./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/unroll-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro --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 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e --- 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-8393723 [2022-11-18 21:01:29,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:01:29,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:01:29,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:01:29,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:01:29,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:01:29,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:01:29,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:01:29,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:01:29,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:01:29,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:01:29,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:01:29,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:01:29,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:01:29,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:01:29,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:01:29,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:01:29,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:01:29,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:01:29,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:01:29,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:01:29,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:01:29,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:01:29,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:01:29,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:01:29,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:01:29,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:01:29,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:01:29,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:01:29,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:01:29,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:01:29,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:01:29,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:01:29,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:01:29,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:01:29,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:01:29,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:01:29,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:01:29,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:01:29,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:01:29,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:01:29,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 21:01:29,988 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:01:29,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:01:29,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:01:29,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:01:29,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:01:29,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:01:29,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:01:29,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:01:29,995 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:01:29,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:01:29,997 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:01:29,997 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:01:29,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:01:29,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:01:29,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:01:29,998 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 21:01:29,998 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 21:01:29,998 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 21:01:29,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:01:29,998 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 21:01:29,999 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:01:29,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:01:29,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:01:29,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:01:30,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:01:30,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:01:30,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:01:30,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:01:30,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:01:30,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:01:30,002 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_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e [2022-11-18 21:01:30,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:01:30,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:01:30,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:01:30,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:01:30,365 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:01:30,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-11-18 21:01:30,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/data/e97cc743f/52df4efd7d8049748a04ea3067f569a8/FLAG309667742 [2022-11-18 21:01:30,987 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:01:30,988 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-11-18 21:01:31,004 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/data/e97cc743f/52df4efd7d8049748a04ea3067f569a8/FLAG309667742 [2022-11-18 21:01:31,339 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/data/e97cc743f/52df4efd7d8049748a04ea3067f569a8 [2022-11-18 21:01:31,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:01:31,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:01:31,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:01:31,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:01:31,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:01:31,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:01:31" (1/1) ... [2022-11-18 21:01:31,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@648d3628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:31, skipping insertion in model container [2022-11-18 21:01:31,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:01:31" (1/1) ... [2022-11-18 21:01:31,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:01:31,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:01:31,614 WARN L234 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_32e074a1-1080-47db-9249-fe759dd60dc5/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2022-11-18 21:01:31,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:01:31,651 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) [2022-11-18 21:01:31,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4e03ea94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:31, skipping insertion in model container [2022-11-18 21:01:31,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:01:31,653 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 21:01:31,655 INFO L158 Benchmark]: Toolchain (without parser) took 310.67ms. Allocated memory is still 134.2MB. Free memory was 100.2MB in the beginning and 110.8MB in the end (delta: -10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 21:01:31,658 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory was 54.7MB in the beginning and 54.6MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 21:01:31,660 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.65ms. Allocated memory is still 134.2MB. Free memory was 100.2MB in the beginning and 110.8MB in the end (delta: -10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 21:01:31,663 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory was 54.7MB in the beginning and 54.6MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.65ms. Allocated memory is still 134.2MB. Free memory was 100.2MB in the beginning and 110.8MB in the end (delta: -10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 103]: 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_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro --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 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e --- 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-8393723 [2022-11-18 21:01:33,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:01:33,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:01:33,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:01:33,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:01:33,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:01:33,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:01:33,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:01:33,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:01:33,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:01:33,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:01:33,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:01:33,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:01:33,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:01:33,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:01:33,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:01:33,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:01:33,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:01:33,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:01:33,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:01:33,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:01:33,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:01:33,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:01:33,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:01:33,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:01:33,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:01:33,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:01:33,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:01:33,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:01:33,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:01:33,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:01:33,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:01:33,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:01:33,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:01:33,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:01:33,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:01:33,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:01:33,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:01:33,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:01:33,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:01:33,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:01:33,974 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 21:01:34,008 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:01:34,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:01:34,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:01:34,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:01:34,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:01:34,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:01:34,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:01:34,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:01:34,014 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:01:34,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:01:34,015 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:01:34,016 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:01:34,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:01:34,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:01:34,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:01:34,017 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 21:01:34,017 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 21:01:34,017 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 21:01:34,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:01:34,018 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 21:01:34,018 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 21:01:34,018 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 21:01:34,018 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:01:34,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:01:34,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:01:34,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:01:34,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:01:34,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:01:34,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:01:34,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:01:34,020 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 21:01:34,021 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 21:01:34,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 21:01:34,021 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_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7071c3ff0bb3d9f81f254bc51d27ce3551a85cc081b1b878560a7d4c8f67639e [2022-11-18 21:01:34,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:01:34,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:01:34,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:01:34,532 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:01:34,535 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:01:34,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-11-18 21:01:34,631 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/data/b69333447/03e38244c8a14ce1a64ad303cb030016/FLAGad5f0d27f [2022-11-18 21:01:35,154 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:01:35,155 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/sv-benchmarks/c/weaver/unroll-4.wvr.c [2022-11-18 21:01:35,163 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/data/b69333447/03e38244c8a14ce1a64ad303cb030016/FLAGad5f0d27f [2022-11-18 21:01:35,553 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/data/b69333447/03e38244c8a14ce1a64ad303cb030016 [2022-11-18 21:01:35,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:01:35,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:01:35,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:01:35,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:01:35,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:01:35,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:01:35" (1/1) ... [2022-11-18 21:01:35,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb3a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:35, skipping insertion in model container [2022-11-18 21:01:35,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:01:35" (1/1) ... [2022-11-18 21:01:35,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:01:35,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:01:35,873 WARN L234 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_32e074a1-1080-47db-9249-fe759dd60dc5/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2022-11-18 21:01:35,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:01:35,970 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 21:01:35,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:01:36,001 WARN L234 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_32e074a1-1080-47db-9249-fe759dd60dc5/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2022-11-18 21:01:36,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:01:36,028 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:01:36,052 WARN L234 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_32e074a1-1080-47db-9249-fe759dd60dc5/sv-benchmarks/c/weaver/unroll-4.wvr.c[2572,2585] [2022-11-18 21:01:36,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:01:36,071 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:01:36,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:36 WrapperNode [2022-11-18 21:01:36,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:01:36,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:01:36,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:01:36,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:01:36,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:36" (1/1) ... [2022-11-18 21:01:36,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:36" (1/1) ... [2022-11-18 21:01:36,131 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 152 [2022-11-18 21:01:36,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:01:36,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:01:36,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:01:36,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:01:36,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:36" (1/1) ... [2022-11-18 21:01:36,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:36" (1/1) ... [2022-11-18 21:01:36,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:36" (1/1) ... [2022-11-18 21:01:36,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:36" (1/1) ... [2022-11-18 21:01:36,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:36" (1/1) ... [2022-11-18 21:01:36,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:36" (1/1) ... [2022-11-18 21:01:36,187 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:36" (1/1) ... [2022-11-18 21:01:36,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:36" (1/1) ... [2022-11-18 21:01:36,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:01:36,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:01:36,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:01:36,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:01:36,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:36" (1/1) ... [2022-11-18 21:01:36,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:01:36,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:01:36,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:01:36,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:01:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:01:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 21:01:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:01:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 21:01:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:01:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:01:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:01:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:01:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 21:01:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:01:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:01:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:01:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 21:01:36,285 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:01:36,420 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:01:36,422 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:01:37,008 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:01:37,017 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:01:37,018 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 21:01:37,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:01:37 BoogieIcfgContainer [2022-11-18 21:01:37,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:01:37,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:01:37,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:01:37,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:01:37,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:01:35" (1/3) ... [2022-11-18 21:01:37,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7add44f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:01:37, skipping insertion in model container [2022-11-18 21:01:37,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:36" (2/3) ... [2022-11-18 21:01:37,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7add44f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:01:37, skipping insertion in model container [2022-11-18 21:01:37,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:01:37" (3/3) ... [2022-11-18 21:01:37,029 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2022-11-18 21:01:37,048 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:01:37,049 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-18 21:01:37,049 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:01:37,228 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 21:01:37,268 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 21:01:37,282 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 221 transitions, 458 flow [2022-11-18 21:01:37,285 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 221 transitions, 458 flow [2022-11-18 21:01:37,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 221 transitions, 458 flow [2022-11-18 21:01:37,401 INFO L130 PetriNetUnfolder]: 16/219 cut-off events. [2022-11-18 21:01:37,401 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 21:01:37,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 219 events. 16/219 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 273 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2022-11-18 21:01:37,419 INFO L119 LiptonReduction]: Number of co-enabled transitions 5052 [2022-11-18 21:02:09,058 INFO L134 LiptonReduction]: Checked pairs total: 5042 [2022-11-18 21:02:09,059 INFO L136 LiptonReduction]: Total number of compositions: 257 [2022-11-18 21:02:09,068 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 41 transitions, 98 flow [2022-11-18 21:02:09,106 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 294 states, 184 states have (on average 4.043478260869565) internal successors, (744), 293 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:09,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:02:09,135 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;@7758d3a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:02:09,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-18 21:02:09,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 294 states, 184 states have (on average 4.043478260869565) internal successors, (744), 293 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:09,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 21:02:09,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:09,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 21:02:09,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:09,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:09,151 INFO L85 PathProgramCache]: Analyzing trace with hash 28343, now seen corresponding path program 1 times [2022-11-18 21:02:09,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:09,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014893102] [2022-11-18 21:02:09,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:09,165 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 [2022-11-18 21:02:09,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:09,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:09,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:09,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 21:02:09,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:09,549 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 21:02:09,550 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 21:02:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:09,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:09,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:09,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014893102] [2022-11-18 21:02:09,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014893102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:09,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:09,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 21:02:09,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117265641] [2022-11-18 21:02:09,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:09,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:02:09,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:02:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:09,639 INFO L87 Difference]: Start difference. First operand has 294 states, 184 states have (on average 4.043478260869565) internal successors, (744), 293 states have internal predecessors, (744), 0 states have call successors, (0), 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) [2022-11-18 21:02:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:09,864 INFO L93 Difference]: Finished difference Result 222 states and 559 transitions. [2022-11-18 21:02:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:02:09,867 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 [2022-11-18 21:02:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:09,878 INFO L225 Difference]: With dead ends: 222 [2022-11-18 21:02:09,879 INFO L226 Difference]: Without dead ends: 222 [2022-11-18 21:02:09,880 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 [2022-11-18 21:02:09,883 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:09,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 31 Unchecked, 0.2s Time] [2022-11-18 21:02:09,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-18 21:02:09,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-11-18 21:02:09,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 146 states have (on average 3.828767123287671) internal successors, (559), 221 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 559 transitions. [2022-11-18 21:02:09,937 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 559 transitions. Word has length 2 [2022-11-18 21:02:09,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:09,938 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 559 transitions. [2022-11-18 21:02:09,939 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) [2022-11-18 21:02:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 559 transitions. [2022-11-18 21:02:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 21:02:09,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:09,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 21:02:09,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:10,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:10,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:10,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:10,152 INFO L85 PathProgramCache]: Analyzing trace with hash 28345, now seen corresponding path program 1 times [2022-11-18 21:02:10,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:10,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781303319] [2022-11-18 21:02:10,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:10,154 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 [2022-11-18 21:02:10,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:10,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:10,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:10,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:02:10,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:10,289 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-18 21:02:10,289 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-18 21:02:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:10,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:10,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:10,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781303319] [2022-11-18 21:02:10,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781303319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:10,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:10,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 21:02:10,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627372115] [2022-11-18 