./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/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 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf --- 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 20:49:04,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:49:04,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:49:04,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:49:04,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:49:04,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:49:04,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:49:04,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:49:04,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:49:04,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:49:04,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:49:04,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:49:04,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:49:04,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:49:04,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:49:04,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:49:04,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:49:04,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:49:04,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:49:04,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:49:04,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:49:04,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:49:04,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:49:04,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:49:04,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:49:04,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:49:04,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:49:04,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:49:04,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:49:04,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:49:04,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:49:04,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:49:04,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:49:04,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:49:04,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:49:04,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:49:04,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:49:04,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:49:04,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:49:04,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:49:04,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:49:04,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-02 20:49:04,846 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:49:04,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:49:04,846 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:49:04,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:49:04,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:49:04,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:49:04,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:49:04,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:49:04,849 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:49:04,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:49:04,850 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:49:04,850 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:49:04,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:49:04,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:49:04,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:49:04,851 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:49:04,851 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:49:04,851 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:49:04,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:49:04,852 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:49:04,852 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:49:04,852 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:49:04,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:49:04,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:49:04,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:49:04,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:49:04,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:49:04,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:49:04,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:49:04,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:49:04,855 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf [2022-11-02 20:49:05,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:49:05,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:49:05,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:49:05,158 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:49:05,159 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:49:05,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2022-11-02 20:49:05,261 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/data/744936dd6/2148a3cdc28d433799247be127fb91a5/FLAGcd344c0c5 [2022-11-02 20:49:06,121 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:49:06,121 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2022-11-02 20:49:06,142 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/data/744936dd6/2148a3cdc28d433799247be127fb91a5/FLAGcd344c0c5 [2022-11-02 20:49:06,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/data/744936dd6/2148a3cdc28d433799247be127fb91a5 [2022-11-02 20:49:06,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:49:06,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:49:06,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:49:06,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:49:06,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:49:06,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:49:06" (1/1) ... [2022-11-02 20:49:06,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5872d99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:06, skipping insertion in model container [2022-11-02 20:49:06,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:49:06" (1/1) ... [2022-11-02 20:49:06,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:49:06,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:49:07,168 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2022-11-02 20:49:07,195 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2022-11-02 20:49:07,360 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2022-11-02 20:49:07,361 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2022-11-02 20:49:07,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:49:07,396 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 20:49:07,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4fbc12f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:07, skipping insertion in model container [2022-11-02 20:49:07,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:49:07,397 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-02 20:49:07,400 INFO L158 Benchmark]: Toolchain (without parser) took 1109.60ms. Allocated memory is still 119.5MB. Free memory was 82.1MB in the beginning and 80.6MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:49:07,401 INFO L158 Benchmark]: CDTParser took 0.90ms. Allocated memory is still 86.0MB. Free memory was 40.8MB in the beginning and 40.7MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:49:07,402 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1102.13ms. Allocated memory is still 119.5MB. Free memory was 81.8MB in the beginning and 80.6MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:49:07,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90ms. Allocated memory is still 86.0MB. Free memory was 40.8MB in the beginning and 40.7MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1102.13ms. Allocated memory is still 119.5MB. Free memory was 81.8MB in the beginning and 80.6MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/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 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf --- 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 20:49:09,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:49:09,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:49:10,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:49:10,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:49:10,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:49:10,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:49:10,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:49:10,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:49:10,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:49:10,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:49:10,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:49:10,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:49:10,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:49:10,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:49:10,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:49:10,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:49:10,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:49:10,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:49:10,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:49:10,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:49:10,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:49:10,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:49:10,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:49:10,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:49:10,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:49:10,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:49:10,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:49:10,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:49:10,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:49:10,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:49:10,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:49:10,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:49:10,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:49:10,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:49:10,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:49:10,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:49:10,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:49:10,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:49:10,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:49:10,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:49:10,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-02 20:49:10,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:49:10,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:49:10,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:49:10,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:49:10,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:49:10,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:49:10,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:49:10,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:49:10,208 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:49:10,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:49:10,210 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:49:10,210 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:49:10,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:49:10,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:49:10,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:49:10,212 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:49:10,212 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:49:10,212 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:49:10,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:49:10,213 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:49:10,213 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:49:10,213 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:49:10,213 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:49:10,214 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:49:10,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:49:10,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:49:10,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:49:10,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:49:10,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:49:10,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:49:10,216 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:49:10,216 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:49:10,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:49:10,217 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf [2022-11-02 20:49:10,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:49:10,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:49:10,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:49:10,800 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:49:10,801 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:49:10,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2022-11-02 20:49:10,893 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/data/2a28913a2/1dc2451d77c54f85bce679f80c172e5b/FLAG008e82399 [2022-11-02 20:49:11,732 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:49:11,736 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2022-11-02 20:49:11,766 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/data/2a28913a2/1dc2451d77c54f85bce679f80c172e5b/FLAG008e82399 [2022-11-02 20:49:11,823 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/data/2a28913a2/1dc2451d77c54f85bce679f80c172e5b [2022-11-02 20:49:11,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:49:11,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:49:11,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:49:11,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:49:11,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:49:11,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:49:11" (1/1) ... [2022-11-02 20:49:11,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b90d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:11, skipping insertion in model container [2022-11-02 20:49:11,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:49:11" (1/1) ... [2022-11-02 20:49:11,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:49:11,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:49:12,782 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2022-11-02 20:49:12,794 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2022-11-02 20:49:12,942 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2022-11-02 20:49:12,943 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2022-11-02 20:49:12,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:49:12,980 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 20:49:12,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:49:13,024 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2022-11-02 20:49:13,027 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2022-11-02 20:49:13,117 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2022-11-02 20:49:13,118 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2022-11-02 20:49:13,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:49:13,153 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:49:13,190 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2022-11-02 20:49:13,193 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2022-11-02 20:49:13,249 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2022-11-02 20:49:13,251 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_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2022-11-02 20:49:13,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:49:13,362 