./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f 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_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8 --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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- 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-e04fb08 [2022-11-16 11:27:59,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:27:59,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:27:59,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:27:59,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:27:59,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:27:59,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:27:59,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:27:59,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:27:59,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:27:59,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:27:59,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:27:59,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:27:59,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:27:59,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:27:59,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:27:59,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:27:59,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:27:59,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:27:59,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:27:59,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:27:59,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:27:59,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:27:59,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:27:59,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:27:59,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:27:59,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:27:59,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:27:59,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:27:59,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:27:59,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:27:59,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:27:59,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:27:59,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:27:59,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:27:59,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:27:59,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:27:59,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:27:59,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:27:59,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:27:59,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:27:59,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:27:59,957 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:27:59,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:27:59,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:27:59,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:27:59,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:27:59,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:27:59,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:27:59,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:27:59,960 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:27:59,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:27:59,961 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:27:59,961 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:27:59,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:27:59,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:27:59,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:27:59,962 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:27:59,962 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:27:59,963 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:27:59,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:27:59,963 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:27:59,963 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:27:59,963 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:27:59,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:27:59,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:27:59,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:27:59,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:27:59,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:27:59,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:27:59,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:27:59,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:27:59,966 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_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2022-11-16 11:28:00,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:28:00,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:28:00,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:28:00,320 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:28:00,321 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:28:00,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-16 11:28:00,402 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/data/6ba286e65/0cfc4b9db1a648cbaabf8bc9e39a1c94/FLAGe69fc2fc5 [2022-11-16 11:28:00,928 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:28:00,929 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-16 11:28:00,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/data/6ba286e65/0cfc4b9db1a648cbaabf8bc9e39a1c94/FLAGe69fc2fc5 [2022-11-16 11:28:01,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/data/6ba286e65/0cfc4b9db1a648cbaabf8bc9e39a1c94 [2022-11-16 11:28:01,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:28:01,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:28:01,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:28:01,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:28:01,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:28:01,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:28:01" (1/1) ... [2022-11-16 11:28:01,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7abe8906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:01, skipping insertion in model container [2022-11-16 11:28:01,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:28:01" (1/1) ... [2022-11-16 11:28:01,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:28:01,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:28:01,661 WARN L229 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_bb25ba86-7411-41f8-b0ce-e41676c7b011/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-16 11:28:01,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:28:01,692 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) [2022-11-16 11:28:01,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c742ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:01, skipping insertion in model container [2022-11-16 11:28:01,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:28:01,694 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 11:28:01,697 INFO L158 Benchmark]: Toolchain (without parser) took 396.30ms. Allocated memory is still 90.2MB. Free memory was 54.1MB in the beginning and 65.7MB in the end (delta: -11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:28:01,698 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory was 70.7MB in the beginning and 70.6MB in the end (delta: 45.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:28:01,700 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.94ms. Allocated memory is still 90.2MB. Free memory was 53.8MB in the beginning and 65.7MB in the end (delta: -11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:28:01,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 90.2MB. Free memory was 70.7MB in the beginning and 70.6MB in the end (delta: 45.