./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43c551c05c986c34609f999e25a13e0dbb4f692e7b1d3b7f2939ec615c71d0d0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:01:44,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:01:44,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:01:45,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:01:45,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:01:45,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:01:45,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:01:45,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:01:45,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:01:45,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:01:45,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:01:45,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:01:45,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:01:45,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:01:45,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:01:45,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:01:45,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:01:45,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:01:45,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:01:45,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:01:45,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:01:45,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:01:45,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:01:45,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:01:45,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:01:45,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:01:45,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:01:45,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:01:45,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:01:45,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:01:45,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:01:45,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:01:45,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:01:45,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:01:45,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:01:45,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:01:45,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:01:45,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:01:45,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:01:45,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:01:45,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:01:45,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-02 21:01:45,117 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:01:45,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:01:45,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:01:45,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:01:45,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:01:45,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:01:45,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:01:45,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:01:45,122 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:01:45,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:01:45,123 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:01:45,123 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:01:45,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:01:45,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:01:45,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:01:45,124 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 21:01:45,125 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 21:01:45,125 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 21:01:45,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:01:45,125 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:01:45,126 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:01:45,126 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:01:45,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:01:45,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:01:45,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:01:45,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:45,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:01:45,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:01:45,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:01:45,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:01:45,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c551c05c986c34609f999e25a13e0dbb4f692e7b1d3b7f2939ec615c71d0d0 [2022-11-02 21:01:45,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:01:45,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:01:45,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:01:45,556 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:01:45,558 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:01:45,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i [2022-11-02 21:01:45,677 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/data/108c65ac6/39aa427cb24741bb9c158418d51686ca/FLAGc170bc42a [2022-11-02 21:01:46,489 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:01:46,493 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i [2022-11-02 21:01:46,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/data/108c65ac6/39aa427cb24741bb9c158418d51686ca/FLAGc170bc42a [2022-11-02 21:01:46,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/data/108c65ac6/39aa427cb24741bb9c158418d51686ca [2022-11-02 21:01:46,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:01:46,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:01:46,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:46,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:01:46,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:01:46,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:46" (1/1) ... [2022-11-02 21:01:46,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae21b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:46, skipping insertion in model container [2022-11-02 21:01:46,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:46" (1/1) ... [2022-11-02 21:01:46,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:01:46,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:01:47,503 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i[33022,33035] [2022-11-02 21:01:47,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:47,782 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-02 21:01:47,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@717c61ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:47, skipping insertion in model container [2022-11-02 21:01:47,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:47,784 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-02 21:01:47,786 INFO L158 Benchmark]: Toolchain (without parser) took 1187.64ms. Allocated memory is still 132.1MB. Free memory was 94.4MB in the beginning and 87.9MB in the end (delta: 6.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:01:47,787 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory was 69.7MB in the beginning and 69.7MB in the end (delta: 31.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:01:47,788 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1181.15ms. Allocated memory is still 132.1MB. Free memory was 94.1MB in the beginning and 87.9MB in the end (delta: 6.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:01:47,790 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory was 69.7MB in the beginning and 69.7MB in the end (delta: 31.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1181.15ms. Allocated memory is still 132.1MB. Free memory was 94.1MB in the beginning and 87.9MB in the end (delta: 6.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43c551c05c986c34609f999e25a13e0dbb4f692e7b1d3b7f2939ec615c71d0d0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:01:50,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:01:50,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:01:50,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:01:50,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:01:50,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:01:50,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:01:50,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:01:50,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:01:50,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:01:50,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:01:50,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:01:50,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:01:50,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:01:50,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:01:50,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:01:50,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:01:50,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:01:50,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:01:50,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:01:50,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:01:50,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:01:50,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:01:50,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:01:50,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:01:50,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:01:50,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:01:50,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:01:50,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:01:50,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:01:50,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:01:50,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:01:50,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:01:50,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:01:50,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:01:50,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:01:50,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:01:50,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:01:50,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:01:50,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:01:50,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:01:50,550 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-02 21:01:50,605 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:01:50,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:01:50,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:01:50,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:01:50,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:01:50,609 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:01:50,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:01:50,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:01:50,612 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:01:50,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:01:50,614 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:01:50,614 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:01:50,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:01:50,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:01:50,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:01:50,615 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 21:01:50,616 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 21:01:50,616 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 21:01:50,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:01:50,616 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:01:50,617 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:01:50,617 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:01:50,617 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:01:50,617 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:01:50,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:01:50,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:01:50,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:01:50,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:50,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:01:50,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:01:50,619 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:01:50,620 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:01:50,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:01:50,621 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_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c551c05c986c34609f999e25a13e0dbb4f692e7b1d3b7f2939ec615c71d0d0 [2022-11-02 21:01:51,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:01:51,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:01:51,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:01:51,222 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:01:51,223 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:01:51,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i [2022-11-02 21:01:51,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/data/79114d1dd/229353d4bab24032be8843f865ad7027/FLAG4925da609 [2022-11-02 21:01:52,258 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:01:52,259 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i [2022-11-02 21:01:52,278 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/data/79114d1dd/229353d4bab24032be8843f865ad7027/FLAG4925da609 [2022-11-02 21:01:52,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/data/79114d1dd/229353d4bab24032be8843f865ad7027 [2022-11-02 21:01:52,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:01:52,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:01:52,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:52,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:01:52,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:01:52,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:52" (1/1) ... [2022-11-02 21:01:52,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35bb9994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:52, skipping insertion in model container [2022-11-02 21:01:52,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:52" (1/1) ... [2022-11-02 21:01:52,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:01:52,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:01:53,204 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i[33022,33035] [2022-11-02 21:01:53,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:53,552 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 21:01:53,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:01:53,629 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i[33022,33035] [2022-11-02 21:01:53,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:53,854 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:01:53,902 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i[33022,33035] [2022-11-02 21:01:53,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:54,059 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:01:54,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:54 WrapperNode [2022-11-02 21:01:54,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:54,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:54,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:01:54,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:01:54,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:54" (1/1) ... [2022-11-02 21:01:54,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:54" (1/1) ... [2022-11-02 21:01:54,213 INFO L138 Inliner]: procedures = 180, calls = 524, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2184 [2022-11-02 21:01:54,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:54,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:01:54,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:01:54,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:01:54,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:54" (1/1) ... [2022-11-02 21:01:54,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:54" (1/1) ... [2022-11-02 21:01:54,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:54" (1/1) ... [2022-11-02 21:01:54,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:54" (1/1) ... [2022-11-02 21:01:54,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:54" (1/1) ... [2022-11-02 21:01:54,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:54" (1/1) ... [2022-11-02 21:01:54,477 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:54" (1/1) ... [2022-11-02 21:01:54,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:54" (1/1) ... [2022-11-02 21:01:54,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:01:54,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:01:54,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:01:54,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:01:54,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:54" (1/1) ... [2022-11-02 21:01:54,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:54,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:54,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:01:54,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:01:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-02 21:01:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2022-11-02 21:01:54,646 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2022-11-02 21:01:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 21:01:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 21:01:54,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 21:01:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 21:01:54,650 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 21:01:54,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:01:54,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:01:54,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 21:01:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:01:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-02 21:01:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 21:01:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:01:54,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 21:01:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 21:01:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:01:54,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:01:55,120 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:01:55,123 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:01:55,128 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-02 21:02:07,872 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:02:07,894 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:02:07,896 INFO L300 CfgBuilder]: Removed 151 assume(true) statements. [2022-11-02 21:02:07,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:02:07 BoogieIcfgContainer [2022-11-02 21:02:07,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:02:07,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:02:07,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:02:07,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:02:07,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:01:52" (1/3) ... [2022-11-02 21:02:07,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62fe734c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:02:07, skipping insertion in model container [2022-11-02 21:02:07,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:54" (2/3) ... [2022-11-02 21:02:07,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62fe734c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:02:07, skipping insertion in model container [2022-11-02 21:02:07,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:02:07" (3/3) ... [2022-11-02 21:02:07,914 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-1.i [2022-11-02 21:02:07,935 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:02:07,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 990 error locations. [2022-11-02 