21:02:10,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:10,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:02:10,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:10,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:02:10,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:10,311 INFO L87 Difference]: Start difference. First operand 222 states and 559 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) [2022-11-18 21:02:10,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:10,562 INFO L93 Difference]: Finished difference Result 221 states and 557 transitions. [2022-11-18 21:02:10,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:02:10,563 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 [2022-11-18 21:02:10,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:10,565 INFO L225 Difference]: With dead ends: 221 [2022-11-18 21:02:10,566 INFO L226 Difference]: Without dead ends: 221 [2022-11-18 21:02:10,566 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 [2022-11-18 21:02:10,567 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:10,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:02:10,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-18 21:02:10,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2022-11-18 21:02:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 146 states have (on average 3.815068493150685) internal successors, (557), 220 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 557 transitions. [2022-11-18 21:02:10,586 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 557 transitions. Word has length 2 [2022-11-18 21:02:10,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:10,587 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 557 transitions. [2022-11-18 21:02:10,587 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) [2022-11-18 21:02:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 557 transitions. [2022-11-18 21:02:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 21:02:10,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:10,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 21:02:10,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:10,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:10,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:10,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash 28527, now seen corresponding path program 1 times [2022-11-18 21:02:10,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:10,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721237527] [2022-11-18 21:02:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:10,801 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 [2022-11-18 21:02:10,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:10,805 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:10,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:10,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 21:02:10,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:10,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:10,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:10,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721237527] [2022-11-18 21:02:10,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721237527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:10,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:10,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 21:02:10,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269172949] [2022-11-18 21:02:10,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:10,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:02:10,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:10,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:02:10,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:10,930 INFO L87 Difference]: Start difference. First operand 221 states and 557 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) [2022-11-18 21:02:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:11,268 INFO L93 Difference]: Finished difference Result 221 states and 554 transitions. [2022-11-18 21:02:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:02:11,269 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 [2022-11-18 21:02:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:11,272 INFO L225 Difference]: With dead ends: 221 [2022-11-18 21:02:11,272 INFO L226 Difference]: Without dead ends: 221 [2022-11-18 21:02:11,272 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 [2022-11-18 21:02:11,273 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:11,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:02:11,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-18 21:02:11,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2022-11-18 21:02:11,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 146 states have (on average 3.7945205479452055) internal successors, (554), 220 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 554 transitions. [2022-11-18 21:02:11,313 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 554 transitions. Word has length 2 [2022-11-18 21:02:11,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:11,313 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 554 transitions. [2022-11-18 21:02:11,313 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) [2022-11-18 21:02:11,313 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 554 transitions. [2022-11-18 21:02:11,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 21:02:11,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:11,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 21:02:11,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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)] Ended with exit code 0 [2022-11-18 21:02:11,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:11,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:11,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:11,528 INFO L85 PathProgramCache]: Analyzing trace with hash 882920, now seen corresponding path program 1 times [2022-11-18 21:02:11,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:11,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344286262] [2022-11-18 21:02:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:11,529 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 [2022-11-18 21:02:11,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:11,530 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:11,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:11,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 21:02:11,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:11,716 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 21:02:11,716 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 21:02:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:11,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:12,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:12,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344286262] [2022-11-18 21:02:12,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344286262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:12,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:12,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 21:02:12,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384765237] [2022-11-18 21:02:12,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:12,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:12,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:12,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:12,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:02:12,186 INFO L87 Difference]: Start difference. First operand 221 states and 554 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) [2022-11-18 21:02:13,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:13,145 INFO L93 Difference]: Finished difference Result 441 states and 1113 transitions. [2022-11-18 21:02:13,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:02:13,146 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 [2022-11-18 21:02:13,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:13,151 INFO L225 Difference]: With dead ends: 441 [2022-11-18 21:02:13,151 INFO L226 Difference]: Without dead ends: 441 [2022-11-18 21:02:13,151 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 [2022-11-18 21:02:13,152 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 153 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:13,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 6 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 21:02:13,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-18 21:02:13,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 224. [2022-11-18 21:02:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 149 states have (on average 3.7986577181208054) internal successors, (566), 223 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:13,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 566 transitions. [2022-11-18 21:02:13,167 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 566 transitions. Word has length 3 [2022-11-18 21:02:13,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:13,167 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 566 transitions. [2022-11-18 21:02:13,167 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) [2022-11-18 21:02:13,168 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 566 transitions. [2022-11-18 21:02:13,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 21:02:13,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:13,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 21:02:13,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:13,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:13,395 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:13,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:13,396 INFO L85 PathProgramCache]: Analyzing trace with hash 883104, now seen corresponding path program 1 times [2022-11-18 21:02:13,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:13,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830623366] [2022-11-18 21:02:13,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:13,397 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 [2022-11-18 21:02:13,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:13,398 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:13,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:13,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 21:02:13,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:13,552 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-18 21:02:13,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-18 21:02:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:13,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:13,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:13,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830623366] [2022-11-18 21:02:13,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830623366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:13,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:13,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 21:02:13,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396431088] [2022-11-18 21:02:13,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:13,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:02:13,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:13,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:02:13,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:13,624 INFO L87 Difference]: Start difference. First operand 224 states and 566 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:13,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:13,842 INFO L93 Difference]: Finished difference Result 223 states and 562 transitions. [2022-11-18 21:02:13,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:02:13,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 21:02:13,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:13,844 INFO L225 Difference]: With dead ends: 223 [2022-11-18 21:02:13,844 INFO L226 Difference]: Without dead ends: 223 [2022-11-18 21:02:13,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:13,846 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:13,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 29 Unchecked, 0.2s Time] [2022-11-18 21:02:13,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-18 21:02:13,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2022-11-18 21:02:13,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 149 states have (on average 3.771812080536913) internal successors, (562), 222 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:13,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 562 transitions. [2022-11-18 21:02:13,874 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 562 transitions. Word has length 3 [2022-11-18 21:02:13,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:13,875 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 562 transitions. [2022-11-18 21:02:13,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:13,875 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 562 transitions. [2022-11-18 21:02:13,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 21:02:13,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:13,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 21:02:13,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:14,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:14,083 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:14,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:14,084 INFO L85 PathProgramCache]: Analyzing trace with hash 883105, now seen corresponding path program 1 times [2022-11-18 21:02:14,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:14,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687825024] [2022-11-18 