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.94ms. Allocated memory is still 90.2MB. Free memory was 53.8MB in the beginning and 65.7MB in the end (delta: -11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 215]: 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_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8 --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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- 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-e04fb08 [2022-11-16 11:28:03,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:28:03,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:28:03,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:28:03,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:28:03,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:28:03,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:28:03,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:28:03,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:28:03,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:28:03,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:28:03,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:28:03,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:28:03,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:28:03,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:28:03,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:28:03,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:28:03,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:28:03,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:28:03,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:28:03,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:28:03,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:28:03,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:28:03,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:28:03,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:28:03,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:28:03,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:28:03,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:28:03,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:28:03,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:28:03,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:28:03,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:28:03,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:28:03,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:28:03,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:28:03,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:28:03,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:28:03,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:28:03,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:28:03,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:28:03,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:28:03,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 11:28:03,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:28:03,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:28:03,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:28:03,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:28:03,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:28:03,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:28:03,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:28:03,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:28:03,955 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:28:03,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:28:03,956 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:28:03,956 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:28:03,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:28:03,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:28:03,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:28:03,957 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:28:03,957 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:28:03,957 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:28:03,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:28:03,958 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:28:03,958 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:28:03,958 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:28:03,958 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:28:03,959 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:28:03,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:28:03,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:28:03,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:28:03,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:28:03,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:28:03,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:28:03,960 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:28:03,961 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:28:03,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:28:03,961 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_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2022-11-16 11:28:04,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:28:04,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:28:04,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:28:04,347 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:28:04,350 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:28:04,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-16 11:28:04,434 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/data/543743ebb/7ed4fcee1f124b81af2f60d0e85964d1/FLAGe5e9daf9e [2022-11-16 11:28:05,035 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:28:05,036 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2022-11-16 11:28:05,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/data/543743ebb/7ed4fcee1f124b81af2f60d0e85964d1/FLAGe5e9daf9e [2022-11-16 11:28:05,376 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/data/543743ebb/7ed4fcee1f124b81af2f60d0e85964d1 [2022-11-16 11:28:05,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:28:05,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:28:05,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:28:05,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:28:05,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:28:05,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:28:05" (1/1) ... [2022-11-16 11:28:05,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c00ac4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:05, skipping insertion in model container [2022-11-16 11:28:05,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:28:05" (1/1) ... [2022-11-16 11:28:05,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:28:05,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:28:05,623 WARN L229 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_bb25ba86-7411-41f8-b0ce-e41676c7b011/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-16 11:28:05,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:28:05,669 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 11:28:05,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:28:05,747 WARN L229 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_bb25ba86-7411-41f8-b0ce-e41676c7b011/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-16 11:28:05,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:28:05,757 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:28:05,793 WARN L229 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_bb25ba86-7411-41f8-b0ce-e41676c7b011/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-11-16 11:28:05,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:28:05,814 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:28:05,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:05 WrapperNode [2022-11-16 11:28:05,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:28:05,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:28:05,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:28:05,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:28:05,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:05" (1/1) ... [2022-11-16 11:28:05,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:05" (1/1) ... [2022-11-16 11:28:05,876 INFO L138 Inliner]: procedures = 28, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 446 [2022-11-16 11:28:05,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:28:05,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:28:05,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:28:05,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:28:05,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:05" (1/1) ... [2022-11-16 11:28:05,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:05" (1/1) ... [2022-11-16 11:28:05,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:05" (1/1) ... [2022-11-16 11:28:05,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:05" (1/1) ... [2022-11-16 11:28:05,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:05" (1/1) ... [2022-11-16 11:28:05,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:05" (1/1) ... [2022-11-16 11:28:05,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:05" (1/1) ... [2022-11-16 