21:02:08,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:02:08,102 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ab60afe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:02:08,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 990 error locations. [2022-11-02 21:02:08,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 2060 states, 1058 states have (on average 2.2041587901701325) internal successors, (2332), 2046 states have internal predecessors, (2332), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 21:02:08,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 21:02:08,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:08,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 21:02:08,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:02:08,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:08,133 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2022-11-02 21:02:08,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:08,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920251204] [2022-11-02 21:02:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:08,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:08,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:08,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:08,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:02:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:08,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:02:08,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:08,567 INFO L390 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 7 [2022-11-02 21:02:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:08,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:08,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:08,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920251204] [2022-11-02 21:02:08,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920251204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:08,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:08,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:02:08,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903003198] [2022-11-02 21:02:08,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:08,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:02:08,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:08,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:02:08,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:08,697 INFO L87 Difference]: Start difference. First operand has 2060 states, 1058 states have (on average 2.2041587901701325) internal successors, (2332), 2046 states have internal predecessors, (2332), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:14,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:14,519 INFO L93 Difference]: Finished difference Result 2558 states and 2724 transitions. [2022-11-02 21:02:14,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:02:14,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 21:02:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:14,556 INFO L225 Difference]: With dead ends: 2558 [2022-11-02 21:02:14,556 INFO L226 Difference]: Without dead ends: 2556 [2022-11-02 21:02:14,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:14,564 INFO L413 NwaCegarLoop]: 1273 mSDtfsCounter, 1951 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:14,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1961 Valid, 1646 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-02 21:02:14,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2022-11-02 21:02:14,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2202. [2022-11-02 21:02:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 1224 states have (on average 2.037581699346405) internal successors, (2494), 2186 states have internal predecessors, (2494), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 21:02:14,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 2526 transitions. [2022-11-02 21:02:14,725 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 2526 transitions. Word has length 3 [2022-11-02 21:02:14,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:14,725 INFO L495 AbstractCegarLoop]: Abstraction has 2202 states and 2526 transitions. [2022-11-02 21:02:14,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:14,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 2526 transitions. [2022-11-02 21:02:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 21:02:14,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:14,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 21:02:14,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:14,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:14,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:02:14,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:14,954 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2022-11-02 21:02:14,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:14,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614445145] [2022-11-02 21:02:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:14,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:14,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:14,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:15,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:02:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:15,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:02:15,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:15,233 INFO L390 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 [2022-11-02 21:02:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:15,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:15,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:15,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614445145] [2022-11-02 21:02:15,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614445145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:15,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:15,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:02:15,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714086806] [2022-11-02 21:02:15,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:15,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:02:15,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:15,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:02:15,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:15,278 INFO L87 Difference]: Start difference. First operand 2202 states and 2526 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:23,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:23,082 INFO L93 Difference]: Finished difference Result 2973 states and 3378 transitions. [2022-11-02 21:02:23,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:02:23,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 21:02:23,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:23,097 INFO L225 Difference]: With dead ends: 2973 [2022-11-02 21:02:23,098 INFO L226 Difference]: Without dead ends: 2973 [2022-11-02 21:02:23,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:23,100 INFO L413 NwaCegarLoop]: 1837 mSDtfsCounter, 844 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:23,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 3017 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-02 21:02:23,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2022-11-02 21:02:23,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 2651. [2022-11-02 21:02:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 1671 states have (on average 1.9970077797725914) internal successors, (3337), 2632 states have internal predecessors, (3337), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-02 21:02:23,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3375 transitions. [2022-11-02 21:02:23,172 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3375 transitions. Word has length 3 [2022-11-02 21:02:23,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:23,173 INFO L495 AbstractCegarLoop]: Abstraction has 2651 states and 3375 transitions. [2022-11-02 21:02:23,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:23,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3375 transitions. [2022-11-02 21:02:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 21:02:23,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:23,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:23,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:23,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:23,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:02:23,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1375609072, now seen corresponding path program 1 times [2022-11-02 21:02:23,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:23,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067119949] [2022-11-02 21:02:23,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:23,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:23,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:23,402 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:23,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:02:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:23,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:02:23,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:23,769 INFO L390 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 7 [2022-11-02 21:02:23,778 INFO L390 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 [2022-11-02 21:02:23,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:02:23,894 INFO L390 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 [2022-11-02 21:02:23,923 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:02:23,923 INFO L390 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 13 treesize of output 13 [2022-11-02 21:02:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:23,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:23,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:23,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067119949] [2022-11-02 21:02:23,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067119949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:23,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:23,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:02:23,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520384325] [2022-11-02 21:02:23,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:23,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:23,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:23,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:23,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:23,969 INFO L87 Difference]: Start difference. First operand 2651 states and 3375 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:37,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:37,348 INFO L93 Difference]: Finished difference Result 4906 states and 5782 transitions. [2022-11-02 21:02:37,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:37,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 21:02:37,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:37,369 INFO L225 Difference]: With dead ends: 4906 [2022-11-02 21:02:37,369 INFO L226 Difference]: Without dead ends: 4906 [2022-11-02 21:02:37,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:37,371 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 4307 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 2713 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4317 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 2758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:37,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4317 Valid, 2067 Invalid, 2758 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 2713 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2022-11-02 21:02:37,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4906 states. [2022-11-02 21:02:37,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4906 to 3370. [2022-11-02 21:02:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3370 states, 2390 states have (on average 2.0351464435146442) internal successors, (4864), 3345 states have internal predecessors, (4864), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:02:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 4914 transitions. [2022-11-02 21:02:37,480 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 4914 transitions. Word has length 7 [2022-11-02 21:02:37,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:37,481 INFO L495 AbstractCegarLoop]: Abstraction has 3370 states and 4914 transitions. [2022-11-02 21:02:37,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:37,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 4914 transitions. [2022-11-02 21:02:37,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:02:37,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:37,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:37,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:37,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:37,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:02:37,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:37,705 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2022-11-02 21:02:37,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:37,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893113941] [2022-11-02 21:02:37,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:37,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:37,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:37,711 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:37,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:02:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:37,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:02:37,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:37,976 INFO L390 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 7 [2022-11-02 21:02:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:37,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:37,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:37,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893113941] [2022-11-02 21:02:37,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893113941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:37,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:37,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:02:37,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753782727] [2022-11-02 21:02:37,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:37,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:02:37,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:37,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:02:37,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:37,999 INFO L87 Difference]: Start difference. First operand 3370 states and 4914 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:43,344 INFO L93 Difference]: Finished difference Result 4574 states and 6431 transitions. [2022-11-02 21:02:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:02:43,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 21:02:43,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:43,366 INFO L225 Difference]: With dead ends: 4574 [2022-11-02 21:02:43,367 INFO L226 Difference]: Without dead ends: 4574 [2022-11-02 21:02:43,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:43,368 INFO L413 NwaCegarLoop]: 1967 mSDtfsCounter, 1998 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:43,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2008 Valid, 2622 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-02 21:02:43,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4574 states. [2022-11-02 21:02:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4574 to 3279. [2022-11-02 21:02:43,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3279 states, 2390 states have (on average 1.9460251046025105) internal successors, (4651), 3254 states have internal predecessors, (4651), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:02:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3279 states to 3279 states and 4701 transitions. [2022-11-02 21:02:43,483 INFO L78 Accepts]: Start accepts. Automaton has 3279 states and 4701 transitions. Word has length 8 [2022-11-02 21:02:43,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:43,484 INFO L495 AbstractCegarLoop]: Abstraction has 3279 states and 4701 transitions. [2022-11-02 21:02:43,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:43,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3279 states and 4701 transitions. [2022-11-02 21:02:43,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:02:43,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:43,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:43,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:43,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:43,701 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:02:43,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:43,702 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2022-11-02 21:02:43,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:43,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271294383] [2022-11-02 21:02:43,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:43,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:43,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:43,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:43,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:02:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:43,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:02:43,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:43,983 INFO L390 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 [2022-11-02 21:02:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:44,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:44,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:44,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271294383] [2022-11-02 21:02:44,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271294383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:44,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:44,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:02:44,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412403417] [2022-11-02 21:02:44,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:44,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:02:44,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:44,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:02:44,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:44,021 INFO L87 Difference]: Start difference. First operand 3279 states and 4701 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:51,979 INFO L93 Difference]: Finished difference Result 4996 states and 7060 transitions. [2022-11-02 21:02:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:02:51,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 21:02:51,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:51,995 INFO L225 Difference]: With dead ends: 4996 [2022-11-02 21:02:51,995 INFO L226 Difference]: Without dead ends: 4996 [2022-11-02 21:02:51,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:51,999 INFO L413 NwaCegarLoop]: 2347 mSDtfsCounter, 1371 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:51,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 3335 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-02 21:02:52,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4996 states. [2022-11-02 21:02:52,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4996 to 3601. [2022-11-02 21:02:52,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2722 states have (on average 1.9335047759000734) internal successors, (5263), 3576 states have internal