. [2021-10-24 09:54:06,110 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 137 transitions. Word has length 9 [2021-10-24 09:54:06,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:06,110 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 137 transitions. [2021-10-24 09:54:06,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:06,111 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 137 transitions. [2021-10-24 09:54:06,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 09:54:06,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:06,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:06,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:06,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:06,324 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:06,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:06,325 INFO L82 PathProgramCache]: Analyzing trace with hash -592130224, now seen corresponding path program 1 times [2021-10-24 09:54:06,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:06,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186291192] [2021-10-24 09:54:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:06,326 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:06,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:06,333 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:06,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 09:54:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:06,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:54:06,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:06,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:06,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:06,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186291192] [2021-10-24 09:54:06,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186291192] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:06,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:06,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 09:54:06,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588896169] [2021-10-24 09:54:06,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:54:06,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:06,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:54:06,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:54:06,637 INFO L87 Difference]: Start difference. First operand 126 states and 137 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:06,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:06,722 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2021-10-24 09:54:06,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:54:06,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-10-24 09:54:06,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:06,724 INFO L225 Difference]: With dead ends: 125 [2021-10-24 09:54:06,724 INFO L226 Difference]: Without dead ends: 125 [2021-10-24 09:54:06,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:54:06,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-24 09:54:06,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-10-24 09:54:06,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 74 states have (on average 1.837837837837838) internal successors, (136), 124 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:06,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2021-10-24 09:54:06,739 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 9 [2021-10-24 09:54:06,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:06,740 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2021-10-24 09:54:06,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:06,740 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2021-10-24 09:54:06,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 09:54:06,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:06,742 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:06,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:06,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:06,955 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:06,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:06,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1176167536, now seen corresponding path program 1 times [2021-10-24 09:54:06,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:06,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072024595] [2021-10-24 09:54:06,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:06,957 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:06,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:06,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:07,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 09:54:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:07,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:54:07,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:07,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:07,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:07,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:07,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072024595] [2021-10-24 09:54:07,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072024595] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:07,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:07,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-24 09:54:07,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819561483] [2021-10-24 09:54:07,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 09:54:07,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:07,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 09:54:07,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:54:07,470 INFO L87 Difference]: Start difference. First operand 125 states and 136 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:07,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:07,850 INFO L93 Difference]: Finished difference Result 469 states and 506 transitions. [2021-10-24 09:54:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 09:54:07,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 09:54:07,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:07,854 INFO L225 Difference]: With dead ends: 469 [2021-10-24 09:54:07,854 INFO L226 Difference]: Without dead ends: 469 [2021-10-24 09:54:07,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 164.6ms TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-10-24 09:54:07,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-10-24 09:54:07,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 124. [2021-10-24 09:54:07,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 74 states have (on average 1.8243243243243243) internal successors, (135), 123 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 135 transitions. [2021-10-24 09:54:07,863 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 135 transitions. Word has length 10 [2021-10-24 09:54:07,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:07,864 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 135 transitions. [2021-10-24 09:54:07,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:07,864 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 135 transitions. [2021-10-24 09:54:07,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:54:07,865 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:07,865 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:07,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:08,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:08,076 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:08,077 INFO L82 PathProgramCache]: Analyzing trace with hash 2136151760, now seen corresponding path program 1 times [2021-10-24 09:54:08,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:08,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693469678] [2021-10-24 09:54:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:08,078 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:08,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:08,079 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:08,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 09:54:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:08,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:54:08,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:08,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:54:08,296 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-24 09:54:08,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-24 09:54:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:08,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:12,601 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:12,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693469678] [2021-10-24 09:54:12,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693469678] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:12,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:12,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 09:54:12,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249673146] [2021-10-24 09:54:12,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 09:54:12,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:12,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 09:54:12,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=25, Unknown=2, NotChecked=0, Total=42 [2021-10-24 09:54:12,610 INFO L87 Difference]: Start difference. First operand 124 states and 135 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:13,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:13,853 INFO L93 Difference]: Finished difference Result 375 states and 406 transitions. [2021-10-24 09:54:13,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 09:54:13,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 09:54:13,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:13,856 INFO L225 Difference]: With dead ends: 375 [2021-10-24 09:54:13,856 INFO L226 Difference]: Without dead ends: 375 [2021-10-24 09:54:13,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4136.8ms TimeCoverageRelationStatistics Valid=29, Invalid=41, Unknown=2, NotChecked=0, Total=72 [2021-10-24 09:54:13,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-10-24 09:54:13,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 139. [2021-10-24 09:54:13,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 91 states have (on average 1.8021978021978022) internal successors, (164), 138 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2021-10-24 09:54:13,863 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 11 [2021-10-24 09:54:13,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:13,876 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2021-10-24 09:54:13,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:13,876 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2021-10-24 09:54:13,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:54:13,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:13,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:13,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:14,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:14,090 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:14,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:14,091 INFO L82 PathProgramCache]: Analyzing trace with hash 2136151761, now seen corresponding path program 1 times [2021-10-24 09:54:14,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:14,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566973048] [2021-10-24 09:54:14,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:14,092 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:14,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:14,093 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:14,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 09:54:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:14,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 09:54:14,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:14,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:54:14,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:54:14,400 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-24 09:54:14,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-10-24 09:54:14,414 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-24 09:54:14,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-10-24 09:54:14,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:14,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:14,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2021-10-24 09:54:14,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:14,981 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:14,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566973048] [2021-10-24 09:54:14,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566973048] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:14,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:14,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-24 09:54:14,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051952640] [2021-10-24 09:54:14,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 09:54:14,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:14,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 09:54:14,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:54:14,983 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:29,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:29,967 INFO L93 Difference]: Finished difference Result 496 states and 537 transitions. [2021-10-24 09:54:29,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-24 09:54:29,968 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 09:54:29,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:29,971 INFO L225 Difference]: With dead ends: 496 [2021-10-24 09:54:29,971 INFO L226 Difference]: Without dead ends: 496 [2021-10-24 09:54:29,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 3077.2ms TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-10-24 09:54:29,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-24 09:54:30,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 203. [2021-10-24 09:54:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 158 states have (on average 1.7784810126582278) internal successors, (281), 202 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:30,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 281 transitions. [2021-10-24 09:54:30,018 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 281 transitions. Word has length 11 [2021-10-24 09:54:30,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:30,018 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 281 transitions. [2021-10-24 09:54:30,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 281 transitions. [2021-10-24 09:54:30,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:54:30,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:30,019 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:30,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:30,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:30,231 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:30,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:30,232 INFO L82 PathProgramCache]: Analyzing trace with hash -2101455022, now seen corresponding path program 1 times [2021-10-24 09:54:30,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:30,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350779013] [2021-10-24 09:54:30,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:30,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:30,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:30,237 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:30,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 09:54:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:30,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:54:30,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:30,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:54:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:30,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:30,532 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:30,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350779013] [2021-10-24 09:54:30,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350779013] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:30,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:30,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 09:54:30,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168074264] [2021-10-24 09:54:30,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:54:30,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:30,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:54:30,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:54:30,535 INFO L87 Difference]: Start difference. First operand 203 states and 281 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:31,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:31,208 INFO L93 Difference]: Finished difference Result 464 states and 611 transitions. [2021-10-24 09:54:31,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:54:31,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 09:54:31,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:31,212 INFO L225 Difference]: With dead ends: 464 [2021-10-24 09:54:31,212 INFO L226 Difference]: Without dead ends: 464 [2021-10-24 09:54:31,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:54:31,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-24 09:54:31,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 233. [2021-10-24 09:54:31,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 188 states have (on average 1.7287234042553192) internal successors, (325), 232 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 325 transitions. [2021-10-24 09:54:31,236 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 325 transitions. Word has length 11 [2021-10-24 09:54:31,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:31,237 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 325 transitions. [2021-10-24 09:54:31,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:31,237 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 325 transitions. [2021-10-24 09:54:31,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:54:31,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:31,247 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:31,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:31,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:31,462 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:31,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:31,462 INFO L82 PathProgramCache]: Analyzing trace with hash -2101557234, now seen corresponding path program 1 times [2021-10-24 09:54:31,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:31,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687664370] [2021-10-24 09:54:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:31,463 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:31,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:31,467 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:31,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 09:54:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:31,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:54:31,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:31,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:31,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:31,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687664370] [2021-10-24 09:54:31,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687664370] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:31,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:31,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 09:54:31,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394379113] [2021-10-24 09:54:31,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:54:31,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:31,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:54:31,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:54:31,847 INFO L87 Difference]: Start difference. First operand 233 states and 325 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:32,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:32,049 INFO L93 Difference]: Finished difference Result 284 states and 330 transitions. [2021-10-24 09:54:32,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:54:32,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 09:54:32,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:32,051 INFO L225 Difference]: With dead ends: 284 [2021-10-24 09:54:32,052 INFO L226 Difference]: Without dead ends: 284 [2021-10-24 09:54:32,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:54:32,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-24 09:54:32,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 150. [2021-10-24 09:54:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 108 states have (on average 1.6296296296296295) internal successors, (176), 149 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2021-10-24 09:54:32,062 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 11 [2021-10-24 09:54:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:32,062 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2021-10-24 09:54:32,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2021-10-24 09:54:32,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:54:32,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:32,064 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:32,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:32,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:32,276 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:32,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:32,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1421396652, now seen corresponding path program 1 times [2021-10-24 09:54:32,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:32,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306974374] [2021-10-24 09:54:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:32,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:32,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:32,292 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:32,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 09:54:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:32,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:54:32,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:32,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:32,578 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:32,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306974374] [2021-10-24 09:54:32,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306974374] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:32,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:32,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 09:54:32,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642483049] [2021-10-24 09:54:32,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:54:32,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:32,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:54:32,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:54:32,581 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:32,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:32,682 INFO L93 Difference]: Finished difference Result 252 states and 288 transitions. [2021-10-24 09:54:32,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:54:32,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 09:54:32,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:32,690 INFO L225 Difference]: With dead ends: 252 [2021-10-24 09:54:32,690 INFO L226 Difference]: Without dead ends: 250 [2021-10-24 09:54:32,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:54:32,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-24 09:54:32,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 132. [2021-10-24 09:54:32,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 131 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:32,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2021-10-24 09:54:32,698 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 11 [2021-10-24 09:54:32,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:32,698 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2021-10-24 09:54:32,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:32,699 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2021-10-24 09:54:32,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 09:54:32,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:32,700 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:32,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:32,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:32,914 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:32,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:32,914 INFO L82 PathProgramCache]: Analyzing trace with hash -720596011, now seen corresponding path program 1 times [2021-10-24 09:54:32,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:32,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273798304] [2021-10-24 09:54:32,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:32,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:32,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:32,916 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:32,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-24 09:54:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:33,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 09:54:33,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:33,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:37,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:37,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273798304] [2021-10-24 09:54:37,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273798304] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:37,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:37,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-24 09:54:37,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692612935] [2021-10-24 09:54:37,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 09:54:37,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:37,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 09:54:37,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-10-24 09:54:37,561 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:38,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:38,491 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2021-10-24 09:54:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 09:54:38,492 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 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 12 [2021-10-24 09:54:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:38,494 INFO L225 Difference]: With dead ends: 133 [2021-10-24 09:54:38,494 INFO L226 Difference]: Without dead ends: 127 [2021-10-24 09:54:38,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4335.7ms TimeCoverageRelationStatistics Valid=32, Invalid=76, Unknown=2, NotChecked=0, Total=110 [2021-10-24 09:54:38,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-24 09:54:38,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-24 09:54:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 86 states have (on average 1.686046511627907) internal successors, (145), 126 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 145 transitions. [2021-10-24 09:54:38,499 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 145 transitions. Word has length 12 [2021-10-24 09:54:38,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:38,499 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 145 transitions. [2021-10-24 09:54:38,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:38,499 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 145 transitions. [2021-10-24 09:54:38,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 09:54:38,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:38,509 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:38,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:38,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:38,709 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:38,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:38,710 INFO L82 PathProgramCache]: Analyzing trace with hash 176240348, now seen corresponding path program 1 times [2021-10-24 09:54:38,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:38,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939404741] [2021-10-24 09:54:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:38,711 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:38,713 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:38,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-24 09:54:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:38,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:54:38,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:39,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-24 09:54:39,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-10-24 09:54:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:39,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:39,192 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:39,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939404741] [2021-10-24 09:54:39,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939404741] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:39,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:39,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-24 09:54:39,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733096079] [2021-10-24 09:54:39,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:54:39,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:39,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:54:39,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:54:39,196 INFO L87 Difference]: Start difference. First operand 127 states and 145 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:39,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:39,463 INFO L93 Difference]: Finished difference Result 242 states and 275 transitions. [2021-10-24 09:54:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 09:54:39,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-24 09:54:39,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:39,466 INFO L225 Difference]: With dead ends: 242 [2021-10-24 09:54:39,466 INFO L226 Difference]: Without dead ends: 242 [2021-10-24 09:54:39,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:54:39,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-24 09:54:39,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 132. [2021-10-24 09:54:39,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 91 states have (on average 1.6483516483516483) internal successors, (150), 131 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 150 transitions. [2021-10-24 09:54:39,473 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 150 transitions. Word has length 16 [2021-10-24 09:54:39,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:39,474 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 150 transitions. [2021-10-24 09:54:39,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:39,474 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 150 transitions. [2021-10-24 09:54:39,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 09:54:39,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:39,475 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:39,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:39,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:39,688 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:39,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:39,688 INFO L82 PathProgramCache]: Analyzing trace with hash 176237825, now seen corresponding path program 1 times [2021-10-24 09:54:39,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:39,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164779396] [2021-10-24 09:54:39,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:39,691 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:39,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:39,692 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:39,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-24 09:54:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:39,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 09:54:39,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:39,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:54:40,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-24 09:54:40,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-24 09:54:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:40,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:40,266 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:40,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164779396] [2021-10-24 09:54:40,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164779396] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:40,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:40,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 09:54:40,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869034134] [2021-10-24 09:54:40,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:54:40,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:40,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:54:40,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:54:40,269 INFO L87 Difference]: Start difference. First operand 132 states and 150 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:41,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:41,730 INFO L93 Difference]: Finished difference Result 218 states and 243 transitions. [2021-10-24 09:54:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 09:54:41,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-24 09:54:41,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:41,733 INFO L225 Difference]: With dead ends: 218 [2021-10-24 09:54:41,733 INFO L226 Difference]: Without dead ends: 218 [2021-10-24 09:54:41,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 182.3ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-24 09:54:41,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-24 09:54:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 134. [2021-10-24 09:54:41,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 93 states have (on average 1.6451612903225807) internal successors, (153), 133 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2021-10-24 09:54:41,742 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 16 [2021-10-24 09:54:41,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:41,744 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2021-10-24 09:54:41,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2021-10-24 09:54:41,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 09:54:41,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:41,747 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:41,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:41,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:41,960 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:41,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:41,960 INFO L82 PathProgramCache]: Analyzing trace with hash 176237826, now seen corresponding path program 1 times [2021-10-24 09:54:41,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:41,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280653250] [2021-10-24 09:54:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:41,961 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:41,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:41,962 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:42,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-24 09:54:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:42,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 09:54:42,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:42,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:54:42,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-24 09:54:42,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 09:54:42,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-10-24 09:54:42,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-10-24 09:54:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:42,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:43,061 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:43,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280653250] [2021-10-24 09:54:43,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280653250] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:43,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:43,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-24 09:54:43,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311127892] [2021-10-24 09:54:43,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-24 09:54:43,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:43,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-24 09:54:43,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-24 09:54:43,064 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:45,067 INFO L93 Difference]: Finished difference Result 288 states and 323 transitions. [2021-10-24 09:54:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-24 09:54:45,068 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-24 09:54:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:45,070 INFO L225 Difference]: With dead ends: 288 [2021-10-24 09:54:45,070 INFO L226 Difference]: Without dead ends: 288 [2021-10-24 09:54:45,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 838.9ms TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-10-24 09:54:45,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-24 09:54:45,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 134. [2021-10-24 09:54:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 93 states have (on average 1.6344086021505377) internal successors, (152), 133 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:45,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 152 transitions. [2021-10-24 09:54:45,077 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 152 transitions. Word has length 16 [2021-10-24 09:54:45,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:45,078 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 152 transitions. [2021-10-24 09:54:45,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:45,078 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 152 transitions. [2021-10-24 09:54:45,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 09:54:45,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:45,079 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:45,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:45,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:45,294 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:45,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:45,294 INFO L82 PathProgramCache]: Analyzing trace with hash -633106278, now seen corresponding path program 1 times [2021-10-24 09:54:45,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:45,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256065547] [2021-10-24 09:54:45,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:45,295 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:45,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:45,296 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:45,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-24 09:54:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:45,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 09:54:45,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:45,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:46,026 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:46,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256065547] [2021-10-24 09:54:46,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256065547] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:46,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:46,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-10-24 09:54:46,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325476105] [2021-10-24 09:54:46,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 09:54:46,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:46,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 09:54:46,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 09:54:46,028 INFO L87 Difference]: Start difference. First operand 134 states and 152 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:46,246 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2021-10-24 09:54:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 09:54:46,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-24 09:54:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:46,248 INFO L225 Difference]: With dead ends: 133 [2021-10-24 09:54:46,248 INFO L226 Difference]: Without dead ends: 133 [2021-10-24 09:54:46,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.5ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-24 