11:28:05,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:05" (1/1) ... [2022-11-16 11:28:05,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:28:05,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:28:05,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:28:05,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:28:05,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:05" (1/1) ... [2022-11-16 11:28:05,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:28:05,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:28:06,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:28:06,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:28:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:28:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 11:28:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:28:06,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 11:28:06,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:28:06,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:28:06,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:28:06,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:28:06,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:28:06,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:28:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 11:28:06,064 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 11:28:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:28:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:28:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:28:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:28:06,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:28:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:28:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 11:28:06,067 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:28:06,309 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:28:06,312 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:28:07,550 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:28:07,956 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:28:07,956 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-16 11:28:07,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:28:07 BoogieIcfgContainer [2022-11-16 11:28:07,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:28:07,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:28:07,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:28:07,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:28:07,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:28:05" (1/3) ... [2022-11-16 11:28:07,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c1d53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:28:07, skipping insertion in model container [2022-11-16 11:28:07,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:28:05" (2/3) ... [2022-11-16 11:28:07,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c1d53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:28:07, skipping insertion in model container [2022-11-16 11:28:07,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:28:07" (3/3) ... [2022-11-16 11:28:07,976 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2022-11-16 11:28:08,004 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:28:08,005 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2022-11-16 11:28:08,005 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:28:08,185 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 11:28:08,243 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:28:08,261 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 370 places, 394 transitions, 820 flow [2022-11-16 11:28:08,265 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 370 places, 394 transitions, 820 flow [2022-11-16 11:28:08,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 394 transitions, 820 flow [2022-11-16 11:28:08,447 INFO L130 PetriNetUnfolder]: 37/390 cut-off events. [2022-11-16 11:28:08,447 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:28:08,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 390 events. 37/390 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 456 event pairs, 0 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 331. Up to 8 conditions per place. [2022-11-16 11:28:08,463 INFO L119 LiptonReduction]: Number of co-enabled transitions 10000 [2022-11-16 11:29:09,173 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 157 DAG size of output: 156 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 11:29:17,851 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 163 DAG size of output: 162 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 11:29:20,835 INFO L134 LiptonReduction]: Checked pairs total: 13340 [2022-11-16 11:29:20,835 INFO L136 LiptonReduction]: Total number of compositions: 452 [2022-11-16 11:29:20,843 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 87 transitions, 206 flow [2022-11-16 11:29:21,799 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 15555 states, 9553 states have (on average 7.390243902439025) internal successors, (70599), 15554 states have internal predecessors, (70599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:21,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:29:21,848 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;@416f43cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:29:21,848 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2022-11-16 11:29:21,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 15555 states, 9553 states have (on average 7.390243902439025) internal successors, (70599), 15554 states have internal predecessors, (70599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:21,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:29:21,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:21,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:29:21,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-16 11:29:21,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:21,888 INFO L85 PathProgramCache]: Analyzing trace with hash 64567, now seen corresponding path program 1 times [2022-11-16 11:29:21,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:29:21,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780369157] [2022-11-16 11:29:21,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:21,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:21,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:29:21,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:29:21,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 11:29:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:22,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:29:22,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:22,406 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-16 11:29:22,407 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-16 11:29:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:29:22,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:29:22,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:29:22,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780369157] [2022-11-16 11:29:22,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780369157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:29:22,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:29:22,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:29:22,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934813757] [2022-11-16 11:29:22,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:29:22,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:29:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:29:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:29:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:22,548 INFO L87 Difference]: Start difference. First operand has 15555 states, 9553 states have (on average 7.390243902439025) internal successors, (70599), 15554 states have internal predecessors, (70599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:23,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:23,814 INFO L93 Difference]: Finished difference Result 15550 states and 70594 transitions. [2022-11-16 11:29:23,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:29:23,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-16 11:29:23,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:24,130 INFO L225 Difference]: With dead ends: 15550 [2022-11-16 11:29:24,130 INFO L226 Difference]: Without dead ends: 