predecessors, (5263), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:02:52,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5313 transitions. [2022-11-02 21:02:52,106 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5313 transitions. Word has length 8 [2022-11-02 21:02:52,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:52,107 INFO L495 AbstractCegarLoop]: Abstraction has 3601 states and 5313 transitions. [2022-11-02 21:02:52,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:52,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5313 transitions. [2022-11-02 21:02:52,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:02:52,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:52,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:52,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:52,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:52,324 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:02:52,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:52,325 INFO L85 PathProgramCache]: Analyzing trace with hash -690352907, now seen corresponding path program 1 times [2022-11-02 21:02:52,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:52,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478235658] [2022-11-02 21:02:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:52,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:52,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:52,327 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:52,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:02:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:52,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:02:52,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:52,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:52,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:52,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478235658] [2022-11-02 21:02:52,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478235658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:52,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:52,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:02:52,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432810243] [2022-11-02 21:02:52,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:52,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:02:52,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:52,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:02:52,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:52,615 INFO L87 Difference]: Start difference. First operand 3601 states and 5313 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:52,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:52,675 INFO L93 Difference]: Finished difference Result 3541 states and 5227 transitions. [2022-11-02 21:02:52,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:02:52,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:02:52,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:52,692 INFO L225 Difference]: With dead ends: 3541 [2022-11-02 21:02:52,692 INFO L226 Difference]: Without dead ends: 3541 [2022-11-02 21:02:52,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:52,694 INFO L413 NwaCegarLoop]: 2011 mSDtfsCounter, 801 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 3227 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:52,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 3227 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:02:52,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2022-11-02 21:02:52,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3541. [2022-11-02 21:02:52,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3541 states, 2686 states have (on average 1.9274013402829486) internal successors, (5177), 3516 states have internal predecessors, (5177), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:02:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 5227 transitions. [2022-11-02 21:02:52,783 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 5227 transitions. Word has length 11 [2022-11-02 21:02:52,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:52,783 INFO L495 AbstractCegarLoop]: Abstraction has 3541 states and 5227 transitions. [2022-11-02 21:02:52,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 5227 transitions. [2022-11-02 21:02:52,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:02:52,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:52,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:52,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:53,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:53,009 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:02:53,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:53,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2004126129, now seen corresponding path program 1 times [2022-11-02 21:02:53,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:53,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166494213] [2022-11-02 21:02:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:53,011 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:53,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:53,013 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:53,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:02:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:53,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:02:53,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:53,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:53,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:53,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166494213] [2022-11-02 21:02:53,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166494213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:53,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:53,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:53,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744508107] [2022-11-02 21:02:53,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:53,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:53,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:53,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:53,315 INFO L87 Difference]: Start difference. First operand 3541 states and 5227 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:53,483 INFO L93 Difference]: Finished difference Result 3513 states and 5171 transitions. [2022-11-02 21:02:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:53,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:02:53,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:53,516 INFO L225 Difference]: With dead ends: 3513 [2022-11-02 21:02:53,526 INFO L226 Difference]: Without dead ends: 3513 [2022-11-02 21:02:53,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:02:53,527 INFO L413 NwaCegarLoop]: 1966 mSDtfsCounter, 772 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 5141 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:53,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 5141 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:02:53,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3513 states. [2022-11-02 21:02:53,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3513 to 3511. [2022-11-02 21:02:53,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3511 states, 2670 states have (on average 1.9172284644194757) internal successors, (5119), 3486 states have internal predecessors, (5119), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:02:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 5169 transitions. [2022-11-02 21:02:53,617 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 5169 transitions. Word has length 13 [2022-11-02 21:02:53,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:53,618 INFO L495 AbstractCegarLoop]: Abstraction has 3511 states and 5169 transitions. [2022-11-02 21:02:53,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 5169 transitions. [2022-11-02 21:02:53,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 21:02:53,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:53,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:53,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:53,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:53,836 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:02:53,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:53,837 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2022-11-02 21:02:53,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:53,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411676218] [2022-11-02 21:02:53,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:53,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:53,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:53,840 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:53,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:02:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:54,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:02:54,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:54,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:54,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:54,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411676218] [2022-11-02 21:02:54,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411676218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:54,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:54,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:02:54,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874886095] [2022-11-02 21:02:54,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:54,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:02:54,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:54,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:02:54,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:54,192 INFO L87 Difference]: Start difference. First operand 3511 states and 5169 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:54,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:54,262 INFO L93 Difference]: Finished difference Result 4760 states and 6526 transitions. [2022-11-02 21:02:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:02:54,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-02 21:02:54,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:54,278 INFO L225 Difference]: With dead ends: 4760 [2022-11-02 21:02:54,278 INFO L226 Difference]: Without dead ends: 4760 [2022-11-02 21:02:54,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:54,279 INFO L413 NwaCegarLoop]: 3299 mSDtfsCounter, 1892 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1902 SdHoareTripleChecker+Valid, 4705 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:54,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1902 Valid, 4705 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:02:54,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4760 states. [2022-11-02 21:02:54,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4760 to 3451. [2022-11-02 21:02:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3451 states, 2634 states have (on average 1.910782080485953) internal successors, (5033), 3426 states have internal predecessors, (5033), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:02:54,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 5083 transitions. [2022-11-02 21:02:54,371 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 5083 transitions. Word has length 20 [2022-11-02 21:02:54,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:54,371 INFO L495 AbstractCegarLoop]: Abstraction has 3451 states and 5083 transitions. [2022-11-02 21:02:54,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:54,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 5083 transitions. [2022-11-02 21:02:54,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 21:02:54,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:54,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:54,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-02 21:02:54,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:54,589 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:02:54,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:54,590 INFO L85 PathProgramCache]: Analyzing trace with hash 591123743, now seen corresponding path program 1 times [2022-11-02 21:02:54,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:54,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140554261] [2022-11-02 21:02:54,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:54,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:54,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:54,594 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:54,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:02:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:54,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:02:54,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:54,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:54,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:54,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140554261] [2022-11-02 21:02:54,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140554261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:54,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:54,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:02:54,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269427134] [2022-11-02 21:02:54,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:54,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:02:54,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:02:54,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:54,957 INFO L87 Difference]: Start difference. First operand 3451 states and 5083 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:55,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:55,061 INFO L93 Difference]: Finished difference Result 4593 states and 6235 transitions. [2022-11-02 21:02:55,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:02:55,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-02 21:02:55,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:55,075 INFO L225 Difference]: With dead ends: 4593 [2022-11-02 21:02:55,075 INFO L226 Difference]: Without dead ends: 4593 [2022-11-02 21:02:55,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:02:55,079 INFO L413 NwaCegarLoop]: 3208 mSDtfsCounter, 1849 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 4566 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:55,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 4566 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:02:55,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states. [2022-11-02 21:02:55,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 3319. [2022-11-02 21:02:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3319 states, 2526 states have (on average 1.8903404592240696) internal successors, (4775), 3294 states have internal predecessors, (4775), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:02:55,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 4825 transitions. [2022-11-02 21:02:55,164 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 4825 transitions. Word has length 20 [2022-11-02 21:02:55,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:55,164 INFO L495 AbstractCegarLoop]: Abstraction has 3319 states and 4825 transitions. [2022-11-02 21:02:55,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:55,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 4825 transitions. [2022-11-02 21:02:55,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:02:55,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:55,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:55,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:55,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:55,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:02:55,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:55,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2022-11-02 21:02:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:55,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432157375] [2022-11-02 21:02:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:55,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:55,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:55,394 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:55,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:02:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:55,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:02:55,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:55,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:55,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:55,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432157375] [2022-11-02 21:02:55,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432157375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:55,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:55,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:55,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79078499] [2022-11-02 21:02:55,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:55,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:55,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:55,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:55,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:55,705 INFO L87 Difference]: Start difference. First operand 3319 states and 4825 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:55,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:55,862 INFO L93 Difference]: Finished difference Result 4558 states and 6169 transitions. [2022-11-02 21:02:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:55,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-02 21:02:55,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:55,874 INFO L225 Difference]: With dead ends: 4558 [2022-11-02 21:02:55,874 INFO L226 Difference]: Without dead ends: 4558 [2022-11-02 21:02:55,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:02:55,875 INFO L413 NwaCegarLoop]: 3168 mSDtfsCounter, 1820 mSDsluCounter, 4524 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 7692 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:55,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1830 Valid, 7692 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:02:55,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4558 states. [2022-11-02 21:02:55,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4558 to 3289. [2022-11-02 21:02:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3289 states, 2510 states have (on average 1.8792828685258964) internal successors, (4717), 3264 states have internal predecessors, (4717), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:02:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3289 states to 3289 states and 4767 transitions. [2022-11-02 21:02:55,950 INFO L78 Accepts]: Start accepts. Automaton has 3289 states and 4767 transitions. Word has length 22 [2022-11-02 21:02:55,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:55,951 INFO L495 AbstractCegarLoop]: Abstraction has 3289 states and 4767 transitions. [2022-11-02 21:02:55,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:55,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3289 states and 4767 transitions. [2022-11-02 21:02:55,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:02:55,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:55,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:55,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:56,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:56,173 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:02:56,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:56,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1134259450, now