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:49:13,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:13 WrapperNode [2022-11-02 20:49:13,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:49:13,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:49:13,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:49:13,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:49:13,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:13" (1/1) ... [2022-11-02 20:49:13,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:13" (1/1) ... [2022-11-02 20:49:13,502 INFO L138 Inliner]: procedures = 285, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1204 [2022-11-02 20:49:13,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:49:13,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:49:13,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:49:13,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:49:13,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:13" (1/1) ... [2022-11-02 20:49:13,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:13" (1/1) ... [2022-11-02 20:49:13,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:13" (1/1) ... [2022-11-02 20:49:13,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:13" (1/1) ... [2022-11-02 20:49:13,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:13" (1/1) ... [2022-11-02 20:49:13,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:13" (1/1) ... [2022-11-02 20:49:13,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:13" (1/1) ... [2022-11-02 20:49:13,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:13" (1/1) ... [2022-11-02 20:49:13,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:49:13,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:49:13,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:49:13,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:49:13,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:13" (1/1) ... [2022-11-02 20:49:13,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:49:13,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:49:13,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:49:13,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:49:13,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-02 20:49:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 20:49:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:49:13,740 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-02 20:49:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:49:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:49:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 20:49:13,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:49:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-02 20:49:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-02 20:49:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:49:13,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:49:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:49:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:49:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-02 20:49:13,743 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-02 20:49:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:49:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-02 20:49:13,744 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-02 20:49:13,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:49:13,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:49:14,173 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:49:14,176 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:49:21,235 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:49:21,262 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:49:21,262 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-11-02 20:49:21,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:49:21 BoogieIcfgContainer [2022-11-02 20:49:21,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:49:21,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:49:21,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:49:21,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:49:21,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:49:11" (1/3) ... [2022-11-02 20:49:21,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1199d11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:49:21, skipping insertion in model container [2022-11-02 20:49:21,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:13" (2/3) ... [2022-11-02 20:49:21,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1199d11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:49:21, skipping insertion in model container [2022-11-02 20:49:21,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:49:21" (3/3) ... [2022-11-02 20:49:21,282 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-2.i [2022-11-02 20:49:21,305 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:49:21,306 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2022-11-02 20:49:21,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:49:21,420 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;@65ebc9e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:49:21,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2022-11-02 20:49:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 1280 states, 626 states have (on average 2.2444089456869007) internal successors, (1405), 1260 states have internal predecessors, (1405), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:49:21,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:49:21,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:21,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:49:21,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:49:21,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:21,446 INFO L85 PathProgramCache]: Analyzing trace with hash 77521, now seen corresponding path program 1 times [2022-11-02 20:49:21,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:21,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594664105] [2022-11-02 20:49:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:21,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:21,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:21,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:21,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:49:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:21,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:49:21,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:21,803 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 20:49:21,833 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 20:49:21,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:49:21,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:21,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594664105] [2022-11-02 20:49:21,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594664105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:21,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:21,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:49:21,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895540022] [2022-11-02 20:49:21,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:21,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:49:21,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:21,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:49:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:49:21,933 INFO L87 Difference]: Start difference. First operand has 1280 states, 626 states have (on average 2.2444089456869007) internal successors, (1405), 1260 states have internal predecessors, (1405), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) 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 20:49:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:25,623 INFO L93 Difference]: Finished difference Result 1537 states and 1627 transitions. [2022-11-02 20:49:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:49:25,626 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 20:49:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:25,653 INFO L225 Difference]: With dead ends: 1537 [2022-11-02 20:49:25,653 INFO L226 Difference]: Without dead ends: 1535 [2022-11-02 20:49:25,655 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 20:49:25,660 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 906 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:25,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1258 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-02 20:49:25,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2022-11-02 20:49:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1300. [2022-11-02 20:49:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 660 states have (on average 2.106060606060606) internal successors, (1390), 1281 states have internal predecessors, (1390), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-02 20:49:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1420 transitions. [2022-11-02 20:49:25,797 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1420 transitions. Word has length 3 [2022-11-02 20:49:25,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:25,798 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 1420 transitions. [2022-11-02 20:49:25,798 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 20:49:25,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1420 transitions. [2022-11-02 20:49:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:49:25,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:25,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:49:25,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:26,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:26,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:49:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:26,015 INFO L85 PathProgramCache]: Analyzing trace with hash 77522, now seen corresponding path program 1 times [2022-11-02 20:49:26,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:26,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196343792] [2022-11-02 20:49:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:26,016 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:26,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:26,020 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:26,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:49:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:26,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:49:26,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:26,229 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 20:49:26,253 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 20:49:26,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:49:26,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:26,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196343792] [2022-11-02 20:49:26,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196343792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:26,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:26,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:49:26,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202063266] [2022-11-02 20:49:26,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:26,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:49:26,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:26,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:49:26,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:49:26,260 INFO L87 Difference]: Start difference. First operand 1300 states and 1420 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 20:49:31,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:31,535 INFO L93 Difference]: Finished difference Result 1891 states and 2058 transitions. [2022-11-02 20:49:31,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:49:31,537 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 20:49:31,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:31,544 INFO L225 Difference]: With dead ends: 1891 [2022-11-02 20:49:31,545 INFO L226 Difference]: Without dead ends: 1891 [2022-11-02 20:49:31,545 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 20:49:31,547 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 624 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:31,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1758 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-02 20:49:31,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2022-11-02 20:49:31,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1504. [2022-11-02 20:49:31,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 863 states have (on average 2.0880648899188876) internal successors, (1802), 1483 states have internal predecessors, (1802), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-02 20:49:31,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 1836 transitions. [2022-11-02 20:49:31,615 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 1836 transitions. Word has length 3 [2022-11-02 20:49:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:31,615 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 1836 transitions. [2022-11-02 20:49:31,616 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 20:49:31,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 1836 transitions. [2022-11-02 20:49:31,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:49:31,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:31,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:31,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:31,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:31,831 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:49:31,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:31,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1111693489, now seen corresponding path program 1 times [2022-11-02 20:49:31,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:31,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330113033] [2022-11-02 20:49:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:31,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:31,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:31,838 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:31,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:49:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:32,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:49:32,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:32,117 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 20:49:32,127 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 20:49:32,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:49:32,235 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 20:49:32,260 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:49:32,261 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 20:49:32,304 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 20:49:32,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:49:32,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:32,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330113033] [2022-11-02 20:49:32,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330113033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:32,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:32,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:49:32,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130537620] [2022-11-02 20:49:32,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:32,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:49:32,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:32,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:49:32,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:49:32,311 INFO L87 Difference]: Start