21:02:14,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:14,084 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 [2022-11-18 21:02:14,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:14,086 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:14,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:14,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 21:02:14,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:14,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:14,272 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-18 21:02:14,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2022-11-18 21:02:14,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 21:02:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:14,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:14,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:14,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687825024] [2022-11-18 21:02:14,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687825024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:14,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:14,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 21:02:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559090618] [2022-11-18 21:02:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:14,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:02:14,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:02:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:14,428 INFO L87 Difference]: Start difference. First operand 223 states and 562 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:14,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:14,622 INFO L93 Difference]: Finished difference Result 222 states and 558 transitions. [2022-11-18 21:02:14,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:02:14,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 21:02:14,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:14,625 INFO L225 Difference]: With dead ends: 222 [2022-11-18 21:02:14,625 INFO L226 Difference]: Without dead ends: 222 [2022-11-18 21:02:14,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:14,627 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:14,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2022-11-18 21:02:14,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-18 21:02:14,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-11-18 21:02:14,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 149 states have (on average 3.7449664429530203) internal successors, (558), 221 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:14,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 558 transitions. [2022-11-18 21:02:14,638 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 558 transitions. Word has length 3 [2022-11-18 21:02:14,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:14,638 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 558 transitions. [2022-11-18 21:02:14,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:14,639 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 558 transitions. [2022-11-18 21:02:14,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 21:02:14,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:14,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 21:02:14,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:14,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:14,853 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:14,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:14,854 INFO L85 PathProgramCache]: Analyzing trace with hash 848681386, now seen corresponding path program 1 times [2022-11-18 21:02:14,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:14,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852934455] [2022-11-18 21:02:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:14,863 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 [2022-11-18 21:02:14,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:14,865 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:14,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:15,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:02:15,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:15,112 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 21:02:15,113 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 21:02:15,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:15,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:15,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:15,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:15,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852934455] [2022-11-18 21:02:15,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852934455] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:15,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:15,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 21:02:15,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035828603] [2022-11-18 21:02:15,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:15,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:15,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:15,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:15,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:02:15,674 INFO L87 Difference]: Start difference. First operand 222 states and 558 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:15,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:15,900 INFO L93 Difference]: Finished difference Result 228 states and 578 transitions. [2022-11-18 21:02:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:02:15,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 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 [2022-11-18 21:02:15,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:15,903 INFO L225 Difference]: With dead ends: 228 [2022-11-18 21:02:15,903 INFO L226 Difference]: Without dead ends: 228 [2022-11-18 21:02:15,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:02:15,904 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:15,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 30 Unchecked, 0.2s Time] [2022-11-18 21:02:15,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-18 21:02:15,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2022-11-18 21:02:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 152 states have (on average 3.736842105263158) internal successors, (568), 224 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 568 transitions. [2022-11-18 21:02:15,918 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 568 transitions. Word has length 5 [2022-11-18 21:02:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:15,918 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 568 transitions. [2022-11-18 21:02:15,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 568 transitions. [2022-11-18 21:02:15,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 21:02:15,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:15,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 21:02:15,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:16,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:16,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:16,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:16,133 INFO L85 PathProgramCache]: Analyzing trace with hash 848681387, now seen corresponding path program 1 times [2022-11-18 21:02:16,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:16,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687654647] [2022-11-18 21:02:16,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:16,134 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 [2022-11-18 21:02:16,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:16,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:16,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (9)] Waiting until timeout for monitored process [2022-11-18 21:02:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 21:02:16,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:16,300 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-18 21:02:16,300 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 2 case distinctions, treesize of input 12 treesize of output 22 [2022-11-18 21:02:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:16,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:16,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:16,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687654647] [2022-11-18 21:02:16,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687654647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:16,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:16,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 21:02:16,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711562127] [2022-11-18 21:02:16,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:16,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:02:16,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:16,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:02:16,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:16,335 INFO L87 Difference]: Start difference. First operand 225 states and 568 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-11-18 21:02:16,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:16,562 INFO L93 Difference]: Finished difference Result 212 states and 540 transitions. [2022-11-18 21:02:16,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:02:16,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2022-11-18 21:02:16,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:16,564 INFO L225 Difference]: With dead ends: 212 [2022-11-18 21:02:16,564 INFO L226 Difference]: Without dead ends: 212 [2022-11-18 21:02:16,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:16,565 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:16,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:02:16,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-18 21:02:16,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-11-18 21:02:16,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 148 states have (on average 3.6486486486486487) internal successors, (540), 211 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 540 transitions. [2022-11-18 21:02:16,575 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 540 transitions. Word has length 5 [2022-11-18 21:02:16,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:16,575 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 540 transitions. [2022-11-18 21:02:16,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-11-18 21:02:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 540 transitions. [2022-11-18 21:02:16,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 21:02:16,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:16,576 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-18 21:02:16,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (9)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:16,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:16,777 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:16,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:16,777 INFO L85 PathProgramCache]: Analyzing trace with hash 537522935, now seen corresponding path program 2 times [2022-11-18 21:02:16,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:16,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417548883] [2022-11-18 21:02:16,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:02:16,778 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 [2022-11-18 21:02:16,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:16,779 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:16,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (10)] Waiting until timeout for monitored process [2022-11-18 21:02:16,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:02:16,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:16,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 21:02:16,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:16,956 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 21:02:16,957 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 21:02:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:17,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:17,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:17,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417548883] [2022-11-18 21:02:17,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417548883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:17,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:17,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-18 21:02:17,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56672896] [2022-11-18 21:02:17,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:17,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:02:17,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:02:17,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:02:17,909 INFO L87 Difference]: Start difference. First operand 212 states and 540 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:23,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:23,367 INFO L93 Difference]: Finished difference Result 1831 states and 4718 transitions. [2022-11-18 21:02:23,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 21:02:23,369 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 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 [2022-11-18 21:02:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:23,380 INFO L225 Difference]: With dead ends: 1831 [2022-11-18 21:02:23,380 INFO L226 Difference]: Without dead ends: 1831 [2022-11-18 21:02:23,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:02:23,381 