seen corresponding path program 1 times [2022-11-02 21:02:56,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:56,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114470290] [2022-11-02 21:02:56,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:56,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:56,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:56,177 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:56,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:02:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:56,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:02:56,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:56,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:56,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:56,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:56,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114470290] [2022-11-02 21:02:56,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114470290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:56,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:56,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:56,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209788120] [2022-11-02 21:02:56,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:56,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:56,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:56,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:56,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:56,561 INFO L87 Difference]: Start difference. First operand 3289 states and 4767 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:56,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:56,704 INFO L93 Difference]: Finished difference Result 4485 states and 5980 transitions. [2022-11-02 21:02:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:56,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-02 21:02:56,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:56,717 INFO L225 Difference]: With dead ends: 4485 [2022-11-02 21:02:56,718 INFO L226 Difference]: Without dead ends: 4485 [2022-11-02 21:02:56,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:02:56,719 INFO L413 NwaCegarLoop]: 3093 mSDtfsCounter, 1785 mSDsluCounter, 4409 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 7502 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:56,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1795 Valid, 7502 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:02:56,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4485 states. [2022-11-02 21:02:56,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4485 to 3227. [2022-11-02 21:02:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 2462 states have (on average 1.8452477660438669) internal successors, (4543), 3202 states have internal predecessors, (4543), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:02:56,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 4593 transitions. [2022-11-02 21:02:56,787 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 4593 transitions. Word has length 22 [2022-11-02 21:02:56,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:56,787 INFO L495 AbstractCegarLoop]: Abstraction has 3227 states and 4593 transitions. [2022-11-02 21:02:56,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 4593 transitions. [2022-11-02 21:02:56,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 21:02:56,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:56,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:56,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:57,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:57,007 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:02:57,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:57,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519613, now seen corresponding path program 1 times [2022-11-02 21:02:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:57,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513907283] [2022-11-02 21:02:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:57,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:57,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:57,010 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:57,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:02:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:57,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:02:57,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:57,273 INFO L390 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 7 [2022-11-02 21:02:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:57,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:57,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:57,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513907283] [2022-11-02 21:02:57,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513907283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:57,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:57,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:02:57,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975078054] [2022-11-02 21:02:57,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:57,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:57,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:57,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:57,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:57,370 INFO L87 Difference]: Start difference. First operand 3227 states and 4593 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:02,520 INFO L93 Difference]: Finished difference Result 3502 states and 4766 transitions. [2022-11-02 21:03:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:03:02,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-02 21:03:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:02,530 INFO L225 Difference]: With dead ends: 3502 [2022-11-02 21:03:02,530 INFO L226 Difference]: Without dead ends: 3502 [2022-11-02 21:03:02,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:02,531 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 2363 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:02,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2369 Valid, 2017 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-02 21:03:02,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2022-11-02 21:03:02,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 3223. [2022-11-02 21:03:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 2462 states have (on average 1.8419983753046303) internal successors, (4535), 3198 states have internal predecessors, (4535), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:03:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4585 transitions. [2022-11-02 21:03:02,594 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4585 transitions. Word has length 27 [2022-11-02 21:03:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:02,594 INFO L495 AbstractCegarLoop]: Abstraction has 3223 states and 4585 transitions. [2022-11-02 21:03:02,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:02,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4585 transitions. [2022-11-02 21:03:02,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 21:03:02,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:02,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:02,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:02,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:02,808 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:03:02,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:02,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1056519614, now seen corresponding path program 1 times [2022-11-02 21:03:02,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:02,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555428801] [2022-11-02 21:03:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:02,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:02,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:02,812 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:02,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:03:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:03,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:03:03,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:03,122 INFO L390 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 [2022-11-02 21:03:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:03,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:03,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:03,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555428801] [2022-11-02 21:03:03,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555428801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:03,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:03,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:03,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576828924] [2022-11-02 21:03:03,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:03,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:03,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:03,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:03,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:03,339 INFO L87 Difference]: Start difference. First operand 3223 states and 4585 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:11,390 INFO L93 Difference]: Finished difference Result 3925 states and 5359 transitions. [2022-11-02 21:03:11,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:03:11,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-02 21:03:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:11,406 INFO L225 Difference]: With dead ends: 3925 [2022-11-02 21:03:11,406 INFO L226 Difference]: Without dead ends: 3925 [2022-11-02 21:03:11,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:11,410 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 1487 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 3475 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:11,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 3475 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2011 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-02 21:03:11,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2022-11-02 21:03:11,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3259. [2022-11-02 21:03:11,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3259 states, 2498 states have (on average 1.831865492393915) internal successors, (4576), 3234 states have internal predecessors, (4576), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:03:11,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 4626 transitions. [2022-11-02 21:03:11,483 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 4626 transitions. Word has length 27 [2022-11-02 21:03:11,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:11,483 INFO L495 AbstractCegarLoop]: Abstraction has 3259 states and 4626 transitions. [2022-11-02 21:03:11,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:11,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 4626 transitions. [2022-11-02 21:03:11,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 21:03:11,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:11,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:11,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:11,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:11,703 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:03:11,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:11,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2022-11-02 21:03:11,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:11,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618285351] [2022-11-02 21:03:11,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:11,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:11,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:11,707 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:11,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:03:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:12,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:03:12,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:12,065 INFO L390 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 7 [2022-11-02 21:03:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:12,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:12,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:12,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618285351] [2022-11-02 21:03:12,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618285351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:12,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:12,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:12,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793000788] [2022-11-02 21:03:12,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:12,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:12,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:12,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:12,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:12,190 INFO L87 Difference]: Start difference. First operand 3259 states and 4626 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:20,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:20,360 INFO L93 Difference]: Finished difference Result 6304 states and 8790 transitions. [2022-11-02 21:03:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:03:20,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 21:03:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:20,377 INFO L225 Difference]: With dead ends: 6304 [2022-11-02 21:03:20,377 INFO L226 Difference]: Without dead ends: 6304 [2022-11-02 21:03:20,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:20,378 INFO L413 NwaCegarLoop]: 2393 mSDtfsCounter, 3502 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 2544 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3509 SdHoareTripleChecker+Valid, 4226 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:20,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3509 Valid, 4226 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2544 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-02 21:03:20,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6304 states. [2022-11-02 21:03:20,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6304 to 3255. [2022-11-02 21:03:20,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3255 states, 2498 states have (on average 1.8286629303442754) internal successors, (4568), 3230 states have internal predecessors, (4568), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:03:20,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3255 states to 3255 states and 4618 transitions. [2022-11-02 21:03:20,458 INFO L78 Accepts]: Start accepts. Automaton has 3255 states and 4618 transitions. Word has length 36 [2022-11-02 21:03:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:20,458 INFO L495 AbstractCegarLoop]: Abstraction has 3255 states and 4618 transitions. [2022-11-02 21:03:20,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3255 states and 4618 transitions. [2022-11-02 21:03:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 21:03:20,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:20,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:20,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:20,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:20,675 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:03:20,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2022-11-02 21:03:20,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:20,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558376139] [2022-11-02 21:03:20,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:20,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:20,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:20,679 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:20,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:03:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:21,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:03:21,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:21,058 INFO L390 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 [2022-11-02 21:03:21,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:21,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:21,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:21,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558376139] [2022-11-02 21:03:21,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558376139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:21,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:21,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:21,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756260797] [2022-11-02 21:03:21,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:21,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:21,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:21,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:21,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:21,325 INFO L87 Difference]: Start difference. First operand 3255 states and 4618 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:32,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:32,371 INFO L93 Difference]: Finished difference Result 5973 states and 8166 transitions. [2022-11-02 21:03:32,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:03:32,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 21:03:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:32,382 INFO L225 Difference]: With dead ends: 5973 [2022-11-02 21:03:32,382 INFO L226 Difference]: Without dead ends: 5973 [2022-11-02 21:03:32,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:32,383 INFO L413 NwaCegarLoop]: 2332 mSDtfsCounter, 2860 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 2545 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2864 SdHoareTripleChecker+Valid, 4625 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:32,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2864 Valid, 4625 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2545 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2022-11-02 21:03:32,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5973 states. [2022-11-02 21:03:32,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5973 to 3251. [2022-11-02 21:03:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3251 states, 2498 states have (on average 1.8254603682946358) internal successors, (4560), 3226 states have internal predecessors, (4560), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:03:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3251 states to 3251 states and 4610 transitions. [2022-11-02 21:03:32,457 INFO L78 Accepts]: Start accepts. Automaton has 3251 states and 4610 transitions. Word has length 36 [2022-11-02 21:03:32,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:32,458 INFO L495 AbstractCegarLoop]: Abstraction has 3251 states and 4610 transitions. [2022-11-02 21:03:32,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:32,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3251 states and 4610 transitions. [2022-11-02 21:03:32,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 21:03:32,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:32,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:32,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:32,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:32,674 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:03:32,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:32,674 INFO L85 PathProgramCache]: Analyzing trace with hash -526454297, now seen corresponding path program 1 times [2022-11-02 