difference. First operand 1504 states and 1836 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 20:49:39,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:39,461 INFO L93 Difference]: Finished difference Result 2569 states and 2979 transitions. [2022-11-02 20:49:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:49:39,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 20:49:39,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:39,482 INFO L225 Difference]: With dead ends: 2569 [2022-11-02 20:49:39,482 INFO L226 Difference]: Without dead ends: 2569 [2022-11-02 20:49:39,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 20:49:39,488 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 2002 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:39,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2008 Valid, 1477 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-02 20:49:39,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2022-11-02 20:49:39,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1649. [2022-11-02 20:49:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1008 states have (on average 2.068452380952381) internal successors, (2085), 1628 states have internal predecessors, (2085), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-02 20:49:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2119 transitions. [2022-11-02 20:49:39,540 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2119 transitions. Word has length 8 [2022-11-02 20:49:39,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:39,541 INFO L495 AbstractCegarLoop]: Abstraction has 1649 states and 2119 transitions. [2022-11-02 20:49:39,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 20:49:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2119 transitions. [2022-11-02 20:49:39,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:49:39,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:39,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:39,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:39,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:39,758 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:49:39,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:39,758 INFO L85 PathProgramCache]: Analyzing trace with hash -102759776, now seen corresponding path program 1 times [2022-11-02 20:49:39,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:39,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336126253] [2022-11-02 20:49:39,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:39,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:39,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:39,763 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:39,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:49:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:39,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:49:39,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:40,008 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 20:49:40,045 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 20:49:40,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:49:40,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:40,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336126253] [2022-11-02 20:49:40,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336126253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:40,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:40,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:49:40,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577938683] [2022-11-02 20:49:40,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:40,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:49:40,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:40,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:49:40,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:49:40,054 INFO L87 Difference]: Start difference. First operand 1649 states and 2119 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:45,898 INFO L93 Difference]: Finished difference Result 2811 states and 3512 transitions. [2022-11-02 20:49:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:49:45,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:49:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:45,912 INFO L225 Difference]: With dead ends: 2811 [2022-11-02 20:49:45,912 INFO L226 Difference]: Without dead ends: 2811 [2022-11-02 20:49:45,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 20:49:45,923 INFO L413 NwaCegarLoop]: 1321 mSDtfsCounter, 2333 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2339 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:45,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2339 Valid, 2579 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-02 20:49:45,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2022-11-02 20:49:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 1604. [2022-11-02 20:49:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1008 states have (on average 2.009920634920635) internal successors, (2026), 1583 states have internal predecessors, (2026), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-02 20:49:45,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2060 transitions. [2022-11-02 20:49:45,982 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2060 transitions. Word has length 9 [2022-11-02 20:49:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:45,983 INFO L495 AbstractCegarLoop]: Abstraction has 1604 states and 2060 transitions. [2022-11-02 20:49:45,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2060 transitions. [2022-11-02 20:49:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:49:45,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:45,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:46,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:46,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:46,198 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:49:46,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:46,199 INFO L85 PathProgramCache]: Analyzing trace with hash -102759775, now seen corresponding path program 1 times [2022-11-02 20:49:46,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:46,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907766874] [2022-11-02 20:49:46,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:46,199 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:46,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:46,201 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:46,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:49:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:46,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:49:46,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:46,417 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 20:49:46,471 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 20:49:46,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:49:46,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:46,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907766874] [2022-11-02 20:49:46,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907766874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:46,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:46,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:49:46,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10511511] [2022-11-02 20:49:46,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:46,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:49:46,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:46,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:49:46,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:49:46,475 INFO L87 Difference]: Start difference. First operand 1604 states and 2060 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:53,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:53,091 INFO L93 Difference]: Finished difference Result 2440 states and 3105 transitions. [2022-11-02 20:49:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:49:53,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:49:53,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:53,100 INFO L225 Difference]: With dead ends: 2440 [2022-11-02 20:49:53,100 INFO L226 Difference]: Without dead ends: 2440 [2022-11-02 20:49:53,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 20:49:53,102 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 1581 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:53,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 2720 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-02 20:49:53,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2022-11-02 20:49:53,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 1594. [2022-11-02 20:49:53,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1008 states have (on average 1.9861111111111112) internal successors, (2002), 1573 states have internal predecessors, (2002), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-02 20:49:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2036 transitions. [2022-11-02 20:49:53,149 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2036 transitions. Word has length 9 [2022-11-02 20:49:53,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:53,149 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2036 transitions. [2022-11-02 20:49:53,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:53,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2036 transitions. [2022-11-02 20:49:53,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:49:53,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:53,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:53,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:53,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:53,365 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr516ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:49:53,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash -856298529, now seen corresponding path program 1 times [2022-11-02 20:49:53,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:53,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845467606] [2022-11-02 20:49:53,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:53,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:53,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:53,369 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:53,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:49:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:53,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:49:53,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:53,698 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 20:49:53,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:49:53,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:53,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845467606] [2022-11-02 20:49:53,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845467606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:53,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:53,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:49:53,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665966571] [2022-11-02 20:49:53,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:53,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:49:53,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:53,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:49:53,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:49:53,702 INFO L87 Difference]: Start difference. First operand 1594 states and 2036 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:55,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:55,119 INFO L93 Difference]: Finished difference Result 2264 states and 2809 transitions. [2022-11-02 20:49:55,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:49:55,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:49:55,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:55,128 INFO L225 Difference]: With dead ends: 2264 [2022-11-02 20:49:55,128 INFO L226 Difference]: Without dead ends: 2264 [2022-11-02 20:49:55,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 20:49:55,129 INFO L413 NwaCegarLoop]: 1454 mSDtfsCounter, 748 mSDsluCounter, 2419 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 3873 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:55,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 3873 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:49:55,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2022-11-02 20:49:55,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1852. [2022-11-02 20:49:55,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1263 states have (on average 1.990498812351544) internal successors, (2514), 1828 states have internal predecessors, (2514), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-02 20:49:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2554 transitions. [2022-11-02 20:49:55,190 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2554 transitions. Word has length 11 [2022-11-02 20:49:55,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:55,191 INFO L495 AbstractCegarLoop]: Abstraction has 1852 states and 2554 transitions. [2022-11-02 20:49:55,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:55,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2554 transitions. [2022-11-02 20:49:55,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:49:55,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:55,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:55,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:55,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:55,406 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:49:55,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:55,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2126591358, now seen corresponding path program 1 times [2022-11-02 20:49:55,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:55,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599102127] [2022-11-02 20:49:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:55,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:55,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:55,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:55,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:49:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:55,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:49:55,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:55,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:49:55,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:49:55,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:49:55,694 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 30 treesize of output 39 [2022-11-02 20:49:55,764 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:49:55,765 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 70 treesize of output 26 [2022-11-02 20:49:55,789 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 20:49:55,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:49:55,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:55,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599102127] [2022-11-02 20:49:55,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599102127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:55,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:55,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:49:55,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870655300] [2022-11-02 20:49:55,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:55,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:49:55,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:55,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:49:55,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:49:55,793 