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 702 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:23,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 48 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-18 21:02:23,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2022-11-18 21:02:23,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 218. [2022-11-18 21:02:23,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 154 states have (on average 3.5844155844155843) internal successors, (552), 217 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:23,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 552 transitions. [2022-11-18 21:02:23,404 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 552 transitions. Word has length 6 [2022-11-18 21:02:23,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:23,404 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 552 transitions. [2022-11-18 21:02:23,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:23,405 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 552 transitions. [2022-11-18 21:02:23,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 21:02:23,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:23,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 21:02:23,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (10)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:23,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:23,618 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:23,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:23,618 INFO L85 PathProgramCache]: Analyzing trace with hash 539311810, now seen corresponding path program 1 times [2022-11-18 21:02:23,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:23,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458604475] [2022-11-18 21:02:23,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:23,619 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 [2022-11-18 21:02:23,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:23,620 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:23,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (11)] Waiting until timeout for monitored process [2022-11-18 21:02:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:23,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 21:02:23,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:23,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:24,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-11-18 21:02:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:24,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:24,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458604475] [2022-11-18 21:02:24,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458604475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:24,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:24,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 21:02:24,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458764125] [2022-11-18 21:02:24,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:24,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:24,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:24,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:24,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:02:24,119 INFO L87 Difference]: Start difference. First operand 218 states and 552 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:25,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:25,331 INFO L93 Difference]: Finished difference Result 514 states and 1304 transitions. [2022-11-18 21:02:25,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:02:25,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 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 [2022-11-18 21:02:25,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:25,335 INFO L225 Difference]: With dead ends: 514 [2022-11-18 21:02:25,335 INFO L226 Difference]: Without dead ends: 514 [2022-11-18 21:02:25,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:02:25,336 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 156 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:25,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 9 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 21:02:25,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-18 21:02:25,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 253. [2022-11-18 21:02:25,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 189 states have (on average 3.7830687830687832) internal successors, (715), 252 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 715 transitions. [2022-11-18 21:02:25,348 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 715 transitions. Word has length 6 [2022-11-18 21:02:25,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:25,348 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 715 transitions. [2022-11-18 21:02:25,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:25,349 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 715 transitions. [2022-11-18 21:02:25,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 21:02:25,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:25,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 21:02:25,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (11)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:25,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:25,567 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:25,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:25,568 INFO L85 PathProgramCache]: Analyzing trace with hash 539311811, now seen corresponding path program 1 times [2022-11-18 21:02:25,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:25,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827305041] [2022-11-18 21:02:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:25,569 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 [2022-11-18 21:02:25,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:25,570 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:25,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (12)] Waiting until timeout for monitored process [2022-11-18 21:02:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:02:25,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:25,713 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-18 21:02:25,713 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-18 21:02:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:25,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:25,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:25,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827305041] [2022-11-18 21:02:25,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827305041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:25,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:25,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:02:25,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568160326] [2022-11-18 21:02:25,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:25,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:25,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:25,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:25,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:25,740 INFO L87 Difference]: Start difference. First operand 253 states and 715 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:25,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:25,966 INFO L93 Difference]: Finished difference Result 195 states and 520 transitions. [2022-11-18 21:02:25,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:02:25,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 21:02:25,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:25,968 INFO L225 Difference]: With dead ends: 195 [2022-11-18 21:02:25,969 INFO L226 Difference]: Without dead ends: 195 [2022-11-18 21:02:25,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:02:25,969 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:25,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:02:25,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-18 21:02:25,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-11-18 21:02:25,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 157 states have (on average 3.3121019108280256) internal successors, (520), 194 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 520 transitions. [2022-11-18 21:02:25,976 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 520 transitions. Word has length 6 [2022-11-18 21:02:25,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:25,976 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 520 transitions. [2022-11-18 21:02:25,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:25,977 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 520 transitions. [2022-11-18 21:02:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 21:02:25,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:25,977 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-18 21:02:25,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (12)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:26,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:26,189 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:26,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:26,189 INFO L85 PathProgramCache]: Analyzing trace with hash -516595830, now seen corresponding path program 2 times [2022-11-18 21:02:26,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:26,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744368977] [2022-11-18 21:02:26,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:02:26,190 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 [2022-11-18 21:02:26,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:26,191 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:26,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (13)] Waiting until timeout for monitored process [2022-11-18 21:02:26,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:02:26,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:26,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 21:02:26,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:26,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:26,318 INFO L321 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-11-18 21:02:26,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2022-11-18 21:02:26,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-11-18 21:02:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 21:02:26,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:26,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:26,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744368977] [2022-11-18 21:02:26,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744368977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:26,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:26,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 21:02:26,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865248445] [2022-11-18 21:02:26,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:26,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:02:26,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:26,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:02:26,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:26,389 INFO L87 Difference]: Start difference. First operand 195 states and 520 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-11-18 21:02:26,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:26,598 INFO L93 Difference]: Finished difference Result 183 states and 495 transitions. [2022-11-18 21:02:26,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:02:26,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 7 [2022-11-18 21:02:26,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:26,600 INFO L225 Difference]: With dead ends: 183 [2022-11-18 21:02:26,600 INFO L226 Difference]: Without dead ends: 183 [2022-11-18 21:02:26,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:26,601 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:26,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:02:26,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-18 21:02:26,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2022-11-18 21:02:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 149 states have (on average 3.2818791946308723) internal successors, (489), 179 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 489 transitions. [2022-11-18 21:02:26,607 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 489 transitions. Word has length 7 [2022-11-18 21:02:26,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:26,607 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 489 transitions. [2022-11-18 21:02:26,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-11-18 21:02:26,607 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 489 transitions. [2022-11-18 21:02:26,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 21:02:26,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:26,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:26,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (13)] Ended with exit code 0 [2022-11-18 21:02:26,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:26,820 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:26,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:26,820 INFO L85 PathProgramCache]: Analyzing trace with hash -460955813, now seen corresponding path program 1 times [2022-11-18 21:02:26,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:26,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953106629] [2022-11-18 21:02:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:26,821 