21:03:32,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:32,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278120209] [2022-11-02 21:03:32,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:32,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:32,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:32,677 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:32,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:03:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:33,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:03:33,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:33,036 INFO L390 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 7 [2022-11-02 21:03:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:33,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:33,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:33,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278120209] [2022-11-02 21:03:33,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278120209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:33,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:33,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:33,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442009792] [2022-11-02 21:03:33,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:33,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:33,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:33,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:33,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:33,144 INFO L87 Difference]: Start difference. First operand 3251 states and 4610 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:41,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:41,773 INFO L93 Difference]: Finished difference Result 6748 states and 9302 transitions. [2022-11-02 21:03:41,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:03:41,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 21:03:41,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:41,784 INFO L225 Difference]: With dead ends: 6748 [2022-11-02 21:03:41,784 INFO L226 Difference]: Without dead ends: 6748 [2022-11-02 21:03:41,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:41,785 INFO L413 NwaCegarLoop]: 1965 mSDtfsCounter, 4494 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4504 SdHoareTripleChecker+Valid, 3990 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:41,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4504 Valid, 3990 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-02 21:03:41,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6748 states. [2022-11-02 21:03:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 3248. [2022-11-02 21:03:41,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3248 states, 2498 states have (on average 1.8166533226581265) internal successors, (4538), 3223 states have internal predecessors, (4538), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:03:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3248 states to 3248 states and 4588 transitions. [2022-11-02 21:03:41,868 INFO L78 Accepts]: Start accepts. Automaton has 3248 states and 4588 transitions. Word has length 36 [2022-11-02 21:03:41,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:41,869 INFO L495 AbstractCegarLoop]: Abstraction has 3248 states and 4588 transitions. [2022-11-02 21:03:41,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3248 states and 4588 transitions. [2022-11-02 21:03:41,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 21:03:41,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:41,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:41,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:42,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:42,084 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:03:42,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash -526454296, now seen corresponding path program 1 times [2022-11-02 21:03:42,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:42,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9050628] [2022-11-02 21:03:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:42,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:42,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:42,087 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:42,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:03:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:42,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:03:42,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:42,422 INFO L390 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 [2022-11-02 21:03:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:42,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:42,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:42,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9050628] [2022-11-02 21:03:42,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9050628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:42,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:42,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:42,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694969474] [2022-11-02 21:03:42,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:42,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:42,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:42,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:42,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:42,699 INFO L87 Difference]: Start difference. First operand 3248 states and 4588 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:51,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:51,495 INFO L93 Difference]: Finished difference Result 4807 states and 6551 transitions. [2022-11-02 21:03:51,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:03:51,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 21:03:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:51,503 INFO L225 Difference]: With dead ends: 4807 [2022-11-02 21:03:51,503 INFO L226 Difference]: Without dead ends: 4807 [2022-11-02 21:03:51,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:51,504 INFO L413 NwaCegarLoop]: 2238 mSDtfsCounter, 2208 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 2217 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2208 SdHoareTripleChecker+Valid, 4103 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:51,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2208 Valid, 4103 Invalid, 2229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2217 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-02 21:03:51,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4807 states. [2022-11-02 21:03:51,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4807 to 3248. [2022-11-02 21:03:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3248 states, 2498 states have (on average 1.8134507606084869) internal successors, (4530), 3223 states have internal predecessors, (4530), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:03:51,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3248 states to 3248 states and 4580 transitions. [2022-11-02 21:03:51,572 INFO L78 Accepts]: Start accepts. Automaton has 3248 states and 4580 transitions. Word has length 36 [2022-11-02 21:03:51,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:51,572 INFO L495 AbstractCegarLoop]: Abstraction has 3248 states and 4580 transitions. [2022-11-02 21:03:51,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:51,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3248 states and 4580 transitions. [2022-11-02 21:03:51,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 21:03:51,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:51,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:51,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:51,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:51,789 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:03:51,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:51,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1782356879, now seen corresponding path program 1 times [2022-11-02 21:03:51,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:51,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067469159] [2022-11-02 21:03:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:51,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:51,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:51,792 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:51,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:03:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:52,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:52,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:52,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:52,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:52,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067469159] [2022-11-02 21:03:52,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067469159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:52,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:52,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:52,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382328802] [2022-11-02 21:03:52,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:52,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:52,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:52,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:52,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:52,210 INFO L87 Difference]: Start difference. First operand 3248 states and 4580 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:52,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:52,337 INFO L93 Difference]: Finished difference Result 3236 states and 4556 transitions. [2022-11-02 21:03:52,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:03:52,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-02 21:03:52,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:52,343 INFO L225 Difference]: With dead ends: 3236 [2022-11-02 21:03:52,344 INFO L226 Difference]: Without dead ends: 3236 [2022-11-02 21:03:52,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:52,345 INFO L413 NwaCegarLoop]: 1797 mSDtfsCounter, 756 mSDsluCounter, 2825 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 4622 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:52,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 4622 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:52,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2022-11-02 21:03:52,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 3236. [2022-11-02 21:03:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 2486 states have (on average 1.8125502815768302) internal successors, (4506), 3211 states have internal predecessors, (4506), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:03:52,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 4556 transitions. [2022-11-02 21:03:52,401 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 4556 transitions. Word has length 40 [2022-11-02 21:03:52,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:52,401 INFO L495 AbstractCegarLoop]: Abstraction has 3236 states and 4556 transitions. [2022-11-02 21:03:52,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:52,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 4556 transitions. [2022-11-02 21:03:52,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 21:03:52,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:52,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:52,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:52,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:52,619 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:03:52,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:52,619 INFO L85 PathProgramCache]: Analyzing trace with hash -263031357, now seen corresponding path program 1 times [2022-11-02 21:03:52,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:52,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876881547] [2022-11-02 21:03:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:52,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:52,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:52,621 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:52,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:03:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:52,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:52,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:53,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:53,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:53,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876881547] [2022-11-02 21:03:53,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876881547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:53,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:53,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:53,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660740896] [2022-11-02 21:03:53,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:53,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:53,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:53,270 INFO L87 Difference]: Start difference. First operand 3236 states and 4556 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:53,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:53,527 INFO L93 Difference]: Finished difference Result 4684 states and 6375 transitions. [2022-11-02 21:03:53,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:53,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-02 21:03:53,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:53,536 INFO L225 Difference]: With dead ends: 4684 [2022-11-02 21:03:53,536 INFO L226 Difference]: Without dead ends: 4684 [2022-11-02 21:03:53,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:53,538 INFO L413 NwaCegarLoop]: 1820 mSDtfsCounter, 1180 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 3502 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:53,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 3502 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:03:53,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2022-11-02 21:03:53,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 4020. [2022-11-02 21:03:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4020 states, 3266 states have (on average 1.7988364972443356) internal successors, (5875), 3988 states have internal predecessors, (5875), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-02 21:03:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4020 states to 4020 states and 5939 transitions. [2022-11-02 21:03:53,647 INFO L78 Accepts]: Start accepts. Automaton has 4020 states and 5939 transitions. Word has length 48 [2022-11-02 21:03:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:53,648 INFO L495 AbstractCegarLoop]: Abstraction has 4020 states and 5939 transitions. [2022-11-02 21:03:53,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states and 5939 transitions. [2022-11-02 21:03:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 21:03:53,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:53,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:53,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:53,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:53,850 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:03:53,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:53,850 INFO L85 PathProgramCache]: Analyzing trace with hash -435335443, now seen corresponding path program 1 times [2022-11-02 21:03:53,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:53,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001833586] [2022-11-02 21:03:53,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:53,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:53,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:53,854 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:53,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:03:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:54,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:54,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:54,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:54,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:54,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001833586] [2022-11-02 21:03:54,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001833586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:54,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:54,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:54,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852448449] [2022-11-02 21:03:54,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:54,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:54,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:54,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:54,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:54,319 INFO L87 Difference]: Start difference. First operand 4020 states and 5939 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:54,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:54,425 INFO L93 Difference]: Finished difference Result 4959 states and 6922 transitions. [2022-11-02 21:03:54,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:03:54,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-02 21:03:54,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:54,434 INFO L225 Difference]: With dead ends: 4959 [2022-11-02 21:03:54,435 INFO L226 Difference]: Without dead ends: 4959 [2022-11-02 21:03:54,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:54,436 INFO L413 NwaCegarLoop]: 2867 mSDtfsCounter, 1755 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 6826 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:54,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 6826 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:54,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4959 states. [2022-11-02 21:03:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4959 to 3978. [2022-11-02 21:03:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 3224 states have (on average 1.8005583126550868) internal successors, (5805), 3946 states have internal predecessors, (5805), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-02 21:03:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 5869 transitions. [2022-11-02 21:03:54,513 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 5869 transitions. Word has length 51 [2022-11-02 21:03:54,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:54,514 INFO L495 AbstractCegarLoop]: Abstraction has 3978 states and 5869 transitions. [2022-11-02 21:03:54,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:54,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 5869 transitions. [2022-11-02 21:03:54,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 21:03:54,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:54,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:54,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:54,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:54,733 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:03:54,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:54,734 INFO L85 PathProgramCache]: Analyzing trace with hash -273786554, now seen corresponding path program 1 times [2022-11-02 21:03:54,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:54,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638921445] [2022-11-02 21:03:54,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:54,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:54,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:54,736 