INFO L87 Difference]: Start difference. First operand 1852 states and 2554 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:58,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:58,434 INFO L93 Difference]: Finished difference Result 2000 states and 2409 transitions. [2022-11-02 20:49:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:49:58,436 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 20:49:58,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:58,441 INFO L225 Difference]: With dead ends: 2000 [2022-11-02 20:49:58,441 INFO L226 Difference]: Without dead ends: 2000 [2022-11-02 20:49:58,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 20:49:58,442 INFO L413 NwaCegarLoop]: 1391 mSDtfsCounter, 501 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 3873 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:49:58,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 3873 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 20:49:58,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2022-11-02 20:49:58,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1494. [2022-11-02 20:49:58,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 907 states have (on average 1.9757442116868797) internal successors, (1792), 1472 states have internal predecessors, (1792), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-02 20:49:58,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1828 transitions. [2022-11-02 20:49:58,477 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1828 transitions. Word has length 14 [2022-11-02 20:49:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:58,478 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 1828 transitions. [2022-11-02 20:49:58,478 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:58,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1828 transitions. [2022-11-02 20:49:58,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:49:58,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:58,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:58,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:58,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:58,696 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:49:58,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:58,697 INFO L85 PathProgramCache]: Analyzing trace with hash 769788685, now seen corresponding path program 1 times [2022-11-02 20:49:58,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:58,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266167167] [2022-11-02 20:49:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:58,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:58,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:58,699 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:58,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:49:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:58,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:49:58,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:58,973 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 20:49:58,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:49:58,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:58,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266167167] [2022-11-02 20:49:58,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266167167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:58,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:58,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:49:58,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255169216] [2022-11-02 20:49:58,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:58,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:49:58,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:49:58,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:49:58,977 INFO L87 Difference]: Start difference. First operand 1494 states and 1828 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 20:49:59,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:59,014 INFO L93 Difference]: Finished difference Result 1434 states and 1742 transitions. [2022-11-02 20:49:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:49:59,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 20:49:59,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:59,020 INFO L225 Difference]: With dead ends: 1434 [2022-11-02 20:49:59,021 INFO L226 Difference]: Without dead ends: 1434 [2022-11-02 20:49:59,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 20:49:59,022 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 1165 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1308 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 20:49:59,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1308 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:49:59,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2022-11-02 20:49:59,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1434. [2022-11-02 20:49:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 871 states have (on average 1.9586681974741675) internal successors, (1706), 1412 states have internal predecessors, (1706), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-02 20:49:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1742 transitions. [2022-11-02 20:49:59,053 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1742 transitions. Word has length 19 [2022-11-02 20:49:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:59,053 INFO L495 AbstractCegarLoop]: Abstraction has 1434 states and 1742 transitions. [2022-11-02 20:49:59,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 20:49:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1742 transitions. [2022-11-02 20:49:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 20:49:59,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:59,055 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] [2022-11-02 20:49:59,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:59,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:59,271 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:49:59,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:59,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1032548102, now seen corresponding path program 1 times [2022-11-02 20:49:59,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:59,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147414575] [2022-11-02 20:49:59,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:59,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:59,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:59,273 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:59,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:49:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:59,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:49:59,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:49:59,582 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 20:49:59,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:49:59,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:49:59,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147414575] [2022-11-02 20:49:59,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147414575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:59,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:59,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:49:59,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378117454] [2022-11-02 20:49:59,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:59,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:49:59,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:49:59,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:49:59,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:49:59,586 INFO L87 Difference]: Start difference. First operand 1434 states and 1742 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 20:49:59,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:49:59,705 INFO L93 Difference]: Finished difference Result 1406 states and 1686 transitions. [2022-11-02 20:49:59,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:49:59,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-02 20:49:59,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:49:59,712 INFO L225 Difference]: With dead ends: 1406 [2022-11-02 20:49:59,712 INFO L226 Difference]: Without dead ends: 1406 [2022-11-02 20:49:59,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 20:49:59,715 INFO L413 NwaCegarLoop]: 1194 mSDtfsCounter, 1136 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 2450 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 20:49:59,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 2450 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:49:59,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2022-11-02 20:49:59,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1404. [2022-11-02 20:49:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 855 states have (on average 1.9274853801169591) internal successors, (1648), 1382 states have internal predecessors, (1648), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-02 20:49:59,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1684 transitions. [2022-11-02 20:49:59,746 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1684 transitions. Word has length 21 [2022-11-02 20:49:59,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:49:59,747 INFO L495 AbstractCegarLoop]: Abstraction has 1404 states and 1684 transitions. [2022-11-02 20:49:59,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 20:49:59,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1684 transitions. [2022-11-02 20:49:59,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 20:49:59,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:49:59,748 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] [2022-11-02 20:49:59,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:49:59,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:49:59,962 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:49:59,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:59,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308372, now seen corresponding path program 1 times [2022-11-02 20:49:59,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:49:59,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506804694] [2022-11-02 20:49:59,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:59,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:49:59,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:49:59,973 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:49:59,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:50:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:00,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:50:00,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:00,269 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 20:50:00,398 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 20:50:00,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:50:00,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:00,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506804694] [2022-11-02 20:50:00,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506804694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:00,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:00,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:50:00,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253373406] [2022-11-02 20:50:00,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:00,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:50:00,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:00,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:50:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:50:00,401 INFO L87 Difference]: Start difference. First operand 1404 states and 1684 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:07,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:07,096 INFO L93 Difference]: Finished difference Result 2572 states and 3080 transitions. [2022-11-02 20:50:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:50:07,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-02 20:50:07,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:07,104 INFO L225 Difference]: With dead ends: 2572 [2022-11-02 20:50:07,105 INFO L226 Difference]: Without dead ends: 2572 [2022-11-02 20:50:07,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:50:07,106 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 2421 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2424 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:07,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2424 Valid, 2737 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-02 20:50:07,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2022-11-02 20:50:07,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1400. [2022-11-02 20:50:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 855 states have (on average 1.9181286549707601) internal successors, (1640), 1378 states have internal predecessors, (1640), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-02 20:50:07,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1676 transitions. [2022-11-02 20:50:07,138 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1676 transitions. Word has length 35 [2022-11-02 20:50:07,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:07,138 INFO L495 AbstractCegarLoop]: Abstraction has 1400 states and 1676 transitions. [2022-11-02 20:50:07,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:07,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1676 transitions. [2022-11-02 20:50:07,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 20:50:07,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:07,140 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] [2022-11-02 20:50:07,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:07,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:07,357 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:50:07,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:07,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308373, now seen corresponding path program 1 times [2022-11-02 20:50:07,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:07,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222146893] [2022-11-02 20:50:07,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:07,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:07,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:07,360 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:07,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:50:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:07,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:50:07,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:07,705 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 20:50:08,043 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 20:50:08,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:50:08,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:08,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222146893] [2022-11-02 20:50:08,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222146893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:08,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:08,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:50:08,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972991327] [2022-11-02 20:50:08,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:08,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:50:08,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:08,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:50:08,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:50:08,045 