09:54:46,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-24 09:54:46,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-10-24 09:54:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.6129032258064515) internal successors, (150), 132 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:46,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 150 transitions. [2021-10-24 09:54:46,253 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 150 transitions. Word has length 16 [2021-10-24 09:54:46,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:46,253 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 150 transitions. [2021-10-24 09:54:46,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:46,254 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 150 transitions. [2021-10-24 09:54:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 09:54:46,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:46,254 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:46,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:46,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:46,455 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:46,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:46,455 INFO L82 PathProgramCache]: Analyzing trace with hash -633108801, now seen corresponding path program 1 times [2021-10-24 09:54:46,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:46,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649029588] [2021-10-24 09:54:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:46,456 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:46,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:46,458 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:46,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-24 09:54:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:46,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 09:54:46,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:46,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 09:54:46,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 09:54:46,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-10-24 09:54:46,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-24 09:54:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:46,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:47,042 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:47,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649029588] [2021-10-24 09:54:47,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649029588] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:47,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:47,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-24 09:54:47,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524005705] [2021-10-24 09:54:47,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:54:47,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:47,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:54:47,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:54:47,044 INFO L87 Difference]: Start difference. First operand 133 states and 150 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:47,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:47,512 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2021-10-24 09:54:47,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 09:54:47,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-24 09:54:47,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:47,514 INFO L225 Difference]: With dead ends: 135 [2021-10-24 09:54:47,514 INFO L226 Difference]: Without dead ends: 135 [2021-10-24 09:54:47,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 276.4ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:54:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-24 09:54:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 129. [2021-10-24 09:54:47,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 91 states have (on average 1.5934065934065933) internal successors, (145), 128 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:47,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 145 transitions. [2021-10-24 09:54:47,518 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 145 transitions. Word has length 16 [2021-10-24 09:54:47,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:47,518 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 145 transitions. [2021-10-24 09:54:47,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:47,519 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 145 transitions. [2021-10-24 09:54:47,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-24 09:54:47,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:47,519 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:54:47,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:47,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:47,737 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:47,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:47,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1860825987, now seen corresponding path program 1 times [2021-10-24 09:54:47,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:47,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063035308] [2021-10-24 09:54:47,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:47,739 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:47,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:47,741 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:47,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-24 09:54:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:48,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-24 09:54:48,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:48,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:54:48,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:54:48,242 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-24 09:54:48,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-10-24 09:54:48,285 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-24 09:54:48,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2021-10-24 09:54:48,542 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-24 09:54:48,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 33 [2021-10-24 09:54:48,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-10-24 09:54:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:48,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:54,548 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-24 09:54:54,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 63 [2021-10-24 09:54:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:54,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:54,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063035308] [2021-10-24 09:54:54,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063035308] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:54,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:54,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12 [2021-10-24 09:54:54,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442006796] [2021-10-24 09:54:54,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-24 09:54:54,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:54,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-24 09:54:54,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=116, Unknown=2, NotChecked=0, Total=156 [2021-10-24 09:54:54,604 INFO L87 Difference]: Start difference. First operand 129 states and 145 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:56,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:56,264 INFO L93 Difference]: Finished difference Result 158 states and 167 transitions. [2021-10-24 09:54:56,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 09:54:56,265 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-24 09:54:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:56,267 INFO L225 Difference]: With dead ends: 158 [2021-10-24 09:54:56,267 INFO L226 Difference]: Without dead ends: 158 [2021-10-24 09:54:56,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 5319.7ms TimeCoverageRelationStatistics Valid=87, Invalid=217, Unknown=2, NotChecked=0, Total=306 [2021-10-24 09:54:56,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-24 09:54:56,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 128. [2021-10-24 09:54:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 91 states have (on average 1.5824175824175823) internal successors, (144), 127 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 144 transitions. [2021-10-24 09:54:56,273 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 144 transitions. Word has length 18 [2021-10-24 09:54:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:56,273 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 144 transitions. [2021-10-24 09:54:56,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:56,274 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 144 transitions. [2021-10-24 09:54:56,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-24 09:54:56,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:56,275 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] [2021-10-24 09:54:56,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:56,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:56,485 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:56,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:56,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1547378243, now seen corresponding path program 1 times [2021-10-24 09:54:56,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:56,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448618043] [2021-10-24 09:54:56,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:56,486 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:56,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:56,488 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:56,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-24 09:54:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:56,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 09:54:56,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:56,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:56,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:57,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:57,037 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:57,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448618043] [2021-10-24 09:54:57,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448618043] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:57,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:57,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 09:54:57,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956020856] [2021-10-24 09:54:57,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:54:57,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:57,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:54:57,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:54:57,046 INFO L87 Difference]: Start difference. First operand 128 states and 144 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:57,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:57,362 INFO L93 Difference]: Finished difference Result 151 states and 161 transitions. [2021-10-24 09:54:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:54:57,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-24 09:54:57,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:57,363 INFO L225 Difference]: With dead ends: 151 [2021-10-24 09:54:57,363 INFO L226 Difference]: Without dead ends: 151 [2021-10-24 09:54:57,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:54:57,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-24 09:54:57,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 127. [2021-10-24 09:54:57,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 91 states have (on average 1.5714285714285714) internal successors, (143), 126 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:57,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 143 transitions. [2021-10-24 09:54:57,368 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 143 transitions. Word has length 20 [2021-10-24 09:54:57,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:57,368 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 143 transitions. [2021-10-24 09:54:57,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:57,368 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 143 transitions. [2021-10-24 09:54:57,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-24 09:54:57,369 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:57,369 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] [2021-10-24 09:54:57,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:57,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:57,582 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:57,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:57,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1547378244, now seen corresponding path program 1 times [2021-10-24 09:54:57,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:57,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580567364] [2021-10-24 09:54:57,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:57,585 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:57,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:57,586 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:57,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-24 09:54:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:58,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 09:54:58,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:58,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:54:58,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-24 09:54:58,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:58,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:54:58,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580567364] [2021-10-24 09:54:58,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580567364] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:54:58,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:54:58,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-24 09:54:58,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890150483] [2021-10-24 09:54:58,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 09:54:58,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:54:58,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 09:54:58,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:54:58,596 INFO L87 Difference]: Start difference. First operand 127 states and 143 transitions. Second operand has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:54:58,996 INFO L93 Difference]: Finished difference Result 132 states and 147 transitions. [2021-10-24 09:54:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 09:54:58,997 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-24 09:54:58,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:54:58,998 INFO L225 Difference]: With dead ends: 132 [2021-10-24 09:54:58,998 INFO L226 Difference]: Without dead ends: 132 [2021-10-24 09:54:58,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 271.1ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-24 09:54:58,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-24 09:54:59,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 126. [2021-10-24 09:54:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 91 states have (on average 1.5604395604395604) internal successors, (142), 125 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:59,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 142 transitions. [2021-10-24 09:54:59,003 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 142 transitions. Word has length 20 [2021-10-24 09:54:59,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:54:59,004 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 142 transitions. [2021-10-24 09:54:59,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:54:59,004 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 142 transitions. [2021-10-24 09:54:59,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-24 09:54:59,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:54:59,008 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] [2021-10-24 09:54:59,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-24 09:54:59,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:54:59,209 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:54:59,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:54:59,209 INFO L82 PathProgramCache]: Analyzing trace with hash -153313729, now seen corresponding path program 1 times [2021-10-24 09:54:59,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:54:59,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445111201] [2021-10-24 09:54:59,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:54:59,210 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:54:59,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:54:59,211 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:54:59,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-24 09:54:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:54:59,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 09:54:59,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:54:59,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:54:59,540 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-24 09:54:59,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-10-24 09:54:59,770 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-24 09:54:59,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 36 [2021-10-24 09:54:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:54:59,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:55:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:04,007 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:55:04,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445111201] [2021-10-24 09:55:04,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445111201] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:55:04,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:55:04,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 8 [2021-10-24 09:55:04,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337564563] [2021-10-24 09:55:04,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 09:55:04,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:55:04,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 09:55:04,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2021-10-24 09:55:04,009 INFO L87 Difference]: Start difference. First operand 126 states and 142 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:55:32,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:55:32,811 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2021-10-24 09:55:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-24 09:55:32,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-24 09:55:32,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:55:32,813 INFO L225 Difference]: With dead ends: 153 [2021-10-24 09:55:32,813 INFO L226 Difference]: Without dead ends: 153 [2021-10-24 09:55:32,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 10257.4ms TimeCoverageRelationStatistics Valid=54, Invalid=99, Unknown=3, NotChecked=0, Total=156 [2021-10-24 09:55:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-24 09:55:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2021-10-24 09:55:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 128 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:55:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 145 transitions. [2021-10-24 09:55:32,817 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 145 transitions. Word has length 20 [2021-10-24 09:55:32,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:55:32,818 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 145 transitions. [2021-10-24 09:55:32,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:55:32,818 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 145 transitions. [2021-10-24 09:55:32,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-24 09:55:32,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:55:32,819 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] [2021-10-24 09:55:32,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-24 09:55:33,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:55:33,031 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:55:33,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:55:33,032 