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:54,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:03:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:55,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:55,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:55,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:55,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:55,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638921445] [2022-11-02 21:03:55,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638921445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:55,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:55,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:55,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177227968] [2022-11-02 21:03:55,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:55,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:55,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:55,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:55,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:55,220 INFO L87 Difference]: Start difference. First operand 3978 states and 5869 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:55,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:55,328 INFO L93 Difference]: Finished difference Result 4695 states and 6408 transitions. [2022-11-02 21:03:55,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:03:55,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-02 21:03:55,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:55,336 INFO L225 Difference]: With dead ends: 4695 [2022-11-02 21:03:55,336 INFO L226 Difference]: Without dead ends: 4695 [2022-11-02 21:03:55,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:55,340 INFO L413 NwaCegarLoop]: 2907 mSDtfsCounter, 1746 mSDsluCounter, 4048 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 6955 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:55,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 6955 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:03:55,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4695 states. [2022-11-02 21:03:55,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4695 to 3960. [2022-11-02 21:03:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3960 states, 3206 states have (on average 1.8013100436681222) internal successors, (5775), 3928 states have internal predecessors, (5775), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-02 21:03:55,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3960 states to 3960 states and 5839 transitions. [2022-11-02 21:03:55,408 INFO L78 Accepts]: Start accepts. Automaton has 3960 states and 5839 transitions. Word has length 54 [2022-11-02 21:03:55,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:55,408 INFO L495 AbstractCegarLoop]: Abstraction has 3960 states and 5839 transitions. [2022-11-02 21:03:55,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:55,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3960 states and 5839 transitions. [2022-11-02 21:03:55,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-02 21:03:55,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:55,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:55,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:55,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:55,627 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:03:55,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:55,628 INFO L85 PathProgramCache]: Analyzing trace with hash -495130849, now seen corresponding path program 1 times [2022-11-02 21:03:55,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:55,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965125255] [2022-11-02 21:03:55,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:55,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:55,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:55,630 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:55,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:03:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:55,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:03:55,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:55,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:03:55,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:03:55,960 INFO L390 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 29 treesize of output 38 [2022-11-02 21:03:56,029 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:03:56,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2022-11-02 21:03:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:56,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:56,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:56,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965125255] [2022-11-02 21:03:56,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965125255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:56,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:56,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:03:56,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545633286] [2022-11-02 21:03:56,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:56,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:03:56,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:56,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:03:56,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:03:56,074 INFO L87 Difference]: Start difference. First operand 3960 states and 5839 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:58,388 INFO L93 Difference]: Finished difference Result 3926 states and 5804 transitions. [2022-11-02 21:03:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:03:58,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-02 21:03:58,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:58,396 INFO L225 Difference]: With dead ends: 3926 [2022-11-02 21:03:58,396 INFO L226 Difference]: Without dead ends: 3926 [2022-11-02 21:03:58,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:58,397 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 759 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 4259 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:58,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 4259 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 277 Invalid, 0 Unknown, 112 Unchecked, 2.2s Time] [2022-11-02 21:03:58,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3926 states. [2022-11-02 21:03:58,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3926 to 3926. [2022-11-02 21:03:58,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3926 states, 3172 states have (on average 1.8095838587641866) internal successors, (5740), 3894 states have internal predecessors, (5740), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-02 21:03:58,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3926 states to 3926 states and 5804 transitions. [2022-11-02 21:03:58,463 INFO L78 Accepts]: Start accepts. Automaton has 3926 states and 5804 transitions. Word has length 57 [2022-11-02 21:03:58,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:58,463 INFO L495 AbstractCegarLoop]: Abstraction has 3926 states and 5804 transitions. [2022-11-02 21:03:58,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3926 states and 5804 transitions. [2022-11-02 21:03:58,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-02 21:03:58,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:58,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:58,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:58,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:58,690 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:03:58,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash 122106401, now seen corresponding path program 1 times [2022-11-02 21:03:58,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:58,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141614550] [2022-11-02 21:03:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:58,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:58,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:58,693 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:58,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 21:03:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:59,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:03:59,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:59,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:59,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:59,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141614550] [2022-11-02 21:03:59,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141614550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:59,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:59,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:03:59,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120699155] [2022-11-02 21:03:59,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:59,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:03:59,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:59,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:03:59,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:59,319 INFO L87 Difference]: Start difference. First operand 3926 states and 5804 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:59,563 INFO L93 Difference]: Finished difference Result 5186 states and 7398 transitions. [2022-11-02 21:03:59,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:03:59,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-11-02 21:03:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:59,571 INFO L225 Difference]: With dead ends: 5186 [2022-11-02 21:03:59,571 INFO L226 Difference]: Without dead ends: 5186 [2022-11-02 21:03:59,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:03:59,572 INFO L413 NwaCegarLoop]: 1948 mSDtfsCounter, 870 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 3621 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:59,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 3621 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:03:59,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2022-11-02 21:03:59,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 4843. [2022-11-02 21:03:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4843 states, 4083 states have (on average 1.7891256429096252) internal successors, (7305), 4802 states have internal predecessors, (7305), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-02 21:03:59,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4843 states to 4843 states and 7387 transitions. [2022-11-02 21:03:59,638 INFO L78 Accepts]: Start accepts. Automaton has 4843 states and 7387 transitions. Word has length 59 [2022-11-02 21:03:59,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:59,639 INFO L495 AbstractCegarLoop]: Abstraction has 4843 states and 7387 transitions. [2022-11-02 21:03:59,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:59,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4843 states and 7387 transitions. [2022-11-02 21:03:59,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 21:03:59,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:59,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:59,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-02 21:03:59,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:59,855 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:03:59,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:59,856 INFO L85 PathProgramCache]: Analyzing trace with hash -45497454, now seen corresponding path program 1 times [2022-11-02 21:03:59,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:59,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982430031] [2022-11-02 21:03:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:59,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:59,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:59,859 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:59,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 21:04:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:00,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:04:00,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:00,463 INFO L390 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 [2022-11-02 21:04:00,472 INFO L390 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 7 [2022-11-02 21:04:01,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:04:01,096 INFO L390 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 [2022-11-02 21:04:01,115 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 21:04:01,116 INFO L390 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 13 treesize of output 13 [2022-11-02 21:04:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:01,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:01,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:01,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982430031] [2022-11-02 21:04:01,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982430031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:01,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:01,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:01,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283705020] [2022-11-02 21:04:01,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:01,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:01,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:01,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:01,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:01,139 INFO L87 Difference]: Start difference. First operand 4843 states and 7387 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 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) [2022-11-02 21:04:07,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:07,044 INFO L93 Difference]: Finished difference Result 6874 states and 10400 transitions. [2022-11-02 21:04:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:04:07,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 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 62 [2022-11-02 21:04:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:07,056 INFO L225 Difference]: With dead ends: 6874 [2022-11-02 21:04:07,056 INFO L226 Difference]: Without dead ends: 6874 [2022-11-02 21:04:07,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:07,057 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 4069 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:07,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4083 Valid, 1047 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1562 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-02 21:04:07,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6874 states. [2022-11-02 21:04:07,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6874 to 4603. [2022-11-02 21:04:07,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 3927 states have (on average 1.7122485357779476) internal successors, (6724), 4562 states have internal predecessors, (6724), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-02 21:04:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 6806 transitions. [2022-11-02 21:04:07,135 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 6806 transitions. Word has length 62 [2022-11-02 21:04:07,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:07,136 INFO L495 AbstractCegarLoop]: Abstraction has 4603 states and 6806 transitions. [2022-11-02 21:04:07,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 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) [2022-11-02 21:04:07,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 6806 transitions. [2022-11-02 21:04:07,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 21:04:07,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:07,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:07,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:07,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:07,354 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:04:07,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:07,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391416, now seen corresponding path program 1 times [2022-11-02 21:04:07,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:07,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012416332] [2022-11-02 21:04:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:07,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:07,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:07,357 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:07,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 21:04:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:07,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:04:07,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:07,827 INFO L390 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 7 [2022-11-02 21:04:07,841 INFO L390 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 [2022-11-02 21:04:07,880 INFO L390 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 23 treesize of output 11 [2022-11-02 21:04:07,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:07,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:07,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:07,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012416332] [2022-11-02 21:04:07,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012416332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:07,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:07,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:07,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000252782] [2022-11-02 21:04:07,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:07,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:04:07,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:07,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:04:07,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:07,900 INFO L87 Difference]: Start difference. First operand 4603 states and 6806 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:13,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:13,472 INFO L93 Difference]: Finished difference Result 4602 states and 6803 transitions. [2022-11-02 21:04:13,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:04:13,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-02 21:04:13,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:13,480 INFO L225 Difference]: With dead ends: 4602 [2022-11-02 21:04:13,480 INFO L226 Difference]: Without dead ends: 4602 [2022-11-02 21:04:13,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:13,481 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 4 mSDsluCounter, 2873 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4589 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:13,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4589 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-02 21:04:13,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2022-11-02 21:04:13,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 4602. [2022-11-02 21:04:13,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4602 states, 3927 states have (on average 1.711484593837535) internal successors, (6721), 4561 states have internal predecessors, (6721), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-02 21:04:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4602 states to 4602 states and 6803 transitions. [2022-11-02 21:04:13,569 INFO L78 Accepts]: Start accepts. Automaton has 4602 states and 6803 transitions. Word has length 67 [2022-11-02 21:04:13,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:13,569 INFO L495 AbstractCegarLoop]: Abstraction has 4602 states and 6803 transitions. [2022-11-02 21:04:13,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:13,570 INFO L276 IsEmpty]: Start isEmpty. Operand 4602 states and 6803 transitions. [2022-11-02 