INFO L87 Difference]: Start difference. First operand 1400 states and 1676 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:15,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:15,946 INFO L93 Difference]: Finished difference Result 2214 states and 2659 transitions. [2022-11-02 20:50:15,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:50:15,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-02 20:50:15,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:15,955 INFO L225 Difference]: With dead ends: 2214 [2022-11-02 20:50:15,956 INFO L226 Difference]: Without dead ends: 2214 [2022-11-02 20:50:15,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:50:15,957 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 2194 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:15,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2194 Valid, 3317 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-02 20:50:15,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2022-11-02 20:50:15,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 1396. [2022-11-02 20:50:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 855 states have (on average 1.9087719298245613) internal successors, (1632), 1374 states have internal predecessors, (1632), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-02 20:50:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1668 transitions. [2022-11-02 20:50:15,992 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1668 transitions. Word has length 35 [2022-11-02 20:50:15,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:15,993 INFO L495 AbstractCegarLoop]: Abstraction has 1396 states and 1668 transitions. [2022-11-02 20:50:15,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:15,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1668 transitions. [2022-11-02 20:50:15,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-02 20:50:15,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:15,995 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 20:50:16,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:16,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:16,211 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:50:16,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:16,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2063645645, now seen corresponding path program 1 times [2022-11-02 20:50:16,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:16,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885474347] [2022-11-02 20:50:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:16,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:16,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:16,214 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:16,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:50:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:16,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:50:16,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:16,666 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 20:50:16,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:50:16,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:16,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885474347] [2022-11-02 20:50:16,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885474347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:16,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:16,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:50:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901576972] [2022-11-02 20:50:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:16,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:50:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:50:16,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:50:16,670 INFO L87 Difference]: Start difference. First operand 1396 states and 1668 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:16,756 INFO L93 Difference]: Finished difference Result 1384 states and 1648 transitions. [2022-11-02 20:50:16,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:50:16,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 20:50:16,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:16,762 INFO L225 Difference]: With dead ends: 1384 [2022-11-02 20:50:16,762 INFO L226 Difference]: Without dead ends: 1384 [2022-11-02 20:50:16,763 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 20:50:16,764 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 1112 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 2428 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 20:50:16,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 2428 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:50:16,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-11-02 20:50:16,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-11-02 20:50:16,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 843 states have (on average 1.9122182680901543) internal successors, (1612), 1362 states have internal predecessors, (1612), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-02 20:50:16,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1648 transitions. [2022-11-02 20:50:16,798 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1648 transitions. Word has length 54 [2022-11-02 20:50:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:16,798 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 1648 transitions. [2022-11-02 20:50:16,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:16,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1648 transitions. [2022-11-02 20:50:16,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:50:16,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:16,801 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 20:50:16,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:17,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:17,016 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:50:17,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:17,017 INFO L85 PathProgramCache]: Analyzing trace with hash -202859289, now seen corresponding path program 1 times [2022-11-02 20:50:17,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:17,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598408577] [2022-11-02 20:50:17,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:17,018 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:17,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:17,021 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:17,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:50:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:17,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:50:17,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:17,654 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:50:17,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-02 20:50:17,749 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:50:17,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-02 20:50:18,357 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 20:50:18,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:50:18,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:18,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598408577] [2022-11-02 20:50:18,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598408577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:18,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:18,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:50:18,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490312727] [2022-11-02 20:50:18,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:18,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:50:18,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:18,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:50:18,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:50:18,360 INFO L87 Difference]: Start difference. First operand 1384 states and 1648 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:18,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:18,674 INFO L93 Difference]: Finished difference Result 1394 states and 1661 transitions. [2022-11-02 20:50:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:50:18,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 20:50:18,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:18,681 INFO L225 Difference]: With dead ends: 1394 [2022-11-02 20:50:18,681 INFO L226 Difference]: Without dead ends: 1394 [2022-11-02 20:50:18,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:50:18,682 INFO L413 NwaCegarLoop]: 1170 mSDtfsCounter, 116 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 556 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:18,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 2457 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 556 Unchecked, 0.3s Time] [2022-11-02 20:50:18,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2022-11-02 20:50:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1389. [2022-11-02 20:50:18,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 847 states have (on average 1.9090909090909092) internal successors, (1617), 1366 states have internal predecessors, (1617), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-02 20:50:18,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1655 transitions. [2022-11-02 20:50:18,711 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1655 transitions. Word has length 62 [2022-11-02 20:50:18,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:18,712 INFO L495 AbstractCegarLoop]: Abstraction has 1389 states and 1655 transitions. [2022-11-02 20:50:18,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:18,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1655 transitions. [2022-11-02 20:50:18,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:50:18,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:18,713 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 20:50:18,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:18,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:18,935 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:50:18,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:18,935 INFO L85 PathProgramCache]: Analyzing trace with hash -202859288, now seen corresponding path program 1 times [2022-11-02 20:50:18,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:18,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006638570] [2022-11-02 20:50:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:18,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:18,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:18,937 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:18,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:50:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:19,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:50:19,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:19,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:50:19,565 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 20:50:19,668 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:50:19,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 20:50:20,567 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 20:50:20,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:50:20,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:20,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006638570] [2022-11-02 20:50:20,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006638570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:20,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:20,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:50:20,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518431620] [2022-11-02 20:50:20,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:20,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:50:20,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:20,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:50:20,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:50:20,570 INFO L87 Difference]: Start difference. First operand 1389 states and 1655 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:25,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:25,619 INFO L93 Difference]: Finished difference Result 1390 states and 1655 transitions. [2022-11-02 20:50:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:50:25,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 20:50:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:25,624 INFO L225 Difference]: With dead ends: 1390 [2022-11-02 20:50:25,625 INFO L226 Difference]: Without dead ends: 1390 [2022-11-02 20:50:25,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:50:25,626 INFO L413 NwaCegarLoop]: 1170 mSDtfsCounter, 111 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:25,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 2402 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-02 20:50:25,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2022-11-02 20:50:25,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1389. [2022-11-02 20:50:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 847 states have (on average 1.9079102715466352) internal successors, (1616), 1366 states have internal predecessors, (1616), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-02 20:50:25,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1654 transitions. [2022-11-02 20:50:25,654 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1654 transitions. Word has length 62 [2022-11-02 20:50:25,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:25,655 INFO L495 AbstractCegarLoop]: Abstraction has 1389 states and 1654 transitions. [2022-11-02 20:50:25,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1654 transitions. [2022-11-02 20:50:25,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:50:25,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:25,657 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] [2022-11-02 20:50:25,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-02 20:50:25,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:25,874 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:50:25,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:25,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1136013504, now seen corresponding path program 1 times [2022-11-02 20:50:25,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:25,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25902956] [2022-11-02 20:50:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:25,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:25,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:25,876 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:25,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:50:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:26,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:50:26,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:26,358 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 20:50:26,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:50:26,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:26,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25902956] [2022-11-02 20:50:26,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25902956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:26,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:26,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:50:26,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748234226] [2022-11-02 