INFO L82 PathProgramCache]: Analyzing trace with hash -457758072, now seen corresponding path program 1 times [2021-10-24 09:55:33,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:55:33,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306218955] [2021-10-24 09:55:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:55:33,032 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:55:33,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:55:33,034 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:55:33,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-24 09:55:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:55:33,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 09:55:33,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:55:38,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:38,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:55:54,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:55:54,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:55:54,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306218955] [2021-10-24 09:55:54,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306218955] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:55:54,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:55:54,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-24 09:55:54,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134843287] [2021-10-24 09:55:54,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-24 09:55:54,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:55:54,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-24 09:55:54,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=162, Unknown=9, NotChecked=0, Total=210 [2021-10-24 09:55:54,837 INFO L87 Difference]: Start difference. First operand 129 states and 145 transitions. Second operand has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:06,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:56:06,665 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2021-10-24 09:56:06,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 09:56:06,665 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 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 21 [2021-10-24 09:56:06,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:56:06,666 INFO L225 Difference]: With dead ends: 130 [2021-10-24 09:56:06,666 INFO L226 Difference]: Without dead ends: 118 [2021-10-24 09:56:06,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 23035.6ms TimeCoverageRelationStatistics Valid=68, Invalid=264, Unknown=10, NotChecked=0, Total=342 [2021-10-24 09:56:06,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-24 09:56:06,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-24 09:56:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 83 states have (on average 1.6024096385542168) internal successors, (133), 117 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 133 transitions. [2021-10-24 09:56:06,670 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 133 transitions. Word has length 21 [2021-10-24 09:56:06,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:56:06,671 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 133 transitions. [2021-10-24 09:56:06,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:06,671 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 133 transitions. [2021-10-24 09:56:06,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-24 09:56:06,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:06,672 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] [2021-10-24 09:56:06,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-24 09:56:06,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:56:06,885 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:56:06,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:06,885 INFO L82 PathProgramCache]: Analyzing trace with hash 971808068, now seen corresponding path program 1 times [2021-10-24 09:56:06,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:56:06,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647439534] [2021-10-24 09:56:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:06,886 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:56:06,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:56:06,887 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:56:06,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-24 09:56:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:56:07,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-24 09:56:07,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:56:07,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-24 09:56:07,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-10-24 09:56:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:07,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:56:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:07,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:56:07,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647439534] [2021-10-24 09:56:07,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647439534] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:56:07,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:56:07,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 12 [2021-10-24 09:56:07,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110817143] [2021-10-24 09:56:07,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-24 09:56:07,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:56:07,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-24 09:56:07,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-24 09:56:07,727 INFO L87 Difference]: Start difference. First operand 118 states and 133 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:56:08,650 INFO L93 Difference]: Finished difference Result 176 states and 188 transitions. [2021-10-24 09:56:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-24 09:56:08,658 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-24 09:56:08,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:56:08,660 INFO L225 Difference]: With dead ends: 176 [2021-10-24 09:56:08,660 INFO L226 Difference]: Without dead ends: 176 [2021-10-24 09:56:08,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 421.2ms TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-10-24 09:56:08,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-24 09:56:08,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 117. [2021-10-24 09:56:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 83 states have (on average 1.5903614457831325) internal successors, (132), 116 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2021-10-24 09:56:08,664 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 22 [2021-10-24 09:56:08,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:56:08,665 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2021-10-24 09:56:08,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:08,665 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2021-10-24 09:56:08,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-24 09:56:08,666 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:08,666 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] [2021-10-24 09:56:08,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-24 09:56:08,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:56:08,876 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:56:08,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:08,876 INFO L82 PathProgramCache]: Analyzing trace with hash 971808069, now seen corresponding path program 1 times [2021-10-24 09:56:08,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:56:08,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046325930] [2021-10-24 09:56:08,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:08,877 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:56:08,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:56:08,878 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:56:08,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-24 09:56:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:56:09,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-24 09:56:09,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:56:09,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-24 09:56:09,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 09:56:09,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-24 09:56:09,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-10-24 09:56:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:09,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:56:10,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-24 09:56:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:10,263 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:56:10,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046325930] [2021-10-24 09:56:10,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046325930] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:56:10,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:56:10,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 17 [2021-10-24 09:56:10,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329436034] [2021-10-24 09:56:10,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-24 09:56:10,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:56:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-24 09:56:10,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-10-24 09:56:10,267 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:11,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:56:11,761 INFO L93 Difference]: Finished difference Result 163 states and 180 transitions. [2021-10-24 09:56:11,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-24 09:56:11,763 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-24 09:56:11,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:56:11,764 INFO L225 Difference]: With dead ends: 163 [2021-10-24 09:56:11,764 INFO L226 Difference]: Without dead ends: 163 [2021-10-24 09:56:11,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 963.4ms TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-10-24 09:56:11,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-24 09:56:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 116. [2021-10-24 09:56:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 83 states have (on average 1.5783132530120483) internal successors, (131), 115 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:11,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2021-10-24 09:56:11,768 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 22 [2021-10-24 09:56:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:56:11,769 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2021-10-24 09:56:11,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:11,769 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2021-10-24 09:56:11,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-24 09:56:11,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:11,770 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] [2021-10-24 09:56:11,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-24 09:56:11,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:56:11,983 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:56:11,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:11,985 INFO L82 PathProgramCache]: Analyzing trace with hash 61279070, now seen corresponding path program 1 times [2021-10-24 09:56:11,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:56:11,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629979878] [2021-10-24 09:56:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:11,986 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:56:11,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:56:11,987 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:56:12,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-24 09:56:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:56:12,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-24 09:56:12,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:56:12,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:56:12,531 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-24 09:56:12,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-10-24 09:56:12,707 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-10-24 09:56:12,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 50 [2021-10-24 09:56:12,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-10-24 09:56:13,423 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-24 09:56:13,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 44 [2021-10-24 09:56:13,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:13,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 53 [2021-10-24 09:56:13,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 09:56:13,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 103 [2021-10-24 09:56:14,273 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:14,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 60 [2021-10-24 09:56:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:14,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:56:14,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:14,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-24 09:56:26,159 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) .cse2))) (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)) v_DerPreprocessor_1))))) (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset) c_ULTIMATE.start_entry_point_~intf~2.base))) c_ULTIMATE.start_entry_point_~intf~2.base) .cse2)))))))))) (_ bv1 1)))) is different from false [2021-10-24 09:56:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:36,202 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:56:36,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629979878] [2021-10-24 09:56:36,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629979878] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:56:36,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:56:36,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 26 [2021-10-24 09:56:36,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083750916] [2021-10-24 09:56:36,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-24 09:56:36,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:56:36,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-24 09:56:36,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=563, Unknown=8, NotChecked=48, Total=702 [2021-10-24 09:56:36,204 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:43,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:56:43,033 INFO L93 Difference]: Finished difference Result 174 states and 186 transitions. [2021-10-24 09:56:43,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-24 09:56:43,033 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 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 23 [2021-10-24 09:56:43,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:56:43,034 INFO L225 Difference]: With dead ends: 174 [2021-10-24 09:56:43,034 INFO L226 Difference]: Without dead ends: 174 [2021-10-24 09:56:43,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 24550.1ms TimeCoverageRelationStatistics Valid=291, Invalid=1111, Unknown=8, NotChecked=72, Total=1482 [2021-10-24 09:56:43,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-24 09:56:43,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 115. [2021-10-24 09:56:43,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 83 states have (on average 1.5662650602409638) internal successors, (130), 114 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:43,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2021-10-24 09:56:43,037 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 23 [2021-10-24 09:56:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:56:43,038 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2021-10-24 09:56:43,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:56:43,039 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2021-10-24 09:56:43,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-24 09:56:43,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:56:43,039 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] [2021-10-24 09:56:43,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-24 09:56:43,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:56:43,240 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:56:43,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:56:43,240 INFO L82 PathProgramCache]: Analyzing trace with hash 61279071, now seen corresponding path program 1 times [2021-10-24 09:56:43,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:56:43,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110929684] [2021-10-24 09:56:43,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:56:43,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:56:43,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:56:43,241 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:56:43,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-24 09:56:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:56:43,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-24 09:56:43,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:56:43,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:56:43,685 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-24 09:56:43,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-10-24 09:56:43,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:56:43,895 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-24 09:56:43,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-10-24 09:56:44,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 09:56:44,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-24 09:56:44,409 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-10-24 09:56:44,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 93 [2021-10-24 09:56:44,435 INFO L354 Elim1Store]: treesize reduction 55, result has 14.1 percent of original size [2021-10-24 09:56:44,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 74 [2021-10-24 09:56:44,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:44,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-10-24 09:56:44,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:56:44,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-10-24 09:56:45,124 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-10-24 09:56:45,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-10-24 09:56:45,144 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-10-24 09:56:45,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-10-24 09:56:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:56:45,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:56:46,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:46,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-10-24 09:56:46,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:56:46,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-10-24 09:56:57,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 89 [2021-10-24 09:57:03,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:57:03,109 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:57:03,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110929684] [2021-10-24 09:57:03,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110929684] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:57:03,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:57:03,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 16] imperfect sequences [] total 30 [2021-10-24 09:57:03,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244910894] [2021-10-24 09:57:03,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-24 09:57:03,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:57:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-24 09:57:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=829, Unknown=1, NotChecked=0, Total=930 [2021-10-24 09:57:03,110 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:33,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:33,129 INFO L93 Difference]: Finished difference Result 207 states and 218 transitions. [2021-10-24 09:58:33,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-24 09:58:33,131 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 0 states have call successors, (0), 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 23 [2021-10-24 09:58:33,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:33,132 INFO L225 Difference]: With dead ends: 207 [2021-10-24 09:58:33,133 INFO L226 Difference]: Without dead ends: 207 [2021-10-24 