21:04:13,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 21:04:13,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:13,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:13,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-02 21:04:13,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:13,771 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:04:13,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:13,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1308391415, now seen corresponding path program 1 times [2022-11-02 21:04:13,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:13,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57252069] [2022-11-02 21:04:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:13,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:13,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:13,774 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:13,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 21:04:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:14,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:04:14,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:14,192 INFO L390 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 [2022-11-02 21:04:14,211 INFO L390 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 [2022-11-02 21:04:14,223 INFO L390 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 [2022-11-02 21:04:14,279 INFO L390 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 21 treesize of output 9 [2022-11-02 21:04:14,287 INFO L390 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 19 treesize of output 7 [2022-11-02 21:04:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:14,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:14,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:14,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57252069] [2022-11-02 21:04:14,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57252069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:14,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:14,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:14,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723267294] [2022-11-02 21:04:14,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:14,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:04:14,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:14,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:04:14,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:14,309 INFO L87 Difference]: Start difference. First operand 4602 states and 6803 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:21,905 INFO L93 Difference]: Finished difference Result 4601 states and 6800 transitions. [2022-11-02 21:04:21,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:04:21,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-02 21:04:21,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:21,912 INFO L225 Difference]: With dead ends: 4601 [2022-11-02 21:04:21,912 INFO L226 Difference]: Without dead ends: 4601 [2022-11-02 21:04:21,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:21,913 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 2 mSDsluCounter, 2846 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4562 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:21,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4562 Invalid, 2306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-02 21:04:21,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2022-11-02 21:04:21,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 4601. [2022-11-02 21:04:21,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4601 states, 3924 states have (on average 1.7120285423037718) internal successors, (6718), 4560 states have internal predecessors, (6718), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-02 21:04:21,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 6800 transitions. [2022-11-02 21:04:21,968 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 6800 transitions. Word has length 67 [2022-11-02 21:04:21,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:21,968 INFO L495 AbstractCegarLoop]: Abstraction has 4601 states and 6800 transitions. [2022-11-02 21:04:21,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 6800 transitions. [2022-11-02 21:04:21,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 21:04:21,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:21,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:21,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:22,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:22,186 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:04:22,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:22,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564532, now seen corresponding path program 1 times [2022-11-02 21:04:22,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:22,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076198386] [2022-11-02 21:04:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:22,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:22,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:22,188 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:22,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 21:04:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:22,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:04:22,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:22,571 INFO L390 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 7 [2022-11-02 21:04:22,585 INFO L390 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 [2022-11-02 21:04:22,617 INFO L390 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 23 treesize of output 11 [2022-11-02 21:04:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:22,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:22,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:22,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076198386] [2022-11-02 21:04:22,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076198386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:22,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:22,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:22,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182634230] [2022-11-02 21:04:22,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:22,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:04:22,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:22,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:04:22,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:22,632 INFO L87 Difference]: Start difference. First operand 4601 states and 6800 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:27,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:27,902 INFO L93 Difference]: Finished difference Result 4600 states and 6796 transitions. [2022-11-02 21:04:27,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:04:27,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-02 21:04:27,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:27,909 INFO L225 Difference]: With dead ends: 4600 [2022-11-02 21:04:27,909 INFO L226 Difference]: Without dead ends: 4600 [2022-11-02 21:04:27,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:27,910 INFO L413 NwaCegarLoop]: 1714 mSDtfsCounter, 4 mSDsluCounter, 2870 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4584 SdHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:27,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4584 Invalid, 2278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-02 21:04:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4600 states. [2022-11-02 21:04:27,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4600 to 4600. [2022-11-02 21:04:27,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4600 states, 3924 states have (on average 1.7110091743119267) internal successors, (6714), 4559 states have internal predecessors, (6714), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-02 21:04:27,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4600 states to 4600 states and 6796 transitions. [2022-11-02 21:04:27,969 INFO L78 Accepts]: Start accepts. Automaton has 4600 states and 6796 transitions. Word has length 67 [2022-11-02 21:04:27,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:27,970 INFO L495 AbstractCegarLoop]: Abstraction has 4600 states and 6796 transitions. [2022-11-02 21:04:27,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:27,970 INFO L276 IsEmpty]: Start isEmpty. Operand 4600 states and 6796 transitions. [2022-11-02 21:04:27,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 21:04:27,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:27,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:27,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:28,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:28,172 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:04:28,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:28,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1173564533, now seen corresponding path program 1 times [2022-11-02 21:04:28,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:28,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741127262] [2022-11-02 21:04:28,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:28,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:28,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:28,175 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:28,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 21:04:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:04:28,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:28,561 INFO L390 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 [2022-11-02 21:04:28,595 INFO L390 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 [2022-11-02 21:04:28,604 INFO L390 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 [2022-11-02 21:04:28,663 INFO L390 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 21 treesize of output 9 [2022-11-02 21:04:28,666 INFO L390 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 19 treesize of output 7 [2022-11-02 21:04:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:28,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:28,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:28,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741127262] [2022-11-02 21:04:28,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741127262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:28,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:28,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:28,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797147422] [2022-11-02 21:04:28,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:28,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:04:28,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:28,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:04:28,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:28,688 INFO L87 Difference]: Start difference. First operand 4600 states and 6796 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:35,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:35,773 INFO L93 Difference]: Finished difference Result 4599 states and 6792 transitions. [2022-11-02 21:04:35,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:04:35,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-02 21:04:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:35,779 INFO L225 Difference]: With dead ends: 4599 [2022-11-02 21:04:35,779 INFO L226 Difference]: Without dead ends: 4599 [2022-11-02 21:04:35,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:35,780 INFO L413 NwaCegarLoop]: 1714 mSDtfsCounter, 2 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4557 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:35,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4557 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2302 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-02 21:04:35,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4599 states. [2022-11-02 21:04:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4599 to 4599. [2022-11-02 21:04:35,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4599 states, 3920 states have (on average 1.711734693877551) internal successors, (6710), 4558 states have internal predecessors, (6710), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-02 21:04:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 6792 transitions. [2022-11-02 21:04:35,859 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 6792 transitions. Word has length 67 [2022-11-02 21:04:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:35,859 INFO L495 AbstractCegarLoop]: Abstraction has 4599 states and 6792 transitions. [2022-11-02 21:04:35,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:35,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 6792 transitions. [2022-11-02 21:04:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-02 21:04:35,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:35,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:35,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:36,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:36,091 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:04:36,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:36,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2062362287, now seen corresponding path program 1 times [2022-11-02 21:04:36,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:36,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953941434] [2022-11-02 21:04:36,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:36,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:36,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:36,094 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:36,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 21:04:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:36,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:04:36,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:36,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:36,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:36,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953941434] [2022-11-02 21:04:36,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953941434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:36,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:36,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:04:36,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750670011] [2022-11-02 21:04:36,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:36,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:36,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:36,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:36,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:36,560 INFO L87 Difference]: Start difference. First operand 4599 states and 6792 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:04:36,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:36,646 INFO L93 Difference]: Finished difference Result 4602 states and 6801 transitions. [2022-11-02 21:04:36,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:04:36,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2022-11-02 21:04:36,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:36,671 INFO L225 Difference]: With dead ends: 4602 [2022-11-02 21:04:36,672 INFO L226 Difference]: Without dead ends: 4602 [2022-11-02 21:04:36,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:36,673 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 2 mSDsluCounter, 3418 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5131 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:36,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5131 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:36,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2022-11-02 21:04:36,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 4602. [2022-11-02 21:04:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4602 states, 3922 states have (on average 1.7116267210606833) internal successors, (6713), 4561 states have internal predecessors, (6713), 41 states have call successors, (41), 3 states have call predecessors, (41), 4 states have return successors, (47), 38 states have call predecessors, (47), 41 states have call successors, (47) [2022-11-02 21:04:36,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4602 states to 4602 states and 6801 transitions. [2022-11-02 21:04:36,824 INFO L78 Accepts]: Start accepts. Automaton has 4602 states and 6801 transitions. Word has length 75 [2022-11-02 21:04:36,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:36,824 INFO L495 AbstractCegarLoop]: Abstraction has 4602 states and 6801 transitions. [2022-11-02 21:04:36,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:04:36,825 INFO L276 IsEmpty]: Start isEmpty. Operand 4602 states and 6801 transitions. [2022-11-02 21:04:36,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 21:04:36,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:36,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:36,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:37,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:37,041 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:04:37,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1092552202, now seen corresponding path program 1 times [2022-11-02 21:04:37,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:37,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077397069] [2022-11-02 21:04:37,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:37,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:37,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:37,043 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:37,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 21:04:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:37,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:04:37,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:37,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:37,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:37,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077397069] [2022-11-02 21:04:37,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077397069] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:37,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:37,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 21:04:37,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244714402] [2022-11-02 21:04:37,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:37,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:04:37,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:37,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:04:37,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:37,570 INFO L87 Difference]: Start difference. First operand 4602 states and 6801 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:04:37,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:37,843 INFO L93 Difference]: Finished difference Result 4614 states and 6823 transitions. [2022-11-02 21:04:37,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:04:37,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2022-11-02 21:04:37,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:37,855 INFO L225 Difference]: With dead ends: 4614 [2022-11-02 21:04:37,856 INFO L226 Difference]: Without dead ends: 4614 [2022-11-02 21:04:37,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:04:37,856 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 15 mSDsluCounter, 6827 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 8540 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:37,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 8540 