20:50:26,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:26,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:50:26,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:26,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:50:26,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:50:26,360 INFO L87 Difference]: Start difference. First operand 1389 states and 1654 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 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 20:50:26,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:26,532 INFO L93 Difference]: Finished difference Result 1403 states and 1668 transitions. [2022-11-02 20:50:26,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:50:26,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 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 68 [2022-11-02 20:50:26,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:26,537 INFO L225 Difference]: With dead ends: 1403 [2022-11-02 20:50:26,537 INFO L226 Difference]: Without dead ends: 1403 [2022-11-02 20:50:26,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:50:26,538 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 19 mSDsluCounter, 4732 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5918 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:26,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5918 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:50:26,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2022-11-02 20:50:26,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1401. [2022-11-02 20:50:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 856 states have (on average 1.9018691588785046) internal successors, (1628), 1376 states have internal predecessors, (1628), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-02 20:50:26,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1668 transitions. [2022-11-02 20:50:26,578 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1668 transitions. Word has length 68 [2022-11-02 20:50:26,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:26,579 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 1668 transitions. [2022-11-02 20:50:26,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 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 20:50:26,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1668 transitions. [2022-11-02 20:50:26,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:50:26,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:26,583 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] [2022-11-02 20:50:26,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:26,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:26,803 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:50:26,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1078181117, now seen corresponding path program 1 times [2022-11-02 20:50:26,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:26,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754719604] [2022-11-02 20:50:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:26,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:26,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:26,806 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:26,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:50:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:27,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:50:27,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:27,511 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 20:50:27,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:50:27,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:27,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754719604] [2022-11-02 20:50:27,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754719604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:27,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:27,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:50:27,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019483696] [2022-11-02 20:50:27,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:27,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:50:27,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:27,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:50:27,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:50:27,515 INFO L87 Difference]: Start difference. First operand 1401 states and 1668 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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 20:50:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:27,836 INFO L93 Difference]: Finished difference Result 1407 states and 1675 transitions. [2022-11-02 20:50:27,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:50:27,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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 68 [2022-11-02 20:50:27,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:27,841 INFO L225 Difference]: With dead ends: 1407 [2022-11-02 20:50:27,841 INFO L226 Difference]: Without dead ends: 1407 [2022-11-02 20:50:27,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:50:27,842 INFO L413 NwaCegarLoop]: 1185 mSDtfsCounter, 23 mSDsluCounter, 4590 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5775 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:27,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 5775 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:50:27,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2022-11-02 20:50:27,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1404. [2022-11-02 20:50:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 858 states have (on average 1.8997668997668997) internal successors, (1630), 1378 states have internal predecessors, (1630), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2022-11-02 20:50:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1671 transitions. [2022-11-02 20:50:27,883 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1671 transitions. Word has length 68 [2022-11-02 20:50:27,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:27,883 INFO L495 AbstractCegarLoop]: Abstraction has 1404 states and 1671 transitions. [2022-11-02 20:50:27,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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 20:50:27,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1671 transitions. [2022-11-02 20:50:27,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 20:50:27,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:27,885 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] [2022-11-02 20:50:27,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-02 20:50:28,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:28,104 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:50:28,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:28,105 INFO L85 PathProgramCache]: Analyzing trace with hash 396897840, now seen corresponding path program 1 times [2022-11-02 20:50:28,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:28,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347271696] [2022-11-02 20:50:28,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:28,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:28,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:28,108 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:28,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:50:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:28,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:50:28,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:28,764 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 20:50:29,056 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 20:50:29,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 20:50:29,075 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 20:50:29,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:50:29,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:29,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347271696] [2022-11-02 20:50:29,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347271696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:29,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:29,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:50:29,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102310936] [2022-11-02 20:50:29,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:29,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:50:29,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:29,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:50:29,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:50:29,078 INFO L87 Difference]: Start difference. First operand 1404 states and 1671 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:50:36,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:36,026 INFO L93 Difference]: Finished difference Result 2560 states and 3059 transitions. [2022-11-02 20:50:36,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:50:36,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2022-11-02 20:50:36,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:36,035 INFO L225 Difference]: With dead ends: 2560 [2022-11-02 20:50:36,035 INFO L226 Difference]: Without dead ends: 2560 [2022-11-02 20:50:36,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:50:36,036 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 1622 mSDsluCounter, 2883 mSDsCounter, 0 mSdLazyCounter, 2727 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 3997 SdHoareTripleChecker+Invalid, 3875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1127 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:36,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1628 Valid, 3997 Invalid, 3875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2727 Invalid, 0 Unknown, 1127 Unchecked, 6.8s Time] [2022-11-02 20:50:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2022-11-02 20:50:36,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1403. [2022-11-02 20:50:36,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 858 states have (on average 1.8986013986013985) internal successors, (1629), 1377 states have internal predecessors, (1629), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2022-11-02 20:50:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1670 transitions. [2022-11-02 20:50:36,070 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1670 transitions. Word has length 73 [2022-11-02 20:50:36,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:36,071 INFO L495 AbstractCegarLoop]: Abstraction has 1403 states and 1670 transitions. [2022-11-02 20:50:36,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:50:36,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1670 transitions. [2022-11-02 20:50:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 20:50:36,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:36,073 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] [2022-11-02 20:50:36,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:36,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:36,293 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:50:36,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:36,294 INFO L85 PathProgramCache]: Analyzing trace with hash 396897841, now seen corresponding path program 1 times [2022-11-02 20:50:36,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:36,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800368129] [2022-11-02 20:50:36,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:36,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:36,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:36,296 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:36,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:50:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:36,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:50:36,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:36,945 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 20:50:36,954 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 20:50:37,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:50:37,631 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 20:50:37,646 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:50:37,646 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 20:50:37,683 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 20:50:37,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:50:37,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:37,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800368129] [2022-11-02 20:50:37,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800368129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:37,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:37,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:50:37,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061805335] [2022-11-02 20:50:37,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:37,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:50:37,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:37,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:50:37,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:50:37,686 INFO L87 Difference]: Start difference. First operand 1403 states and 1670 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:50:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:50,702 INFO L93 Difference]: Finished difference Result 2630 states and 3192 transitions. [2022-11-02 20:50:50,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:50:50,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2022-11-02 20:50:50,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:50,710 INFO L225 Difference]: With dead ends: 2630 [2022-11-02 20:50:50,711 INFO L226 Difference]: Without dead ends: 2630 [2022-11-02 20:50:50,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:50:50,712 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 1836 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 4881 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1842 SdHoareTripleChecker+Valid, 4162 SdHoareTripleChecker+Invalid, 6220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 4881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1309 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:50,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1842 Valid, 4162 Invalid, 6220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 4881 Invalid, 0 Unknown, 1309 Unchecked, 12.8s Time] [2022-11-02 20:50:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2022-11-02 20:50:50,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 1397. [2022-11-02 20:50:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 860 states have (on average 1.8872093023255814) internal successors, (1623), 1371 states have internal predecessors, (1623), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2022-11-02 20:50:50,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1664 transitions. [2022-11-02 20:50:50,750 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1664 transitions. Word has length 73 [2022-11-02 20:50:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:50,750 INFO L495 AbstractCegarLoop]: Abstraction has 1397 states and 1664 transitions. [2022-11-02 20:50:50,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:50:50,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1664 transitions. [2022-11-02 20:50:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:50:50,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:50,751 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, 1, 1, 1, 1] [2022-11-02 20:50:50,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:50,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:50,966 