09:58:33,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 28324.4ms TimeCoverageRelationStatistics Valid=439, Invalid=1721, Unknown=2, NotChecked=0, Total=2162 [2021-10-24 09:58:33,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-10-24 09:58:33,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 114. [2021-10-24 09:58:33,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 83 states have (on average 1.5542168674698795) internal successors, (129), 113 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:33,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2021-10-24 09:58:33,140 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 23 [2021-10-24 09:58:33,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:33,140 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2021-10-24 09:58:33,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:33,141 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2021-10-24 09:58:33,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 09:58:33,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:33,142 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, 1] [2021-10-24 09:58:33,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-24 09:58:33,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:58:33,359 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:58:33,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:33,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1240354625, now seen corresponding path program 1 times [2021-10-24 09:58:33,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:58:33,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053211839] [2021-10-24 09:58:33,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:33,361 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:58:33,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:58:33,364 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:58:33,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-24 09:58:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:34,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 09:58:34,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:58:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:34,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:58:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:34,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:58:34,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053211839] [2021-10-24 09:58:34,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053211839] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:34,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:34,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 09:58:34,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228142246] [2021-10-24 09:58:34,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:58:34,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:58:34,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:58:34,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:58:34,323 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:34,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:34,998 INFO L93 Difference]: Finished difference Result 171 states and 183 transitions. [2021-10-24 09:58:34,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:58:34,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-24 09:58:34,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:35,000 INFO L225 Difference]: With dead ends: 171 [2021-10-24 09:58:35,001 INFO L226 Difference]: Without dead ends: 171 [2021-10-24 09:58:35,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:58:35,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-24 09:58:35,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 112. [2021-10-24 09:58:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 83 states have (on average 1.5301204819277108) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2021-10-24 09:58:35,005 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 25 [2021-10-24 09:58:35,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:35,006 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2021-10-24 09:58:35,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:35,006 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2021-10-24 09:58:35,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 09:58:35,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:35,007 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, 1] [2021-10-24 09:58:35,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-24 09:58:35,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:58:35,232 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:58:35,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:35,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1240354624, now seen corresponding path program 1 times [2021-10-24 09:58:35,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:58:35,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465728750] [2021-10-24 09:58:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:35,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:58:35,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:58:35,236 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:58:35,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-24 09:58:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:35,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-24 09:58:35,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:58:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:36,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:58:36,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-24 09:58:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:37,275 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:58:37,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465728750] [2021-10-24 09:58:37,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465728750] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:37,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:37,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-24 09:58:37,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201076874] [2021-10-24 09:58:37,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-24 09:58:37,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:58:37,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-24 09:58:37,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-24 09:58:37,277 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:38,192 INFO L93 Difference]: Finished difference Result 157 states and 174 transitions. [2021-10-24 09:58:38,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 09:58:38,194 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-24 09:58:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:38,196 INFO L225 Difference]: With dead ends: 157 [2021-10-24 09:58:38,196 INFO L226 Difference]: Without dead ends: 157 [2021-10-24 09:58:38,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 640.7ms TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-10-24 09:58:38,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-24 09:58:38,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 110. [2021-10-24 09:58:38,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 83 states have (on average 1.5060240963855422) internal successors, (125), 109 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:38,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2021-10-24 09:58:38,200 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 25 [2021-10-24 09:58:38,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:38,200 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2021-10-24 09:58:38,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2021-10-24 09:58:38,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 09:58:38,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:38,201 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, 1, 1, 1, 1] [2021-10-24 09:58:38,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-24 09:58:38,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:58:38,402 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:58:38,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:38,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1793278796, now seen corresponding path program 1 times [2021-10-24 09:58:38,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:58:38,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866534560] [2021-10-24 09:58:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:38,405 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:58:38,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:58:38,406 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:58:38,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-24 09:58:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:39,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 09:58:39,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:58:39,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:58:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:39,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:58:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:39,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:58:39,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866534560] [2021-10-24 09:58:39,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866534560] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:39,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:39,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-24 09:58:39,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672815956] [2021-10-24 09:58:39,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:58:39,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:58:39,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:58:39,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:58:39,551 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:40,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:40,354 INFO L93 Difference]: Finished difference Result 176 states and 197 transitions. [2021-10-24 09:58:40,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:58:40,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-24 09:58:40,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:40,356 INFO L225 Difference]: With dead ends: 176 [2021-10-24 09:58:40,356 INFO L226 Difference]: Without dead ends: 176 [2021-10-24 09:58:40,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 162.0ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-24 09:58:40,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-24 09:58:40,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 106. [2021-10-24 09:58:40,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 105 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:40,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2021-10-24 09:58:40,361 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 28 [2021-10-24 09:58:40,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:40,361 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2021-10-24 09:58:40,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:40,361 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2021-10-24 09:58:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 09:58:40,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:40,362 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, 1, 1, 1, 1] [2021-10-24 09:58:40,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-24 09:58:40,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:58:40,574 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:58:40,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:40,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1793278795, now seen corresponding path program 1 times [2021-10-24 09:58:40,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:58:40,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391088408] [2021-10-24 09:58:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:40,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:58:40,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:58:40,600 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:58:40,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-24 09:58:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:41,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-24 09:58:41,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:58:41,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:58:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:41,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:58:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:42,823 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:58:42,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391088408] [2021-10-24 09:58:42,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391088408] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:42,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:42,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-24 09:58:42,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183396605] [2021-10-24 09:58:42,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 09:58:42,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:58:42,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 09:58:42,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:58:42,826 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:44,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:44,653 INFO L93 Difference]: Finished difference Result 196 states and 215 transitions. [2021-10-24 09:58:44,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:58:44,654 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 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 28 [2021-10-24 09:58:44,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:44,656 INFO L225 Difference]: With dead ends: 196 [2021-10-24 09:58:44,656 INFO L226 Difference]: Without dead ends: 196 [2021-10-24 09:58:44,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 985.6ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-24 09:58:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-24 09:58:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 102. [2021-10-24 09:58:44,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 83 states have (on average 1.4096385542168675) internal successors, (117), 101 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:44,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2021-10-24 09:58:44,661 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 28 [2021-10-24 09:58:44,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:44,661 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2021-10-24 09:58:44,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:44,661 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2021-10-24 09:58:44,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-24 09:58:44,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:44,662 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:44,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-24 09:58:44,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:58:44,889 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:58:44,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:44,890 INFO L82 PathProgramCache]: Analyzing trace with hash 941939384, now seen corresponding path program 1 times [2021-10-24 09:58:44,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:58:44,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701305683] [2021-10-24 09:58:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:44,890 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:58:44,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:58:44,892 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:58:44,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-24 09:58:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:45,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 09:58:45,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:58:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:45,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:58:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:46,054 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:58:46,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701305683] [2021-10-24 09:58:46,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701305683] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:46,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:46,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 09:58:46,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120653466] [2021-10-24 09:58:46,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:58:46,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:58:46,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:58:46,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:58:46,056 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:46,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:46,500 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-10-24 09:58:46,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:58:46,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-10-24 09:58:46,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:46,502 INFO L225 Difference]: With dead ends: 140 [2021-10-24 09:58:46,502 INFO L226 Difference]: Without dead ends: 140 [2021-10-24 09:58:46,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:58:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-24 09:58:46,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 102. [2021-10-24 09:58:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 83 states have (on average 1.3975903614457832) internal successors, (116), 101 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2021-10-24 09:58:46,506 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 31 [2021-10-24 09:58:46,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:46,506 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2021-10-24 09:58:46,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2021-10-24 09:58:46,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-24 09:58:46,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:46,507 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:46,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-24 09:58:46,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:58:46,735 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:58:46,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:46,735 INFO L82 PathProgramCache]: Analyzing trace with hash 941939385, now seen corresponding path program 1 times [2021-10-24 09:58:46,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:58:46,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939964876] [2021-10-24 09:58:46,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:46,736 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:58:46,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:58:46,739 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:58:46,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-24 09:58:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:47,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 09:58:47,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:58:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:47,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:58:48,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-24 09:58:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:48,531 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:58:48,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939964876] [2021-10-24 09:58:48,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939964876] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:48,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:48,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-24 09:58:48,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767146612] [2021-10-24 09:58:48,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-24 09:58:48,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:58:48,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-24 09:58:48,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:58:48,533 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:49,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:49,037 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2021-10-24 09:58:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 09:58:49,038 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-24 09:58:49,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:49,039 INFO L225 Difference]: With dead ends: 120 [2021-10-24 09:58:49,040 