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:37,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4614 states. [2022-11-02 21:04:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4614 to 4612. [2022-11-02 21:04:37,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4612 states, 3931 states have (on average 1.7115237852963623) internal successors, (6728), 4570 states have internal predecessors, (6728), 41 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (47), 38 states have call predecessors, (47), 41 states have call successors, (47) [2022-11-02 21:04:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 6816 transitions. [2022-11-02 21:04:37,941 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 6816 transitions. Word has length 76 [2022-11-02 21:04:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:37,941 INFO L495 AbstractCegarLoop]: Abstraction has 4612 states and 6816 transitions. [2022-11-02 21:04:37,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:04:37,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 6816 transitions. [2022-11-02 21:04:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 21:04:37,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:37,944 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:37,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:38,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:38,157 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:04:38,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:38,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1024769937, now seen corresponding path program 2 times [2022-11-02 21:04:38,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:38,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933892244] [2022-11-02 21:04:38,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:04:38,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:38,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:38,160 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:38,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 21:04:38,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:04:38,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:38,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:04:38,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:38,917 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:38,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:39,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:39,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933892244] [2022-11-02 21:04:39,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933892244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:39,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:39,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 21:04:39,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561489117] [2022-11-02 21:04:39,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:39,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:04:39,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:39,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:04:39,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:04:39,195 INFO L87 Difference]: Start difference. First operand 4612 states and 6816 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:04:40,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:40,233 INFO L93 Difference]: Finished difference Result 4633 states and 6864 transitions. [2022-11-02 21:04:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 21:04:40,241 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2022-11-02 21:04:40,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:40,252 INFO L225 Difference]: With dead ends: 4633 [2022-11-02 21:04:40,252 INFO L226 Difference]: Without dead ends: 4629 [2022-11-02 21:04:40,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:04:40,253 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 50 mSDsluCounter, 10264 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 11980 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:40,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 11980 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:04:40,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2022-11-02 21:04:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 4621. [2022-11-02 21:04:40,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4621 states, 3940 states have (on average 1.7106598984771573) internal successors, (6740), 4579 states have internal predecessors, (6740), 41 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (47), 38 states have call predecessors, (47), 41 states have call successors, (47) [2022-11-02 21:04:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4621 states to 4621 states and 6828 transitions. [2022-11-02 21:04:40,317 INFO L78 Accepts]: Start accepts. Automaton has 4621 states and 6828 transitions. Word has length 79 [2022-11-02 21:04:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:40,317 INFO L495 AbstractCegarLoop]: Abstraction has 4621 states and 6828 transitions. [2022-11-02 21:04:40,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:04:40,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4621 states and 6828 transitions. [2022-11-02 21:04:40,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-02 21:04:40,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:40,319 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:40,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-02 21:04:40,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:40,537 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:04:40,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:40,538 INFO L85 PathProgramCache]: Analyzing trace with hash 876217103, now seen corresponding path program 3 times [2022-11-02 21:04:40,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:40,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373973107] [2022-11-02 21:04:40,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:04:40,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:40,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:40,540 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:40,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 21:04:41,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 21:04:41,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:41,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:04:41,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:41,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:42,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:42,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373973107] [2022-11-02 21:04:42,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373973107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:42,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:42,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-02 21:04:42,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916011014] [2022-11-02 21:04:42,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:42,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 21:04:42,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 21:04:42,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-11-02 21:04:42,750 INFO L87 Difference]: Start difference. First operand 4621 states and 6828 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:04:48,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:48,214 INFO L93 Difference]: Finished difference Result 4663 states and 6965 transitions. [2022-11-02 21:04:48,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 21:04:48,215 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 85 [2022-11-02 21:04:48,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:48,224 INFO L225 Difference]: With dead ends: 4663 [2022-11-02 21:04:48,225 INFO L226 Difference]: Without dead ends: 4657 [2022-11-02 21:04:48,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2022-11-02 21:04:48,226 INFO L413 NwaCegarLoop]: 1720 mSDtfsCounter, 125 mSDsluCounter, 20567 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 22287 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:48,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 22287 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 21:04:48,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4657 states. [2022-11-02 21:04:48,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4657 to 4639. [2022-11-02 21:04:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4639 states, 3958 states have (on average 1.7086912582112177) internal successors, (6763), 4597 states have internal predecessors, (6763), 41 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (47), 38 states have call predecessors, (47), 41 states have call successors, (47) [2022-11-02 21:04:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4639 states to 4639 states and 6851 transitions. [2022-11-02 21:04:48,295 INFO L78 Accepts]: Start accepts. Automaton has 4639 states and 6851 transitions. Word has length 85 [2022-11-02 21:04:48,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:48,296 INFO L495 AbstractCegarLoop]: Abstraction has 4639 states and 6851 transitions. [2022-11-02 21:04:48,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:04:48,296 INFO L276 IsEmpty]: Start isEmpty. Operand 4639 states and 6851 transitions. [2022-11-02 21:04:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-02 21:04:48,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:48,298 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:48,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:48,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:48,520 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:04:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash -990633905, now seen corresponding path program 4 times [2022-11-02 21:04:48,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:48,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741151980] [2022-11-02 21:04:48,521 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:04:48,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:48,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:48,522 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:48,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 21:04:49,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:04:49,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:49,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:04:49,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:49,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:52,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:52,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741151980] [2022-11-02 21:04:52,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741151980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:52,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:52,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-02 21:04:52,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889459148] [2022-11-02 21:04:52,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:52,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 21:04:52,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:52,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 21:04:52,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 21:04:52,233 INFO L87 Difference]: Start difference. First operand 4639 states and 6851 transitions. Second operand has 50 states, 50 states have (on average 2.4) internal successors, (120), 50 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:05:13,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:13,938 INFO L93 Difference]: Finished difference Result 4719 states and 7068 transitions. [2022-11-02 21:05:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-11-02 21:05:13,939 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.4) internal successors, (120), 50 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 97 [2022-11-02 21:05:13,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:13,948 INFO L225 Difference]: With dead ends: 4719 [2022-11-02 21:05:13,948 INFO L226 Difference]: Without dead ends: 4715 [2022-11-02 21:05:13,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2022-11-02 21:05:13,954 INFO L413 NwaCegarLoop]: 1733 mSDtfsCounter, 419 mSDsluCounter, 41453 mSDsCounter, 0 mSdLazyCounter, 3046 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 43186 SdHoareTripleChecker+Invalid, 3506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 3046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:13,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 43186 Invalid, 3506 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [460 Valid, 3046 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-02 21:05:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2022-11-02 21:05:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4673. [2022-11-02 21:05:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4673 states, 3992 states have (on average 1.7056613226452906) internal successors, (6809), 4631 states have internal predecessors, (6809), 41 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (47), 38 states have call predecessors, (47), 41 states have call successors, (47) [2022-11-02 21:05:14,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 6897 transitions. [2022-11-02 21:05:14,024 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 6897 transitions. Word has length 97 [2022-11-02 21:05:14,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:14,025 INFO L495 AbstractCegarLoop]: Abstraction has 4673 states and 6897 transitions. [2022-11-02 21:05:14,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.4) internal successors, (120), 50 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:05:14,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 6897 transitions. [2022-11-02 21:05:14,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-02 21:05:14,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:14,029 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:14,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:14,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:14,247 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2022-11-02 21:05:14,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:14,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1014357521, now seen corresponding path program 5 times [2022-11-02 21:05:14,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:14,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170649662] [2022-11-02 21:05:14,248 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:05:14,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:14,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:14,249 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:14,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 21:05:15,853 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-02 21:05:15,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:15,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-02 21:05:15,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:15,904 INFO L390 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 7 [2022-11-02 21:05:16,056 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 21:05:16,057 INFO L390 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 19 treesize of output 27 [2022-11-02 21:05:16,089 INFO L390 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 [2022-11-02 21:05:16,190 INFO L390 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 [2022-11-02 21:05:16,487 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_19 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| v_arrayElimCell_19) (_ bv1 1))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_19 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2627 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2627) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 21:05:16,509 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_19 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| v_arrayElimCell_19) (_ bv1 1))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_19 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2628 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2628)))) is different from true [2022-11-02 21:05:16,534 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_19 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| v_arrayElimCell_19) (_ bv1 1))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_19 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2629 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2629)))) is different from true [2022-11-02 21:05:16,736 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_19 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| v_arrayElimCell_19) (_ bv1 1))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_19 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2634 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2634)))) is different from true [2022-11-02 21:05:17,261 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_19 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| v_arrayElimCell_19) (_ bv1 1))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_19 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2648 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2648)))) is different from true [2022-11-02 21:05:17,573 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_19 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| v_arrayElimCell_19) (_ bv1 1))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_19 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2656 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2656)))) is different from true [2022-11-02 21:05:17,802 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_19 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| v_arrayElimCell_19) (_ bv1 1))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_19 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2662 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2662) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 21:05:17,897 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1| (_ BitVec 32)) (v_arrayElimCell_19 (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| v_arrayElimCell_19) (_ bv1 1))) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_19 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_1|)))) (exists ((v_ArrVal_2665 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2665)))) is different from true [2022-11-02 21:05:17,997 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 21:05:17,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-02 21:05:18,056 INFO L390 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 33 treesize of output 15 [2022-11-02 21:05:18,095 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 630 trivial. 324 not checked. [2022-11-02 21:05:18,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:18,440 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2712 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_2712) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2022-11-02 21:05:18,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:18,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170649662] [2022-11-02 21:05:18,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170649662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:18,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [740717525] [2022-11-02 21:05:18,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:05:18,443 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 21:05:18,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 21:05:18,446 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 21:05:18,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d79ce92-0757-4c7b-84c7-3830ba1d7938/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process