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 [2022-11-18 21:02:26,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:26,822 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:26,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (14)] Waiting until timeout for monitored process [2022-11-18 21:02:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:26,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 21:02:26,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:26,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:26,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:26,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953106629] [2022-11-18 21:02:26,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953106629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:26,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:26,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:02:26,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758177135] [2022-11-18 21:02:26,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:26,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:02:26,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:26,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:02:26,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:26,939 INFO L87 Difference]: Start difference. First operand 180 states and 489 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:27,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:27,161 INFO L93 Difference]: Finished difference Result 145 states and 377 transitions. [2022-11-18 21:02:27,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:02:27,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 21:02:27,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:27,163 INFO L225 Difference]: With dead ends: 145 [2022-11-18 21:02:27,163 INFO L226 Difference]: Without dead ends: 145 [2022-11-18 21:02:27,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:27,164 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:27,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:02:27,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-18 21:02:27,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-18 21:02:27,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 124 states have (on average 3.0403225806451615) internal successors, (377), 144 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 377 transitions. [2022-11-18 21:02:27,170 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 377 transitions. Word has length 7 [2022-11-18 21:02:27,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:27,170 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 377 transitions. [2022-11-18 21:02:27,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:27,171 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 377 transitions. [2022-11-18 21:02:27,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 21:02:27,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:27,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:27,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (14)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:27,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:27,388 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:27,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:27,388 INFO L85 PathProgramCache]: Analyzing trace with hash -460955812, now seen corresponding path program 1 times [2022-11-18 21:02:27,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:27,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162406344] [2022-11-18 21:02:27,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:27,389 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 [2022-11-18 21:02:27,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:27,390 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:27,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (15)] Waiting until timeout for monitored process [2022-11-18 21:02:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:27,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:02:27,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:27,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:27,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:27,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162406344] [2022-11-18 21:02:27,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162406344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:27,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:27,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:02:27,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835535117] [2022-11-18 21:02:27,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:27,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:27,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:27,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:27,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:27,538 INFO L87 Difference]: Start difference. First operand 145 states and 377 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:27,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:27,750 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2022-11-18 21:02:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:02:27,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 21:02:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:27,751 INFO L225 Difference]: With dead ends: 110 [2022-11-18 21:02:27,751 INFO L226 Difference]: Without dead ends: 110 [2022-11-18 21:02:27,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:27,753 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:27,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:02:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-18 21:02:27,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-11-18 21:02:27,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 99 states have (on average 2.676767676767677) internal successors, (265), 109 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:27,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2022-11-18 21:02:27,757 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 7 [2022-11-18 21:02:27,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:27,757 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2022-11-18 21:02:27,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:27,758 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2022-11-18 21:02:27,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 21:02:27,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:27,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:27,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (15)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:27,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:27,959 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:27,959 INFO L85 PathProgramCache]: Analyzing trace with hash -461201867, now seen corresponding path program 1 times [2022-11-18 21:02:27,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:27,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280813047] [2022-11-18 21:02:27,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:27,960 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 [2022-11-18 21:02:27,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:27,961 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:28,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (16)] Waiting until timeout for monitored process [2022-11-18 21:02:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:28,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 21:02:28,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:28,165 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 21:02:28,166 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 21:02:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:28,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:29,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:29,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280813047] [2022-11-18 21:02:29,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280813047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:29,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:29,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 21:02:29,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662241955] [2022-11-18 21:02:29,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:29,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:29,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:29,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:29,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:02:29,126 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:30,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:30,370 INFO L93 Difference]: Finished difference Result 192 states and 503 transitions. [2022-11-18 21:02:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:02:30,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 21:02:30,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:30,372 INFO L225 Difference]: With dead ends: 192 [2022-11-18 21:02:30,372 INFO L226 Difference]: Without dead ends: 192 [2022-11-18 21:02:30,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:02:30,373 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 63 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:30,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 14 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 100 Unchecked, 0.3s Time] [2022-11-18 21:02:30,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-18 21:02:30,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 156. [2022-11-18 21:02:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 145 states have (on average 2.8758620689655174) internal successors, (417), 155 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 417 transitions. [2022-11-18 21:02:30,380 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 417 transitions. Word has length 7 [2022-11-18 21:02:30,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:30,380 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 417 transitions. [2022-11-18 21:02:30,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:30,380 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 417 transitions. [2022-11-18 21:02:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 21:02:30,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:30,381 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:30,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (16)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:30,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:30,593 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:30,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:30,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1767386133, now seen corresponding path program 2 times [2022-11-18 21:02:30,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:30,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859616706] [2022-11-18 21:02:30,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:02:30,594 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 [2022-11-18 21:02:30,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:30,595 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:30,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (17)] Waiting until timeout for monitored process [2022-11-18 21:02:30,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:02:30,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:30,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 21:02:30,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:30,791 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 21:02:30,791 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 21:02:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 21:02:30,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:30,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:30,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859616706] [2022-11-18 21:02:30,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859616706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:30,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:30,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:02:30,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034807265] [2022-11-18 21:02:30,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:30,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:30,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:30,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:30,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:30,943 INFO L87 Difference]: Start difference. First operand 156 states and 417 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:31,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:31,246 INFO L93 Difference]: Finished difference Result 100 states and 250 transitions. [2022-11-18 21:02:31,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:02:31,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 21:02:31,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:31,248 INFO L225 Difference]: With dead ends: 100 [2022-11-18 21:02:31,248 INFO L226 Difference]: Without dead ends: 100 [2022-11-18 21:02:31,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:02:31,249 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:31,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:02:31,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-18 21:02:31,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 46. [2022-11-18 21:02:31,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 2.159090909090909) internal successors, (95), 45 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 95 transitions. [2022-11-18 21:02:31,252 