INFO L226 Difference]: Without dead ends: 120 [2021-10-24 09:58:49,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 376.8ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-24 09:58:49,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-24 09:58:49,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 101. [2021-10-24 09:58:49,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 83 states have (on average 1.3734939759036144) internal successors, (114), 100 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2021-10-24 09:58:49,044 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 31 [2021-10-24 09:58:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:49,045 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2021-10-24 09:58:49,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:49,045 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2021-10-24 09:58:49,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-24 09:58:49,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:49,046 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:49,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-24 09:58:49,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:58:49,258 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:58:49,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:49,258 INFO L82 PathProgramCache]: Analyzing trace with hash -864617255, now seen corresponding path program 1 times [2021-10-24 09:58:49,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:58:49,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763647402] [2021-10-24 09:58:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:49,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:58:49,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:58:49,261 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:58:49,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-24 09:58:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:50,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:58:50,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:58:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:50,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:58:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:50,202 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:58:50,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763647402] [2021-10-24 09:58:50,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763647402] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:50,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:50,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 09:58:50,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762466776] [2021-10-24 09:58:50,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:58:50,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:58:50,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:58:50,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:58:50,205 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:50,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:50,237 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2021-10-24 09:58:50,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:58:50,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-10-24 09:58:50,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:50,246 INFO L225 Difference]: With dead ends: 151 [2021-10-24 09:58:50,246 INFO L226 Difference]: Without dead ends: 151 [2021-10-24 09:58:50,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:58:50,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-24 09:58:50,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 105. [2021-10-24 09:58:50,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 104 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:50,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 118 transitions. [2021-10-24 09:58:50,254 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 118 transitions. Word has length 32 [2021-10-24 09:58:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:50,254 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 118 transitions. [2021-10-24 09:58:50,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:50,255 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 118 transitions. [2021-10-24 09:58:50,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-24 09:58:50,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:50,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:50,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-24 09:58:50,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:58:50,472 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:58:50,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:50,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1093510787, now seen corresponding path program 1 times [2021-10-24 09:58:50,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:58:50,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027298273] [2021-10-24 09:58:50,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:50,474 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:58:50,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:58:50,475 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:58:50,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-24 09:58:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:51,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:58:51,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:58:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:51,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:58:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:51,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:58:51,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027298273] [2021-10-24 09:58:51,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027298273] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:51,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:51,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 09:58:51,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775269989] [2021-10-24 09:58:51,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:58:51,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:58:51,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:58:51,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:58:51,624 INFO L87 Difference]: Start difference. First operand 105 states and 118 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:58:51,664 INFO L93 Difference]: Finished difference Result 195 states and 213 transitions. [2021-10-24 09:58:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:58:51,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-24 09:58:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:58:51,666 INFO L225 Difference]: With dead ends: 195 [2021-10-24 09:58:51,667 INFO L226 Difference]: Without dead ends: 195 [2021-10-24 09:58:51,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:58:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-24 09:58:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 107. [2021-10-24 09:58:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 89 states have (on average 1.348314606741573) internal successors, (120), 106 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:51,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2021-10-24 09:58:51,674 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 33 [2021-10-24 09:58:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:58:51,674 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2021-10-24 09:58:51,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:58:51,675 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2021-10-24 09:58:51,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-24 09:58:51,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:58:51,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:58:51,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-24 09:58:51,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:58:51,876 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:58:51,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:58:51,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1034347815, now seen corresponding path program 1 times [2021-10-24 09:58:51,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:58:51,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189473597] [2021-10-24 09:58:51,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:58:51,877 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:58:51,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:58:51,878 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:58:51,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-24 09:58:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:58:52,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-24 09:58:52,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:58:52,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-24 09:58:53,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:58:53,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-10-24 09:58:53,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-10-24 09:58:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:53,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:58:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:58:58,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:58:58,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189473597] [2021-10-24 09:58:58,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189473597] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:58:58,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:58:58,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 8] imperfect sequences [] total 16 [2021-10-24 09:58:58,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617521069] [2021-10-24 09:58:58,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-24 09:58:58,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:58:58,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-24 09:58:58,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=224, Unknown=2, NotChecked=0, Total=272 [2021-10-24 09:58:58,209 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand has 17 states, 16 states have (on average 3.875) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:59:01,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:59:01,341 INFO L93 Difference]: Finished difference Result 198 states and 209 transitions. [2021-10-24 09:59:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-24 09:59:01,342 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.875) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 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 33 [2021-10-24 09:59:01,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:59:01,343 INFO L225 Difference]: With dead ends: 198 [2021-10-24 09:59:01,344 INFO L226 Difference]: Without dead ends: 198 [2021-10-24 09:59:01,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 5999.3ms TimeCoverageRelationStatistics Valid=230, Invalid=580, Unknown=2, NotChecked=0, Total=812 [2021-10-24 09:59:01,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-24 09:59:01,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 114. [2021-10-24 09:59:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 96 states have (on average 1.3333333333333333) internal successors, (128), 113 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:59:01,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2021-10-24 09:59:01,366 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 33 [2021-10-24 09:59:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:59:01,367 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2021-10-24 09:59:01,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.875) internal successors, (62), 17 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:59:01,367 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2021-10-24 09:59:01,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-24 09:59:01,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:59:01,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:59:01,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-24 09:59:01,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:59:01,580 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:59:01,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:59:01,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1034347814, now seen corresponding path program 1 times [2021-10-24 09:59:01,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:59:01,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201138286] [2021-10-24 09:59:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:59:01,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:59:01,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:59:01,583 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:59:01,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-24 09:59:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:59:02,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-24 09:59:02,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:59:02,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 09:59:03,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-24 09:59:03,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:59:03,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-24 09:59:03,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:59:03,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-24 09:59:03,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-10-24 09:59:03,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-10-24 09:59:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:59:03,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:59:06,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-24 09:59:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:59:06,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:59:06,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201138286] [2021-10-24 09:59:06,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201138286] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:59:06,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:59:06,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 21 [2021-10-24 09:59:06,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759741401] [2021-10-24 09:59:06,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-24 09:59:06,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:59:06,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-24 09:59:06,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2021-10-24 09:59:06,685 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:59:10,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:59:10,456 INFO L93 Difference]: Finished difference Result 224 states and 235 transitions. [2021-10-24 09:59:10,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-24 09:59:10,457 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 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 33 [2021-10-24 09:59:10,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:59:10,459 INFO L225 Difference]: With dead ends: 224 [2021-10-24 09:59:10,459 INFO L226 Difference]: Without dead ends: 224 [2021-10-24 09:59:10,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3996.5ms TimeCoverageRelationStatistics Valid=298, Invalid=824, Unknown=0, NotChecked=0, Total=1122 [2021-10-24 09:59:10,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-24 09:59:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 114. [2021-10-24 09:59:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 96 states have (on average 1.3229166666666667) internal successors, (127), 113 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:59:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 127 transitions. [2021-10-24 09:59:10,463 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 127 transitions. Word has length 33 [2021-10-24 09:59:10,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:59:10,463 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 127 transitions. [2021-10-24 09:59:10,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:59:10,464 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 127 transitions. [2021-10-24 09:59:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-24 09:59:10,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:59:10,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:59:10,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-24 09:59:10,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:59:10,680 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 09:59:10,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:59:10,681 INFO L82 PathProgramCache]: Analyzing trace with hash -2000011076, now seen corresponding path program 1 times [2021-10-24 09:59:10,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:59:10,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977954332] [2021-10-24 09:59:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:59:10,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:59:10,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:59:10,683 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:59:10,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-24 09:59:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:59:11,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-24 09:59:11,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:59:11,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 09:59:11,712 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-24 09:59:11,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-10-24 09:59:11,953 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-10-24 09:59:11,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 51 [2021-10-24 09:59:12,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-10-24 09:59:12,833 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-24 09:59:12,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 47 [2021-10-24 09:59:13,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 09:59:13,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:59:13,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 60 [2021-10-24 09:59:14,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:59:14,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-24 09:59:14,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 09:59:14,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 09:59:14,361 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-24 09:59:14,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 72 [2021-10-24 09:59:14,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2021-10-24 09:59:15,357 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:59:15,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 67 [2021-10-24 09:59:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:59:15,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:59:23,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 72 [2021-10-24 09:59:25,623 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:59:25,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-10-24 09:59:27,662 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)) v_DerPreprocessor_4))) (.cse2 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse1 (store (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse2 c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset) ULTIMATE.start_ldv_dev_set_drvdata_~data.base))) (select (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base .cse1) (select .cse1 .cse2)))) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))))))))))))))) (_ bv1 1)))) is different from false [2021-10-24 09:59:29,700 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse4 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) .cse4))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)) v_DerPreprocessor_4)))) (.cse2 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse1 (store (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse2 c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset) ULTIMATE.start_ldv_dev_set_drvdata_~data.base))) (select (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base .cse1) (select .cse1 .cse2)))) .cse4))))))))))))))))) (_ bv1 1)))) is different from false [2021-10-24 09:59:45,980 WARN L207 SmtUtils]: Spent 16.21 s on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2021-10-24 09:59:45,982 INFO L354 Elim1Store]: treesize reduction 80, result has 39.4 percent of original size [2021-10-24 09:59:45,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 9034 treesize of output 5117 [2021-10-24 09:59:46,251 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-10-24 