15550 [2022-11-16 11:29:24,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:24,141 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:24,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 11:29:24,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15550 states. [2022-11-16 11:29:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15550 to 15550. [2022-11-16 11:29:25,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15550 states, 9553 states have (on average 7.3897205066471265) internal successors, (70594), 15549 states have internal predecessors, (70594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:25,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15550 states to 15550 states and 70594 transitions. [2022-11-16 11:29:25,583 INFO L78 Accepts]: Start accepts. Automaton has 15550 states and 70594 transitions. Word has length 2 [2022-11-16 11:29:25,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:25,584 INFO L495 AbstractCegarLoop]: Abstraction has 15550 states and 70594 transitions. [2022-11-16 11:29:25,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:25,585 INFO L276 IsEmpty]: Start isEmpty. Operand 15550 states and 70594 transitions. [2022-11-16 11:29:25,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:29:25,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:25,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:29:25,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:29:25,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:25,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-16 11:29:25,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:25,815 INFO L85 PathProgramCache]: Analyzing trace with hash 64568, now seen corresponding path program 1 times [2022-11-16 11:29:25,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:29:25,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886881168] [2022-11-16 11:29:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:25,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:25,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:29:25,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:29:25,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 11:29:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:25,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:29:25,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:26,191 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-16 11:29:26,192 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-16 11:29:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:29:26,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:29:26,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:29:26,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886881168] [2022-11-16 11:29:26,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886881168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:29:26,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:29:26,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:29:26,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677445747] [2022-11-16 11:29:26,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:29:26,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:29:26,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:29:26,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:29:26,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:26,243 INFO L87 Difference]: Start difference. First operand 15550 states and 70594 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:28,062 INFO L93 Difference]: Finished difference Result 31095 states and 141183 transitions. [2022-11-16 11:29:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:29:28,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-16 11:29:28,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:28,592 INFO L225 Difference]: With dead ends: 31095 [2022-11-16 11:29:28,593 INFO L226 Difference]: Without dead ends: 31095 [2022-11-16 11:29:28,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:28,597 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:28,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 0 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:29:28,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31095 states. [2022-11-16 11:29:30,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31095 to 15554. [2022-11-16 11:29:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15554 states, 9557 states have (on average 7.387673956262425) internal successors, (70604), 15553 states have internal predecessors, (70604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:30,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15554 states to 15554 states and 70604 transitions. [2022-11-16 11:29:30,444 INFO L78 Accepts]: Start accepts. Automaton has 15554 states and 70604 transitions. Word has length 2 [2022-11-16 11:29:30,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:30,445 INFO L495 AbstractCegarLoop]: Abstraction has 15554 states and 70604 transitions. [2022-11-16 11:29:30,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:30,445 INFO L276 IsEmpty]: Start isEmpty. Operand 15554 states and 70604 transitions. [2022-11-16 11:29:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:29:30,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:30,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:29:30,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-16 11:29:30,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:30,646 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-16 11:29:30,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:30,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2009043, now seen corresponding path program 1 times [2022-11-16 11:29:30,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:29:30,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859784344] [2022-11-16 11:29:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:30,647 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:30,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:29:30,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:29:30,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 11:29:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:30,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:29:30,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:31,049 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-16 11:29:31,049 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-16 11:29:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:29:31,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:29:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:29:31,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:29:31,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859784344] [2022-11-16 11:29:31,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859784344] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:29:31,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:29:31,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-16 11:29:31,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100450355] [2022-11-16 11:29:31,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:29:31,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:29:31,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:29:31,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:29:31,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:29:31,464 INFO L87 Difference]: Start difference. First operand 15554 states and 70604 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:36,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:36,178 INFO L93 Difference]: Finished difference Result 46648 states and 211792 transitions. [2022-11-16 11:29:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:29:36,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 11:29:36,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:36,815 INFO L225 Difference]: With dead ends: 46648 [2022-11-16 11:29:36,816 INFO L226 Difference]: Without dead ends: 46648 [2022-11-16 11:29:36,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:29:36,826 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 458 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:36,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 0 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 11:29:36,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46648 states. [2022-11-16 11:29:38,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46648 to 15566. [2022-11-16 