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:50:50,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:50,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1622258381, now seen corresponding path program 1 times [2022-11-02 20:50:50,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:50,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530785730] [2022-11-02 20:50:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:50,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:50,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:50,969 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:50,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:50:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:51,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:50:51,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:51,442 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 20:50:51,467 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 20:50:51,510 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 20:50:51,561 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 20:50:51,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:50:51,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:51,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530785730] [2022-11-02 20:50:51,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530785730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:51,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:51,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:50:51,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417093490] [2022-11-02 20:50:51,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:51,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:50:51,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:51,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:50:51,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:50:51,564 INFO L87 Difference]: Start difference. First operand 1397 states and 1664 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:50:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:50:58,549 INFO L93 Difference]: Finished difference Result 1405 states and 1672 transitions. [2022-11-02 20:50:58,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:50:58,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2022-11-02 20:50:58,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:50:58,566 INFO L225 Difference]: With dead ends: 1405 [2022-11-02 20:50:58,566 INFO L226 Difference]: Without dead ends: 1405 [2022-11-02 20:50:58,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:50:58,567 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 23 mSDsluCounter, 3760 mSDsCounter, 0 mSdLazyCounter, 3317 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4931 SdHoareTripleChecker+Invalid, 3319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:50:58,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4931 Invalid, 3319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3317 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-02 20:50:58,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2022-11-02 20:50:58,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1404. [2022-11-02 20:50:58,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 866 states have (on average 1.8833718244803694) internal successors, (1631), 1377 states have internal predecessors, (1631), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2022-11-02 20:50:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1672 transitions. [2022-11-02 20:50:58,594 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1672 transitions. Word has length 80 [2022-11-02 20:50:58,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:50:58,595 INFO L495 AbstractCegarLoop]: Abstraction has 1404 states and 1672 transitions. [2022-11-02 20:50:58,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:50:58,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1672 transitions. [2022-11-02 20:50:58,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-02 20:50:58,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:50:58,596 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:58,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:50:58,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:50:58,815 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:50:58,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:58,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1249597809, now seen corresponding path program 1 times [2022-11-02 20:50:58,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:50:58,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730207237] [2022-11-02 20:50:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:58,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:50:58,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:50:58,817 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:50:58,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:50:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:59,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:50:59,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:50:59,257 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 20:50:59,312 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 20:50:59,327 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 20:50:59,392 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 20:50:59,399 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 20:50:59,518 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 20:50:59,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:50:59,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:50:59,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730207237] [2022-11-02 20:50:59,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730207237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:59,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:59,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:50:59,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789804705] [2022-11-02 20:50:59,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:59,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:50:59,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:50:59,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:50:59,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:50:59,522 INFO L87 Difference]: Start difference. First operand 1404 states and 1672 transitions. Second operand has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:51:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:09,058 INFO L93 Difference]: Finished difference Result 1404 states and 1671 transitions. [2022-11-02 20:51:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:51:09,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2022-11-02 20:51:09,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:09,062 INFO L225 Difference]: With dead ends: 1404 [2022-11-02 20:51:09,063 INFO L226 Difference]: Without dead ends: 1404 [2022-11-02 20:51:09,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:51:09,064 INFO L413 NwaCegarLoop]: 1166 mSDtfsCounter, 19 mSDsluCounter, 4783 mSDsCounter, 0 mSdLazyCounter, 3477 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5949 SdHoareTripleChecker+Invalid, 3478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:09,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5949 Invalid, 3478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3477 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-02 20:51:09,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2022-11-02 20:51:09,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1404. [2022-11-02 20:51:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 866 states have (on average 1.882217090069284) internal successors, (1630), 1377 states have internal predecessors, (1630), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2022-11-02 20:51:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1671 transitions. [2022-11-02 20:51:09,099 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1671 transitions. Word has length 81 [2022-11-02 20:51:09,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:09,099 INFO L495 AbstractCegarLoop]: Abstraction has 1404 states and 1671 transitions. [2022-11-02 20:51:09,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:51:09,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1671 transitions. [2022-11-02 20:51:09,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-02 20:51:09,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:09,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:09,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:09,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:09,318 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:51:09,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:09,318 INFO L85 PathProgramCache]: Analyzing trace with hash -63374884, now seen corresponding path program 1 times [2022-11-02 20:51:09,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:09,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608320876] [2022-11-02 20:51:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:09,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:09,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:09,321 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:09,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:51:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:09,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:51:09,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:09,974 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 20:51:09,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:51:09,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:51:09,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608320876] [2022-11-02 20:51:09,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608320876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:51:09,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:51:09,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:51:09,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607470090] [2022-11-02 20:51:09,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:51:09,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:51:09,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:51:09,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:51:09,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:51:09,978 INFO L87 Difference]: Start difference. First operand 1404 states and 1671 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:51:10,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:10,083 INFO L93 Difference]: Finished difference Result 1412 states and 1680 transitions. [2022-11-02 20:51:10,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:51:10,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 88 [2022-11-02 20:51:10,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:10,088 INFO L225 Difference]: With dead ends: 1412 [2022-11-02 20:51:10,088 INFO L226 Difference]: Without dead ends: 1409 [2022-11-02 20:51:10,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:51:10,090 INFO L413 NwaCegarLoop]: 1174 mSDtfsCounter, 13 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:10,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3514 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:51:10,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2022-11-02 20:51:10,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1409. [2022-11-02 20:51:10,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 870 states have (on average 1.8793103448275863) internal successors, (1635), 1382 states have internal predecessors, (1635), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2022-11-02 20:51:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1677 transitions. [2022-11-02 20:51:10,124 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1677 transitions. Word has length 88 [2022-11-02 20:51:10,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:10,126 INFO L495 AbstractCegarLoop]: Abstraction has 1409 states and 1677 transitions. [2022-11-02 20:51:10,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:51:10,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1677 transitions. [2022-11-02 20:51:10,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-02 20:51:10,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:10,128 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:10,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:10,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:10,348 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:51:10,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash -407790698, now seen corresponding path program 1 times [2022-11-02 20:51:10,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:10,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15098817] [2022-11-02 20:51:10,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:10,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:10,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:10,350 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:10,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:51:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:51:10,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:51:10,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:10,894 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 20:51:10,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:11,096 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 20:51:11,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:51:11,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15098817] [2022-11-02 20:51:11,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15098817] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:11,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:51:11,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 20:51:11,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204616881] [2022-11-02 20:51:11,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:11,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:51:11,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:51:11,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:51:11,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:51:11,099 INFO L87 Difference]: Start difference. First operand 1409 states and 1677 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:51:11,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:11,418 INFO L93 Difference]: Finished difference Result 1422 states and 1692 transitions. [2022-11-02 20:51:11,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:51:11,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 89 [2022-11-02 20:51:11,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:11,430 INFO L225 Difference]: With dead ends: 1422 [2022-11-02 20:51:11,431 INFO L226 Difference]: Without dead ends: 1416 [2022-11-02 20:51:11,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:51:11,432 INFO L413 NwaCegarLoop]: 1177 mSDtfsCounter, 44 mSDsluCounter, 3523 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 4700 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:11,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 4700 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:51:11,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2022-11-02 20:51:11,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1413. [2022-11-02 20:51:11,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 874 states have (on average 1.8764302059496567) internal successors, (1640), 1386 states have internal predecessors, (1640), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2022-11-02 20:51:11,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1682 