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 95 transitions. Word has length 9 [2022-11-18 21:02:31,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:31,253 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 95 transitions. [2022-11-18 21:02:31,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 95 transitions. [2022-11-18 21:02:31,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 21:02:31,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:31,254 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-18 21:02:31,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (17)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:31,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:31,465 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:31,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:31,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1790999895, now seen corresponding path program 3 times [2022-11-18 21:02:31,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:31,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505316956] [2022-11-18 21:02:31,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:02:31,467 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 [2022-11-18 21:02:31,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:31,468 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:31,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (18)] Waiting until timeout for monitored process [2022-11-18 21:02:31,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 21:02:31,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:31,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 21:02:31,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:31,800 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 21:02:31,800 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 21:02:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:32,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:36,106 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:02:36,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:36,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505316956] [2022-11-18 21:02:36,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505316956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:36,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:36,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-18 21:02:36,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805489170] [2022-11-18 21:02:36,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:36,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 21:02:36,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:36,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 21:02:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-18 21:02:36,108 INFO L87 Difference]: Start difference. First operand 46 states and 95 transitions. Second operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:55,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:55,633 INFO L93 Difference]: Finished difference Result 718 states and 1559 transitions. [2022-11-18 21:02:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 21:02:55,634 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 21:02:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:55,640 INFO L225 Difference]: With dead ends: 718 [2022-11-18 21:02:55,640 INFO L226 Difference]: Without dead ends: 718 [2022-11-18 21:02:55,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 21:02:55,642 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2115 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:55,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2115 Valid, 240 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-18 21:02:55,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-11-18 21:02:55,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 58. [2022-11-18 21:02:55,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 56 states have (on average 2.125) internal successors, (119), 57 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 119 transitions. [2022-11-18 21:02:55,650 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 119 transitions. Word has length 12 [2022-11-18 21:02:55,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:55,650 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 119 transitions. [2022-11-18 21:02:55,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 119 transitions. [2022-11-18 21:02:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 21:02:55,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:55,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:55,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (18)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:55,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:55,868 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:55,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:55,868 INFO L85 PathProgramCache]: Analyzing trace with hash -435931430, now seen corresponding path program 1 times [2022-11-18 21:02:55,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:55,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815269271] [2022-11-18 21:02:55,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:55,868 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 [2022-11-18 21:02:55,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:55,869 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:55,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (19)] Waiting until timeout for monitored process [2022-11-18 21:02:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:55,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:02:55,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:56,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:56,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:56,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:56,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815269271] [2022-11-18 21:02:56,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815269271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:56,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:56,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 21:02:56,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946678186] [2022-11-18 21:02:56,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:56,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:02:56,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:56,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:02:56,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:56,039 INFO L87 Difference]: Start difference. First operand 58 states and 119 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:56,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:56,156 INFO L93 Difference]: Finished difference Result 85 states and 180 transitions. [2022-11-18 21:02:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:02:56,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-11-18 21:02:56,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:56,158 INFO L225 Difference]: With dead ends: 85 [2022-11-18 21:02:56,158 INFO L226 Difference]: Without dead ends: 80 [2022-11-18 21:02:56,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:02:56,159 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:56,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:02:56,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-18 21:02:56,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-18 21:02:56,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 2.1794871794871793) internal successors, (170), 79 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:56,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 170 transitions. [2022-11-18 21:02:56,163 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 170 transitions. Word has length 15 [2022-11-18 21:02:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:56,163 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 170 transitions. [2022-11-18 21:02:56,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:56,163 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 170 transitions. [2022-11-18 21:02:56,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 21:02:56,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:56,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:56,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (19)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:56,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:56,376 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:56,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:56,376 INFO L85 PathProgramCache]: Analyzing trace with hash 346079797, now seen corresponding path program 1 times [2022-11-18 21:02:56,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:56,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121861444] [2022-11-18 21:02:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:56,376 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 [2022-11-18 21:02:56,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:56,377 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:56,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (20)] Waiting until timeout for monitored process [2022-11-18 21:02:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:02:56,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:56,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:56,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:56,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121861444] [2022-11-18 21:02:56,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121861444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:56,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:56,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:02:56,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276119221] [2022-11-18 21:02:56,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:56,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:56,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:56,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:56,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:56,557 INFO L87 Difference]: Start difference. First operand 80 states and 170 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:56,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:56,799 INFO L93 Difference]: Finished difference Result 84 states and 180 transitions. [2022-11-18 21:02:56,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:02:56,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 21:02:56,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:56,801 INFO L225 Difference]: With dead ends: 84 [2022-11-18 21:02:56,801 INFO L226 Difference]: Without dead ends: 84 [2022-11-18 21:02:56,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:56,802 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:56,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 8 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:02:56,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-18 21:02:56,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2022-11-18 21:02:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 2.230769230769231) internal successors, (174), 79 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 174 transitions. [2022-11-18 21:02:56,805 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 174 transitions. Word has length 16 [2022-11-18 21:02:56,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:56,806 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 174 transitions. [2022-11-18 21:02:56,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:56,806 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 174 transitions. [2022-11-18 21:02:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 21:02:56,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:56,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:56,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (20)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:57,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:57,019 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:57,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:57,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1981705185, now seen corresponding path program 2 times [2022-11-18 21:02:57,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:57,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676391746] [2022-11-18 21:02:57,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:02:57,020 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 [2022-11-18 21:02:57,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:57,022 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:57,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (21)] Waiting until timeout for monitored process [2022-11-18 21:02:57,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:02:57,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:57,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:02:57,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:57,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:57,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:57,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676391746] [2022-11-18 21:02:57,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676391746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:57,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:57,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:02:57,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121817802] [2022-11-18 21:02:57,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:57,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:57,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:57,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:57,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:57,191 