09:59:46,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 5173 treesize of output 4927 [2021-10-24 09:59:57,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2234 treesize of output 2218 [2021-10-24 10:00:55,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-24 10:00:55,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 263 treesize of output 255 [2021-10-24 10:00:56,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 182 [2021-10-24 10:01:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:01:09,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:01:09,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977954332] [2021-10-24 10:01:09,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977954332] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:01:09,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:01:09,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 18] imperfect sequences [] total 34 [2021-10-24 10:01:09,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757548944] [2021-10-24 10:01:09,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-24 10:01:09,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:01:09,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-24 10:01:09,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=930, Unknown=6, NotChecked=126, Total=1190 [2021-10-24 10:01:09,507 INFO L87 Difference]: Start difference. First operand 114 states and 127 transitions. Second operand has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 35 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:01:27,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:01:27,845 INFO L93 Difference]: Finished difference Result 192 states and 203 transitions. [2021-10-24 10:01:27,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-24 10:01:27,847 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 35 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-24 10:01:27,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:01:27,849 INFO L225 Difference]: With dead ends: 192 [2021-10-24 10:01:27,849 INFO L226 Difference]: Without dead ends: 192 [2021-10-24 10:01:27,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 38081.3ms TimeCoverageRelationStatistics Valid=611, Invalid=2147, Unknown=6, NotChecked=206, Total=2970 [2021-10-24 10:01:27,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-24 10:01:27,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 115. [2021-10-24 10:01:27,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 97 states have (on average 1.3298969072164948) internal successors, (129), 114 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:01:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2021-10-24 10:01:27,856 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 34 [2021-10-24 10:01:27,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:01:27,856 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2021-10-24 10:01:27,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 35 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:01:27,857 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2021-10-24 10:01:27,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-24 10:01:27,857 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:01:27,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:01:27,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-24 10:01:28,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:01:28,069 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-10-24 10:01:28,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:01:28,070 INFO L82 PathProgramCache]: Analyzing trace with hash -2000011075, now seen corresponding path program 1 times [2021-10-24 10:01:28,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:01:28,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383513662] [2021-10-24 10:01:28,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:01:28,071 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:01:28,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:01:28,073 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:01:28,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-24 10:01:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:01:29,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-24 10:01:29,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:01:29,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 10:01:29,623 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-24 10:01:29,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-10-24 10:01:29,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 10:01:29,977 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-24 10:01:29,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 29 [2021-10-24 10:01:30,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 10:01:30,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-24 10:01:30,967 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-24 10:01:30,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-10-24 10:01:31,031 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-10-24 10:01:31,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-10-24 10:01:31,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:01:31,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-10-24 10:01:31,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:01:31,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-10-24 10:01:33,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 10:01:33,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:01:33,076 INFO L354 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2021-10-24 10:01:33,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 110 [2021-10-24 10:01:33,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 10:01:33,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:01:33,118 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-24 10:01:33,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 62 [2021-10-24 10:01:34,316 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-10-24 10:01:34,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-10-24 10:01:34,347 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-10-24 10:01:34,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-10-24 10:01:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:01:34,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:01:48,628 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:01:48,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-10-24 10:01:48,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:01:48,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 401 [2021-10-24 10:01:50,809 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_prenex_8 (_ BitVec 32)) (v_prenex_9 (_ BitVec 32))) (let ((.cse8 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse8 v_DerPreprocessor_5))) (.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse8 v_DerPreprocessor_6))) (.cse6 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse1 (store (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse7 v_prenex_9)) (.cse5 (store (store (select .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 c_ULTIMATE.start_entry_point_~intf~2.base) .cse7 v_prenex_8))) (let ((.cse2 (select .cse5 .cse6)) (.cse3 (bvadd (_ bv4294967292 32) (select .cse1 .cse6)))) (bvule (bvadd (select (select (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base .cse1) .cse2) .cse3) (_ bv8 32)) (select |c_#length| (select (select (store .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base .cse5) .cse2) .cse3)))))))) (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.offset (_ BitVec 32))) (let ((.cse9 (let ((.cse12 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse12 v_DerPreprocessor_6))) (.cse13 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse14 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse11 (store (store (select .cse10 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse14 ULTIMATE.start_ldv_dev_set_drvdata_~data.offset))) (select (select (store .cse10 c_ULTIMATE.start_entry_point_~hdev~0.base .cse11) (select (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse12 v_DerPreprocessor_5)) c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 c_ULTIMATE.start_entry_point_~intf~2.base) .cse14 ULTIMATE.start_ldv_dev_set_drvdata_~data.base) .cse13)) (bvadd (_ bv4294967292 32) (select .cse11 .cse13)))))))) (bvule (bvadd .cse9 (_ bv7 32)) (bvadd .cse9 (_ bv8 32)))))) is different from false [2021-10-24 10:01:53,092 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.offset (_ BitVec 32))) (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (.cse4 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) .cse4 v_DerPreprocessor_6))) (.cse5 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse6 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse2 (store (store (select .cse1 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse5 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse6 ULTIMATE.start_ldv_dev_set_drvdata_~data.offset))) (select (select (store .cse1 c_ULTIMATE.start_entry_point_~hdev~0.base .cse2) (select (store (store (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) .cse4 v_DerPreprocessor_5)) c_ULTIMATE.start_entry_point_~hdev~0.base) .cse5 c_ULTIMATE.start_entry_point_~intf~2.base) .cse6 ULTIMATE.start_ldv_dev_set_drvdata_~data.base) .cse5)) (bvadd (select .cse2 .cse5) (_ bv4294967292 32)))))))) (bvule (bvadd .cse0 (_ bv7 32)) (bvadd (_ bv8 32) .cse0)))) (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_prenex_8 (_ BitVec 32)) (v_prenex_9 (_ BitVec 32))) (let ((.cse15 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (.cse16 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse11 (store |c_#memory_$Pointer$.base| .cse15 (store (select |c_#memory_$Pointer$.base| .cse15) .cse16 v_DerPreprocessor_5))) (.cse7 (store |c_#memory_$Pointer$.offset| .cse15 (store (select |c_#memory_$Pointer$.offset| .cse15) .cse16 v_DerPreprocessor_6))) (.cse13 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse14 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse8 (store (store (select .cse7 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse14 v_prenex_9)) (.cse12 (store (store (select .cse11 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 c_ULTIMATE.start_entry_point_~intf~2.base) .cse14 v_prenex_8))) (let ((.cse9 (select .cse12 .cse13)) (.cse10 (bvadd (_ bv4294967292 32) (select .cse8 .cse13)))) (bvule (bvadd (_ bv8 32) (select (select (store .cse7 c_ULTIMATE.start_entry_point_~hdev~0.base .cse8) .cse9) .cse10)) (select |c_#length| (select (select (store .cse11 c_ULTIMATE.start_entry_point_~hdev~0.base .cse12) .cse9) .cse10))))))))) is different from false [2021-10-24 10:02:10,766 WARN L207 SmtUtils]: Spent 17.19 s on a formula simplification. DAG size of input: 70 DAG size of output: 29 [2021-10-24 10:02:10,767 INFO L354 Elim1Store]: treesize reduction 448, result has 10.4 percent of original size [2021-10-24 10:02:10,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51274 treesize of output 39089 [2021-10-24 10:02:27,815 WARN L207 SmtUtils]: Spent 16.91 s on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2021-10-24 10:02:27,815 INFO L354 Elim1Store]: treesize reduction 168, result has 42.5 percent of original size [2021-10-24 10:02:27,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 340117 treesize of output 208480 [2021-10-24 10:02:28,471 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:02:28,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 210056 treesize of output 201366 [2021-10-24 10:02:28,855 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:02:28,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 201366 treesize of output 192666 [2021-10-24 10:02:29,510 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:02:29,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383513662] [2021-10-24 10:02:29,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 10:02:29,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1409558399] [2021-10-24 10:02:29,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:02:29,512 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:02:29,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:02:29,517 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:02:29,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2021-10-24 10:02:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:02:31,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-24 10:02:31,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:02:31,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 10:02:31,140 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-24 10:02:31,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-10-24 10:02:31,308 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-24 10:02:31,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 27 [2021-10-24 10:02:31,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 10:02:31,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-24 10:02:31,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 10:02:31,824 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-24 10:02:31,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-10-24 10:02:31,873 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-10-24 10:02:31,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-10-24 10:02:32,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:02:32,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-10-24 10:02:32,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:02:32,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-10-24 10:02:32,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:02:32,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 10:02:33,023 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-24 10:02:33,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 75 [2021-10-24 10:02:33,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 10:02:33,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:02:33,065 INFO L354 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2021-10-24 10:02:33,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 97 [2021-10-24 10:02:33,674 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-10-24 10:02:33,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-10-24 10:02:33,700 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-10-24 10:02:33,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-10-24 10:02:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:02:33,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:02:34,264 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:02:34,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-10-24 10:02:34,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:02:34,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 401 [2021-10-24 10:02:36,397 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.offset (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse8 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse8 v_DerPreprocessor_7))) (.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse8 v_DerPreprocessor_8))) (.cse6 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse1 (store (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse7 ULTIMATE.start_ldv_dev_set_drvdata_~data.offset)) (.cse5 (store (store (select .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 c_ULTIMATE.start_entry_point_~intf~2.base) .cse7 ULTIMATE.start_ldv_dev_set_drvdata_~data.base))) (let ((.cse2 (select .cse5 .cse6)) (.cse3 (bvadd (_ bv4294967292 32) (select .cse1 .cse6)))) (bvule (bvadd (_ bv8 32) (select (select (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base .cse1) .cse2) .cse3)) (select |c_#length| (select (select (store .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base .cse5) .cse2) .cse3)))))))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_prenex_10 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_prenex_11 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse9 (let ((.cse12 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse12 v_DerPreprocessor_8))) (.cse13 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse14 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse11 (store (store (select .cse10 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse14 v_prenex_11))) (select (select (store .cse10 c_ULTIMATE.start_entry_point_~hdev~0.base .cse11) (select (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse12 v_DerPreprocessor_7)) c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 c_ULTIMATE.start_entry_point_~intf~2.base) .cse14 v_prenex_10) .cse13)) (bvadd (_ bv4294967292 32) (select .cse11 .cse13)))))))) (bvule (bvadd .cse9 (_ bv7 32)) (bvadd (_ bv8 32) .cse9))))) is different from false [2021-10-24 10:02:38,684 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_prenex_10 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_prenex_11 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (.cse4 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) .cse4 v_DerPreprocessor_8))) (.cse5 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse6 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse2 (store (store (select .cse1 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse5 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse6 v_prenex_11))) (select (select (store .cse1 c_ULTIMATE.start_entry_point_~hdev~0.base .cse2) (select (store (store (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) .cse4 v_DerPreprocessor_7)) c_ULTIMATE.start_entry_point_~hdev~0.base) .cse5 c_ULTIMATE.start_entry_point_~intf~2.base) .cse6 v_prenex_10) .cse5)) (bvadd (_ bv4294967292 32) (select .cse2 .cse5)))))))) (bvule (bvadd .cse0 (_ bv7 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.offset (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse15 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (.cse16 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse11 (store |c_#memory_$Pointer$.base| .cse15 (store (select |c_#memory_$Pointer$.base| .cse15) .cse16 v_DerPreprocessor_7))) (.cse7 (store |c_#memory_$Pointer$.offset| .cse15 (store (select |c_#memory_$Pointer$.offset| .cse15) .cse16 v_DerPreprocessor_8))) (.cse13 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse14 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse8 (store (store (select .cse7 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse14 ULTIMATE.start_ldv_dev_set_drvdata_~data.offset)) (.cse12 (store (store (select .cse11 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse13 c_ULTIMATE.start_entry_point_~intf~2.base) .cse14 ULTIMATE.start_ldv_dev_set_drvdata_~data.base))) (let ((.cse9 (select .cse12 .cse13)) (.cse10 (bvadd (_ bv4294967292 32) (select .cse8 .cse13)))) (bvule (bvadd (select (select (store .cse7 c_ULTIMATE.start_entry_point_~hdev~0.base .cse8) .cse9) .cse10) (_ bv8 32)) (select |c_#length| (select (select (store .cse11 c_ULTIMATE.start_entry_point_~hdev~0.base .cse12) .cse9) .cse10))))))))) is different from false [2021-10-24 10:02:39,983 INFO L354 Elim1Store]: treesize reduction 467, result has 6.6 percent of original size [2021-10-24 10:02:39,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 411690 treesize of output 313246 [2021-10-24 10:02:57,034 WARN L207 SmtUtils]: Spent 16.45 s on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2021-10-24 10:02:57,035 INFO L354 Elim1Store]: treesize reduction 204, result has 30.1 percent of original size [2021-10-24 10:02:57,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21774204 treesize of output 13336611 [2021-10-24 10:03:29,530 WARN L207 SmtUtils]: Spent 32.49 s on a formula simplification that was a NOOP. DAG size: 993 [2021-10-24 10:04:02,432 WARN L207 SmtUtils]: Spent 32.90 s on a formula simplification that was a NOOP. DAG size: 986 [2021-10-24 10:04:03,129 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-10-24 10:04:03,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 13434923 treesize of output 12877893 [2021-10-24 10:04:25,376 WARN L207 SmtUtils]: Spent 22.24 s on a formula simplification that was a NOOP. DAG size: 1002 [2021-10-24 10:04:44,504 WARN L207 SmtUtils]: Spent 19.12 s on a formula simplification that was a NOOP. DAG size: 995 [2021-10-24 10:04:44,703 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:04:44,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 12877885 treesize of output 12320851 [2021-10-24 10:05:03,164 WARN L207 SmtUtils]: Spent 18.46 s on a formula simplification that was a NOOP. DAG size: 1003 [2021-10-24 10:05:04,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 10:05:04,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948809973] [2021-10-24 