11:29:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15566 states, 9569 states have (on average 7.381544571010555) internal successors, (70634), 15565 states have internal predecessors, (70634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:38,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15566 states to 15566 states and 70634 transitions. [2022-11-16 11:29:38,091 INFO L78 Accepts]: Start accepts. Automaton has 15566 states and 70634 transitions. Word has length 3 [2022-11-16 11:29:38,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:38,092 INFO L495 AbstractCegarLoop]: Abstraction has 15566 states and 70634 transitions. [2022-11-16 11:29:38,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:38,092 INFO L276 IsEmpty]: Start isEmpty. Operand 15566 states and 70634 transitions. [2022-11-16 11:29:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:29:38,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:38,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:29:38,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:29:38,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:38,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-16 11:29:38,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:38,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1934226080, now seen corresponding path program 1 times [2022-11-16 11:29:38,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:29:38,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763816213] [2022-11-16 11:29:38,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:38,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:38,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:29:38,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:29:38,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 11:29:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:38,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 11:29:38,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:38,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:38,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:38,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:38,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:38,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:38,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:38,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:38,737 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-16 11:29:38,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2022-11-16 11:29:38,794 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-16 11:29:38,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2022-11-16 11:29:38,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:38,868 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 11:29:38,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:38,905 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 11:29:38,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:38,942 INFO L350 Elim1Store]: Elim1 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 [2022-11-16 11:29:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:29:38,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:29:38,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:29:38,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763816213] [2022-11-16 11:29:38,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763816213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:29:38,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:29:38,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:29:38,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788753158] [2022-11-16 11:29:38,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:29:38,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:29:38,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:29:38,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:29:38,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:29:38,984 INFO L87 Difference]: Start difference. First operand 15566 states and 70634 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:39,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:39,847 INFO L93 Difference]: Finished difference Result 12541 states and 55509 transitions. [2022-11-16 11:29:39,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:29:39,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 11:29:39,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:39,946 INFO L225 Difference]: With dead ends: 12541 [2022-11-16 11:29:39,946 INFO L226 Difference]: Without dead ends: 12541 [2022-11-16 11:29:39,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:29:39,949 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:39,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 3 Unchecked, 0.5s Time] [2022-11-16 11:29:39,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12541 states. [2022-11-16 11:29:40,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12541 to 12541. [2022-11-16 11:29:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12541 states, 8170 states have (on average 6.794247246022032) internal successors, (55509), 12540 states have internal predecessors, (55509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12541 states to 12541 states and 55509 transitions. [2022-11-16 11:29:40,481 INFO L78 Accepts]: Start accepts. Automaton has 12541 states and 55509 transitions. Word has length 5 [2022-11-16 11:29:40,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:40,482 INFO L495 AbstractCegarLoop]: Abstraction has 12541 states and 55509 transitions. [2022-11-16 11:29:40,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:40,482 INFO L276 IsEmpty]: Start isEmpty. Operand 12541 states and 55509 transitions. [2022-11-16 11:29:40,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:29:40,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:40,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:29:40,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:29:40,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:40,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-16 11:29:40,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:40,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1934226081, now seen corresponding path program 1 times [2022-11-16 11:29:40,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:29:40,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521970788] [2022-11-16 11:29:40,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:40,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:40,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:29:40,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:29:40,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 11:29:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:40,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:29:40,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:40,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:41,257 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-16 11:29:41,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-16 11:29:41,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:41,679 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 11:29:41,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-16 11:29:41,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:42,016 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-16 11:29:42,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 60 [2022-11-16 11:29:42,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:42,367 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-16 11:29:42,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 60 [2022-11-16 11:29:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:29:43,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:29:43,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:29:43,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521970788] [2022-11-16 11:29:43,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521970788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:29:43,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:29:43,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:29:43,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701923228] [2022-11-16 11:29:43,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:29:43,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:29:43,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:29:43,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:29:43,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:29:43,200 