transitions. [2022-11-02 20:51:11,454 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1682 transitions. Word has length 89 [2022-11-02 20:51:11,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:11,454 INFO L495 AbstractCegarLoop]: Abstraction has 1413 states and 1682 transitions. [2022-11-02 20:51:11,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:51:11,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1682 transitions. [2022-11-02 20:51:11,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:51:11,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:11,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:11,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:11,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:11,669 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:51:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:11,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1714460764, now seen corresponding path program 2 times [2022-11-02 20:51:11,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:11,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161265821] [2022-11-02 20:51:11,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:51:11,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:11,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:11,673 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:11,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:51:12,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:51:12,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:51:12,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:51:12,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:12,685 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 20:51:12,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:13,100 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 20:51:13,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:51:13,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161265821] [2022-11-02 20:51:13,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161265821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:13,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:51:13,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:51:13,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672975146] [2022-11-02 20:51:13,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:13,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:51:13,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:51:13,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:51:13,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:51:13,103 INFO L87 Difference]: Start difference. First operand 1413 states and 1682 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:51:14,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:14,292 INFO L93 Difference]: Finished difference Result 1440 states and 1716 transitions. [2022-11-02 20:51:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:51:14,298 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 92 [2022-11-02 20:51:14,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:14,301 INFO L225 Difference]: With dead ends: 1440 [2022-11-02 20:51:14,302 INFO L226 Difference]: Without dead ends: 1434 [2022-11-02 20:51:14,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=343, Invalid=649, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:51:14,303 INFO L413 NwaCegarLoop]: 1183 mSDtfsCounter, 79 mSDsluCounter, 8233 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 9416 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:14,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 9416 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:51:14,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2022-11-02 20:51:14,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1422. [2022-11-02 20:51:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 883 states have (on average 1.870894677236693) internal successors, (1652), 1395 states have internal predecessors, (1652), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2022-11-02 20:51:14,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 1694 transitions. [2022-11-02 20:51:14,326 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 1694 transitions. Word has length 92 [2022-11-02 20:51:14,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:14,326 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 1694 transitions. [2022-11-02 20:51:14,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:51:14,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 1694 transitions. [2022-11-02 20:51:14,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:51:14,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:14,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:14,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:14,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:14,549 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:51:14,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:14,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1774326244, now seen corresponding path program 3 times [2022-11-02 20:51:14,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:14,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067158341] [2022-11-02 20:51:14,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:51:14,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:14,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:14,552 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:14,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:51:15,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 20:51:15,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:51:15,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:51:15,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:16,225 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 20:51:16,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:17,608 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 20:51:17,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:51:17,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067158341] [2022-11-02 20:51:17,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067158341] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:17,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:51:17,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-02 20:51:17,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180954863] [2022-11-02 20:51:17,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:17,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 20:51:17,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:51:17,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 20:51:17,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:51:17,612 INFO L87 Difference]: Start difference. First operand 1422 states and 1694 transitions. Second operand has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:51:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:23,422 INFO L93 Difference]: Finished difference Result 1476 states and 1768 transitions. [2022-11-02 20:51:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-02 20:51:23,423 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2022-11-02 20:51:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:23,426 INFO L225 Difference]: With dead ends: 1476 [2022-11-02 20:51:23,427 INFO L226 Difference]: Without dead ends: 1467 [2022-11-02 20:51:23,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=924, Invalid=1832, Unknown=0, NotChecked=0, Total=2756 [2022-11-02 20:51:23,429 INFO L413 NwaCegarLoop]: 1195 mSDtfsCounter, 183 mSDsluCounter, 20109 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 21304 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:23,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 21304 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:51:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2022-11-02 20:51:23,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1440. [2022-11-02 20:51:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 901 states have (on average 1.8590455049944505) internal successors, (1675), 1413 states have internal predecessors, (1675), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2022-11-02 20:51:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1717 transitions. [2022-11-02 20:51:23,451 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1717 transitions. Word has length 98 [2022-11-02 20:51:23,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:23,452 INFO L495 AbstractCegarLoop]: Abstraction has 1440 states and 1717 transitions. [2022-11-02 20:51:23,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:51:23,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1717 transitions. [2022-11-02 20:51:23,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:51:23,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:23,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:23,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:23,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:23,678 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:51:23,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:23,678 INFO L85 PathProgramCache]: Analyzing trace with hash -824268388, now seen corresponding path program 4 times [2022-11-02 20:51:23,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:23,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621170875] [2022-11-02 20:51:23,679 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:51:23,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:23,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:23,681 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:23,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:51:24,269 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:51:24,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:51:24,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 20:51:24,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:25,270 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 20:51:25,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:28,364 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 20:51:28,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:51:28,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621170875] [2022-11-02 20:51:28,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621170875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:51:28,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:51:28,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-02 20:51:28,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311826314] [2022-11-02 20:51:28,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:51:28,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-02 20:51:28,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:51:28,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-02 20:51:28,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=1927, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 20:51:28,369 INFO L87 Difference]: Start difference. First operand 1440 states and 1717 transitions. Second operand has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:51:44,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:51:44,781 INFO L93 Difference]: Finished difference Result 1543 states and 1852 transitions. [2022-11-02 20:51:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-02 20:51:44,782 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 110 [2022-11-02 20:51:44,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:51:44,784 INFO L225 Difference]: With dead ends: 1543 [2022-11-02 20:51:44,784 INFO L226 Difference]: Without dead ends: 1537 [2022-11-02 20:51:44,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=4121, Invalid=9921, Unknown=0, NotChecked=0, Total=14042 [2022-11-02 20:51:44,786 INFO L413 NwaCegarLoop]: 1217 mSDtfsCounter, 425 mSDsluCounter, 30240 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 31457 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:51:44,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 31457 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-02 20:51:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2022-11-02 20:51:44,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1474. [2022-11-02 20:51:44,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 935 states have (on average 1.8406417112299465) internal successors, (1721), 1447 states have internal predecessors, (1721), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2022-11-02 20:51:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 1763 transitions. [2022-11-02 20:51:44,809 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 1763 transitions. Word has length 110 [2022-11-02 20:51:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:51:44,809 INFO L495 AbstractCegarLoop]: Abstraction has 1474 states and 1763 transitions. [2022-11-02 20:51:44,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 20:51:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 1763 transitions. [2022-11-02 20:51:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-02 20:51:44,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:51:44,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:51:44,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:51:45,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:51:45,026 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-02 20:51:45,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:45,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1958349148, now seen corresponding path program 5 times [2022-11-02 20:51:45,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:51:45,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77645407] [2022-11-02 20:51:45,027 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:51:45,027 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:51:45,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:51:45,028 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:51:45,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:51:46,726 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-02 20:51:46,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:51:46,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-02 20:51:46,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:51:46,788 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 20:51:47,031 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 20:51:47,032 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 20:51:47,082 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 20:51:47,253 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 20:51:50,410 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:51:50,410 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 20:51:50,467 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 20:51:50,522 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-02 20:51:50,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:51:51,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:51:51,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77645407] [2022-11-02 20:51:51,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77645407] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:51:51,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [69945276] [2022-11-02 20:51:51,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:51:51,063 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 20:51:51,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 20:51:51,065 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 20:51:51,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f55f393-54c4-406e-bfc0-3d53d6f1cbf4/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process