10:05:04,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:05:04,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:05:04,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:05:04,165 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:05:04,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-24 10:05:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:05:05,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-24 10:05:05,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:05:05,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 10:05:05,805 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-24 10:05:05,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-10-24 10:05:05,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 10:05:05,978 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-24 10:05:05,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 29 [2021-10-24 10:05:06,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-24 10:05:06,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-24 10:05:06,367 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-10-24 10:05:06,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-10-24 10:05:06,401 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-10-24 10:05:06,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-10-24 10:05:06,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:05:06,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-10-24 10:05:06,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:05:06,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-10-24 10:05:07,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:05:07,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 10:05:07,449 INFO L354 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2021-10-24 10:05:07,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 110 [2021-10-24 10:05:07,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:05:07,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-24 10:05:07,478 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-24 10:05:07,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 62 [2021-10-24 10:05:07,986 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-10-24 10:05:07,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-10-24 10:05:08,025 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-10-24 10:05:08,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-10-24 10:05:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:05:08,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:05:08,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:05:08,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-10-24 10:05:08,798 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:05:08,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 401 [2021-10-24 10:05:10,889 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.offset (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse0 (let ((.cse3 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse3 v_DerPreprocessor_10))) (.cse4 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse5 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse2 (store (store (select .cse1 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse4 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse5 ULTIMATE.start_ldv_dev_set_drvdata_~data.offset))) (select (select (store .cse1 c_ULTIMATE.start_entry_point_~hdev~0.base .cse2) (select (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse3 v_DerPreprocessor_9)) c_ULTIMATE.start_entry_point_~hdev~0.base) .cse4 c_ULTIMATE.start_entry_point_~intf~2.base) .cse5 ULTIMATE.start_ldv_dev_set_drvdata_~data.base) .cse4)) (bvadd (_ bv4294967292 32) (select .cse2 .cse4)))))))) (bvule (bvadd .cse0 (_ bv7 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_prenex_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_prenex_13 (_ BitVec 32))) (let ((.cse14 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse10 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse14 v_DerPreprocessor_9))) (.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57.base|) .cse14 v_DerPreprocessor_10))) (.cse12 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse13 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse7 (store (store (select .cse6 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse12 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse13 v_prenex_13)) (.cse11 (store (store (select .cse10 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse12 c_ULTIMATE.start_entry_point_~intf~2.base) .cse13 v_prenex_12))) (let ((.cse8 (select .cse11 .cse12)) (.cse9 (bvadd (_ bv4294967292 32) (select .cse7 .cse12)))) (bvule (bvadd (_ bv8 32) (select (select (store .cse6 c_ULTIMATE.start_entry_point_~hdev~0.base .cse7) .cse8) .cse9)) (select |c_#length| (select (select (store .cse10 c_ULTIMATE.start_entry_point_~hdev~0.base .cse11) .cse8) .cse9))))))))) is different from false [2021-10-24 10:05:12,989 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (v_prenex_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_prenex_13 (_ BitVec 32))) (let ((.cse8 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (.cse9 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse8 (store (select |c_#memory_$Pointer$.base| .cse8) .cse9 v_DerPreprocessor_9))) (.cse0 (store |c_#memory_$Pointer$.offset| .cse8 (store (select |c_#memory_$Pointer$.offset| .cse8) .cse9 v_DerPreprocessor_10))) (.cse6 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse7 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse1 (store (store (select .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse7 v_prenex_13)) (.cse5 (store (store (select .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse6 c_ULTIMATE.start_entry_point_~intf~2.base) .cse7 v_prenex_12))) (let ((.cse2 (select .cse5 .cse6)) (.cse3 (bvadd (_ bv4294967292 32) (select .cse1 .cse6)))) (bvule (bvadd (select (select (store .cse0 c_ULTIMATE.start_entry_point_~hdev~0.base .cse1) .cse2) .cse3) (_ bv8 32)) (select |c_#length| (select (select (store .cse4 c_ULTIMATE.start_entry_point_~hdev~0.base .cse5) .cse2) .cse3)))))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.base (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57.offset| (_ BitVec 32)) (ULTIMATE.start_ldv_dev_set_drvdata_~data.offset (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse10 (let ((.cse13 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_entry_point_~intf~2.base) (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv4 32)))) (.cse14 (bvadd |ULTIMATE.start_entry_point_#t~mem57.offset| (_ bv7 32)))) (let ((.cse11 (store |c_#memory_$Pointer$.offset| .cse13 (store (select |c_#memory_$Pointer$.offset| .cse13) .cse14 v_DerPreprocessor_10))) (.cse15 (bvadd (_ bv8 32) c_ULTIMATE.start_entry_point_~hdev~0.offset)) (.cse16 (bvadd (_ bv4 32) c_ULTIMATE.start_entry_point_~hdev~0.offset))) (let ((.cse12 (store (store (select .cse11 c_ULTIMATE.start_entry_point_~hdev~0.base) .cse15 (bvadd c_ULTIMATE.start_entry_point_~intf~2.offset (_ bv8 32))) .cse16 ULTIMATE.start_ldv_dev_set_drvdata_~data.offset))) (select (select (store .cse11 c_ULTIMATE.start_entry_point_~hdev~0.base .cse12) (select (store (store (select (store |c_#memory_$Pointer$.base| .cse13 (store (select |c_#memory_$Pointer$.base| .cse13) .cse14 v_DerPreprocessor_9)) c_ULTIMATE.start_entry_point_~hdev~0.base) .cse15 c_ULTIMATE.start_entry_point_~intf~2.base) .cse16 ULTIMATE.start_ldv_dev_set_drvdata_~data.base) .cse15)) (bvadd (_ bv4294967292 32) (select .cse12 .cse15)))))))) (bvule (bvadd .cse10 (_ bv7 32)) (bvadd (_ bv8 32) .cse10))))) is different from false [2021-10-24 10:05:30,294 WARN L207 SmtUtils]: Spent 16.98 s on a formula simplification. DAG size of input: 70 DAG size of output: 29 [2021-10-24 10:05:30,295 INFO L354 Elim1Store]: treesize reduction 448, result has 10.4 percent of original size [2021-10-24 10:05:30,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 102762 treesize of output 78257 [2021-10-24 10:05:47,133 WARN L207 SmtUtils]: Spent 16.54 s on a formula simplification. DAG size of input: 65 DAG size of output: 28 [2021-10-24 10:05:47,134 INFO L354 Elim1Store]: treesize reduction 240, result has 17.8 percent of original size [2021-10-24 10:05:47,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2721685 treesize of output 1667096 [2021-10-24 10:05:51,949 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:05:51,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1679360 treesize of output 1609750 [2021-10-24 10:05:54,550 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:05:54,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1609750 treesize of output 1540140 [2021-10-24 10:05:57,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-24 10:05:57,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:05:57,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-24 10:05:57,285 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-24 10:05:57,286 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-24 10:05:57,294 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION [2021-10-24 10:05:57,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-24 10:05:57,296 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-24 10:05:57,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-24 10:05:57,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-24 10:05:57,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-24 10:05:57,297 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-24 10:05:57,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-24 10:05:57,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-24 10:05:57,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-24 10:05:57,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-24 10:05:57,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-24 10:05:57,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-24 10:05:57,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-24 10:05:57,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-24 10:05:57,299 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-24 10:05:57,300 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-24 10:05:57,300 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-24 10:05:57,300 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-24 10:05:57,300 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-24 10:05:57,300 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-24 10:05:57,301 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-24 10:05:57,301 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-24 10:05:57,301 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-24 10:05:57,301 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-24 10:05:57,302 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-24 10:05:57,302 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-24 10:05:57,302 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,302 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-24 10:05:57,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-24 10:05:57,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-24 10:05:57,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-24 10:05:57,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-24 10:05:57,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-24 10:05:57,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-24 10:05:57,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION [2021-10-24 10:05:57,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION [2021-10-24 10:05:57,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:05:57,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:05:57,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-24 10:05:57,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-24 10:05:57,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2021-10-24 10:05:57,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 10:05:57,946 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:05:58,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:05:58 BoogieIcfgContainer [2021-10-24 10:05:58,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:05:58,005 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:05:58,005 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:05:58,006 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:05:58,006 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:54:03" (3/4) ... [2021-10-24 10:05:58,010 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:05:58,011 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:05:58,012 INFO L168 Benchmark]: Toolchain (without parser) took 716459.54 ms. Allocated memory was 52.4 MB in the beginning and 650.1 MB in the end (delta: 597.7 MB). Free memory was 27.5 MB in the beginning and 537.4 MB in the end (delta: -510.0 MB). Peak memory consumption was 87.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:05:58,017 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 52.4 MB. Free memory was 32.9 MB in the beginning and 32.8 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:05:58,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 903.98 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 27.2 MB in the beginning and 37.4 MB in the end (delta: -10.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:05:58,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.99 ms. Allocated memory is still 62.9 MB. Free memory was 37.2 MB in the beginning and 34.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:05:58,019 INFO L168 Benchmark]: Boogie Preprocessor took 62.76 ms. Allocated memory is still 62.9 MB. Free memory was 34.3 MB in the beginning and 31.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:05:58,020 INFO L168 Benchmark]: RCFGBuilder took 941.76 ms. Allocated memory is still 62.9 MB. Free memory was 31.9 MB in the beginning and 32.4 MB in the end (delta: -533.4 kB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:05:58,021 INFO L168 Benchmark]: TraceAbstraction took 714462.11 ms. Allocated memory was 62.9 MB in the beginning and 650.1 MB in the end (delta: 587.2 MB). Free memory was 31.8 MB in the beginning and 538.5 MB in the end (delta: -506.6 MB). Peak memory consumption was 412.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:05:58,021 INFO L168 Benchmark]: Witness Printer took 5.40 ms. Allocated memory is still 650.1 MB. Free memory was 538.5 MB in the beginning and 537.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:05:58,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 52.4 MB. Free memory was 32.9 MB in the beginning and 32.8 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 903.98 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 27.2 MB in the beginning and 37.4 MB in the end (delta: -10.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.99 ms. Allocated memory is still 62.9 MB. Free memory was 37.2 MB in the beginning and 34.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.76 ms. Allocated memory is still 62.9 MB. Free memory was 34.3 MB in the beginning and 31.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 941.76 ms. Allocated memory is still 62.9 MB. Free memory was 31.9 MB in the beginning and 32.4 MB in the end (delta: -533.4 kB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 714462.11 ms. Allocated memory was 62.9 MB in the beginning and 650.1 MB in the end (delta: 587.2 MB). Free memory was 31.8 MB in the beginning and 538.5 MB in the end (delta: -506.6 MB). Peak memory consumption was 412.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.40 ms. Allocated memory is still 650.1 MB. Free memory was 538.5 MB in the beginning and 537.4 MB in the end (delta: 1.0 MB). There was no memory consumed. 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 - UnprovableResult [Line: 802]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L822] struct ldv_hid_device *hdev = (struct ldv_hid_device *)ldv_malloc(sizeof(struct ldv_hid_device)); [L823] COND FALSE !(!hdev) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L824] struct ldv_usb_interface *intf = (struct ldv_usb_interface*)ldv_malloc(sizeof(struct ldv_usb_interface)); [L825] COND FALSE !(!intf) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L826] intf->cur_altsetting = (struct ldv_usb_host_interface *)ldv_malloc(sizeof(struct ldv_usb_host_interface)) [L827] EXPR intf->cur_altsetting [L827] COND FALSE !(!intf->cur_altsetting) [L828] EXPR intf->cur_altsetting [L828] intf->cur_altsetting->desc.bInterfaceProtocol = (char)__VERIFIER_nondet_int() [L829] hdev->dev.parent = &intf->dev [L809] int retval; [L778] struct ldv_arvo_device *arvo; [L779] int retval; [L780] EXPR hdev->dev.parent [L780] const typeof( ((struct ldv_usb_interface *)0)->dev ) *__mptr = (hdev->dev.parent); [L780] struct ldv_usb_interface *intf = ({ const typeof( ((struct ldv_usb_interface *)0)->dev ) *__mptr = (hdev->dev.parent); (struct ldv_usb_interface *)( (char *)__mptr - ((size_t) &((struct ldv_usb_interface *)0)->dev) );}); [L781] EXPR intf->cur_altsetting [L781] EXPR intf->cur_altsetting->desc.bInterfaceProtocol [L781] COND TRUE intf->cur_altsetting->desc.bInterfaceProtocol == 7 [L623] dev->driver_data = data [L783] return 0; [L810] retval = ldv_arvo_init_specials(hdev) [L811] COND FALSE !(\read(retval)) [L814] return 0; [L830] COND TRUE ldv_arvo_probe(hdev)==0 [L800] EXPR hdev->dev.parent [L800] const typeof( ((struct ldv_usb_interface *)0)->dev ) *__mptr = (hdev->dev.parent); [L800] struct ldv_usb_interface *intf = ({ const typeof( ((struct ldv_usb_interface *)0)->dev ) *__mptr = (hdev->dev.parent); (struct ldv_usb_interface *)( (char *)__mptr - ((size_t) &((struct ldv_usb_interface *)0)->dev) );}); [L801] struct ldv_arvo_device *arvo; [L802] EXPR intf->cur_altsetting [L802] intf->cur_altsetting->desc.bInterfaceProtocol - UnprovableResult [Line: 826]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 827]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 827]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 828]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 828]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 828]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 828]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 829]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 829]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 780]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 780]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 796]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 796]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 796]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 800]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 800]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 802]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 802]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 802]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 836]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 836]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 836]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 838]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 838]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 838]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 842]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 126 locations, 52 error locations. Started 1 CEGAR loops. OverallTime: 714340.6ms, OverallIterations: 37, TraceHistogramMax: 1, EmptinessCheckTime: 57.9ms, AutomataDifference: 197091.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3718 SDtfs, 15971 SDslu, 10476 SDs, 0 SdLazy, 9014 SolverSat, 732 SolverUnsat, 37 SolverUnknown, 0 SolverNotchecked, 145788.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1518 GetRequests, 1034 SyntacticMatches, 23 SemanticMatches, 461 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1626 ImplicationChecksByTransitivity, 157046.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=233occurred in iteration=8, InterpolantAutomatonStates: 329, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 357.5ms AutomataMinimizationTime, 36 MinimizatonAttempts, 3572 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 502.1ms SsaConstructionTime, 2793.2ms SatisfiabilityAnalysisTime, 223804.8ms InterpolantComputationTime, 709 NumberOfCodeBlocks, 709 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 1346 ConstructedInterpolants, 139 QuantifiedInterpolants, 19245 SizeOfPredicates, 379 NumberOfNonLiveVariables, 3351 ConjunctsInSsa, 457 ConjunctsInUnsatCore, 72 InterpolantComputations, 72 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2021-10-24 10:05:58,316 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-24 10:05:58,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d276e17-7089-4ef0-b9ef-baf9e557a88c/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...