INFO L87 Difference]: Start difference. First operand 12541 states and 55509 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:43,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:43,691 INFO L93 Difference]: Finished difference Result 12544 states and 55515 transitions. [2022-11-16 11:29:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:29:43,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 11:29:43,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:43,771 INFO L225 Difference]: With dead ends: 12544 [2022-11-16 11:29:43,771 INFO L226 Difference]: Without dead ends: 12544 [2022-11-16 11:29:43,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:29:43,772 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:43,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 142 Unchecked, 0.4s Time] [2022-11-16 11:29:43,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12544 states. [2022-11-16 11:29:44,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12544 to 12544. [2022-11-16 11:29:44,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12544 states, 8173 states have (on average 6.7924874587054935) internal successors, (55515), 12543 states have internal predecessors, (55515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12544 states to 12544 states and 55515 transitions. [2022-11-16 11:29:44,370 INFO L78 Accepts]: Start accepts. Automaton has 12544 states and 55515 transitions. Word has length 5 [2022-11-16 11:29:44,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:44,370 INFO L495 AbstractCegarLoop]: Abstraction has 12544 states and 55515 transitions. [2022-11-16 11:29:44,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:44,371 INFO L276 IsEmpty]: Start isEmpty. Operand 12544 states and 55515 transitions. [2022-11-16 11:29:44,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:29:44,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:44,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:29:44,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:29:44,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:44,572 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-16 11:29:44,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:44,573 INFO L85 PathProgramCache]: Analyzing trace with hash -171504527, now seen corresponding path program 1 times [2022-11-16 11:29:44,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:29:44,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248302936] [2022-11-16 11:29:44,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:44,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:29:44,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:29:44,574 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:29:44,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 11:29:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:44,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:29:44,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:44,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:44,954 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-16 11:29:44,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-16 11:29:45,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:45,841 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-16 11:29:45,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-16 11:29:46,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:29:47,085 INFO L321 Elim1Store]: treesize reduction 66, result has 49.2 percent of original size [2022-11-16 11:29:47,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 83 treesize of output 146 [2022-11-16 11:29:54,037 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-16 11:29:54,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 121 treesize of output 214 [2022-11-16 11:30:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:30:11,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:30:11,049 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:30:11,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248302936] [2022-11-16 11:30:11,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248302936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:11,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:11,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:30:11,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40918857] [2022-11-16 11:30:11,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:11,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:30:11,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:30:11,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:30:11,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:30:11,052 INFO L87 Difference]: Start difference. First operand 12544 states and 55515 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:30:11,529 INFO L93 Difference]: Finished difference Result 12550 states and 55528 transitions. [2022-11-16 11:30:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:30:11,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 11:30:11,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:30:11,602 INFO L225 Difference]: With dead ends: 12550 [2022-11-16 11:30:11,603 INFO L226 Difference]: Without dead ends: 12550 [2022-11-16 11:30:11,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:30:11,603 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:30:11,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 75 Unchecked, 0.4s Time] [2022-11-16 11:30:11,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12550 states. [2022-11-16 11:30:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12550 to 12548. [2022-11-16 11:30:11,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12548 states, 8177 states have (on average 6.790265378500672) internal successors, (55524), 12547 states have internal predecessors, (55524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12548 states to 12548 states and 55524 transitions. [2022-11-16 11:30:12,052 INFO L78 Accepts]: Start accepts. Automaton has 12548 states and 55524 transitions. Word has length 6 [2022-11-16 11:30:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:30:12,052 INFO L495 AbstractCegarLoop]: Abstraction has 12548 states and 55524 transitions. [2022-11-16 11:30:12,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:12,052 INFO L276 IsEmpty]: Start isEmpty. Operand 12548 states and 55524 transitions. [2022-11-16 11:30:12,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:30:12,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:30:12,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:30:12,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:30:12,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:30:12,254 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-16 11:30:12,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:12,254 INFO L85 PathProgramCache]: Analyzing trace with hash -168532650, now seen corresponding path program 1 times [2022-11-16 11:30:12,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:30:12,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155289447] [2022-11-16 11:30:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:12,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:30:12,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:30:12,256 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:30:12,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb25ba86-7411-41f8-b0ce-e41676c7b011/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 11:30:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:12,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:30:12,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:30:12,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:30:12,665 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-16 11:30:12,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-16 11:30:13,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:30:13,737 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-16 11:30:13,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-16 11:30:14,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:30:14,834 INFO L321 Elim1Store]: treesize reduction 66, result has 49.2 percent of original size [2022-11-16 11:30:14,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 83 treesize of output 146 [2022-11-16 11:30:27,013 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-16 11:30:27,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 121 treesize of output 214