INFO L87 Difference]: Start difference. First operand 80 states and 174 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:57,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:57,432 INFO L93 Difference]: Finished difference Result 94 states and 196 transitions. [2022-11-18 21:02:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:02:57,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 21:02:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:57,434 INFO L225 Difference]: With dead ends: 94 [2022-11-18 21:02:57,434 INFO L226 Difference]: Without dead ends: 84 [2022-11-18 21:02:57,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:02:57,434 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:57,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 8 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:02:57,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-18 21:02:57,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2022-11-18 21:02:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 2.27027027027027) internal successors, (168), 75 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 168 transitions. [2022-11-18 21:02:57,438 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 168 transitions. Word has length 16 [2022-11-18 21:02:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:57,438 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 168 transitions. [2022-11-18 21:02:57,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 168 transitions. [2022-11-18 21:02:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 21:02:57,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:57,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:57,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (21)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:57,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:57,652 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:57,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:57,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1103107371, now seen corresponding path program 1 times [2022-11-18 21:02:57,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:57,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189961004] [2022-11-18 21:02:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:57,652 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 [2022-11-18 21:02:57,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:57,653 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:57,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (22)] Waiting until timeout for monitored process [2022-11-18 21:02:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:57,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:02:57,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:57,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:57,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:57,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189961004] [2022-11-18 21:02:57,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189961004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:57,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:57,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-18 21:02:57,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208942553] [2022-11-18 21:02:57,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:57,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:02:57,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:57,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:02:57,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:02:57,850 INFO L87 Difference]: Start difference. First operand 76 states and 168 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:58,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:58,177 INFO L93 Difference]: Finished difference Result 94 states and 210 transitions. [2022-11-18 21:02:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:02:58,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 21:02:58,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:58,179 INFO L225 Difference]: With dead ends: 94 [2022-11-18 21:02:58,179 INFO L226 Difference]: Without dead ends: 94 [2022-11-18 21:02:58,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:02:58,179 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 38 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:58,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 9 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 22 Unchecked, 0.3s Time] [2022-11-18 21:02:58,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-18 21:02:58,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 82. [2022-11-18 21:02:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 2.2) internal successors, (176), 81 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:58,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 176 transitions. [2022-11-18 21:02:58,182 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 176 transitions. Word has length 16 [2022-11-18 21:02:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:58,182 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 176 transitions. [2022-11-18 21:02:58,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:58,183 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 176 transitions. [2022-11-18 21:02:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 21:02:58,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:58,184 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:58,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (22)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:58,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:58,387 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:58,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:58,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1178759413, now seen corresponding path program 2 times [2022-11-18 21:02:58,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:58,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548921983] [2022-11-18 21:02:58,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:02:58,388 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 [2022-11-18 21:02:58,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:58,389 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:58,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (23)] Waiting until timeout for monitored process [2022-11-18 21:02:58,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:02:58,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:58,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 21:02:58,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:58,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:58,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:02:58,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:58,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548921983] [2022-11-18 21:02:58,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548921983] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:02:58,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:58,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-18 21:02:58,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049484049] [2022-11-18 21:02:58,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:58,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:02:58,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:58,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:02:58,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:02:58,830 INFO L87 Difference]: Start difference. First operand 82 states and 176 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:59,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:59,374 INFO L93 Difference]: Finished difference Result 94 states and 205 transitions. [2022-11-18 21:02:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:02:59,375 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 21:02:59,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:59,376 INFO L225 Difference]: With dead ends: 94 [2022-11-18 21:02:59,376 INFO L226 Difference]: Without dead ends: 94 [2022-11-18 21:02:59,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:02:59,377 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 60 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:59,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 23 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 162 Invalid, 0 Unknown, 35 Unchecked, 0.5s Time] [2022-11-18 21:02:59,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-18 21:02:59,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2022-11-18 21:02:59,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 88 states have (on average 2.215909090909091) internal successors, (195), 89 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 195 transitions. [2022-11-18 21:02:59,380 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 195 transitions. Word has length 18 [2022-11-18 21:02:59,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:59,381 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 195 transitions. [2022-11-18 21:02:59,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:02:59,381 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 195 transitions. [2022-11-18 21:02:59,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 21:02:59,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:59,382 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:59,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (23)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:59,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:02:59,594 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:02:59,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:59,595 INFO L85 PathProgramCache]: Analyzing trace with hash -449723622, now seen corresponding path program 3 times [2022-11-18 21:02:59,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:02:59,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921445173] [2022-11-18 21:02:59,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 21:02:59,595 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 [2022-11-18 21:02:59,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:02:59,596 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:02:59,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (24)] Waiting until timeout for monitored process [2022-11-18 21:02:59,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 21:02:59,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:59,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:02:59,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:59,805 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 21:02:59,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:59,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:02:59,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921445173] [2022-11-18 21:02:59,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921445173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:59,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:59,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:02:59,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367152219] [2022-11-18 21:02:59,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:59,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:59,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:02:59,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:59,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:02:59,809 INFO L87 Difference]: Start difference. First operand 90 states and 195 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:00,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:00,020 INFO L93 Difference]: Finished difference Result 150 states and 323 transitions. [2022-11-18 21:03:00,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:03:00,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 21:03:00,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:00,023 INFO L225 Difference]: With dead ends: 150 [2022-11-18 21:03:00,023 INFO L226 Difference]: Without dead ends: 150 [2022-11-18 21:03:00,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:03:00,023 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:00,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 5 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:03:00,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-18 21:03:00,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 114. [2022-11-18 21:03:00,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 2.392857142857143) internal successors, (268), 113 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2022-11-18 21:03:00,028 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 19 [2022-11-18 21:03:00,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:00,029 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2022-11-18 21:03:00,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:00,029 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2022-11-18 21:03:00,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 21:03:00,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:00,030 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:00,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (24)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:00,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:03:00,243 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:03:00,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:00,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1630797696, now seen corresponding path program 4 times [2022-11-18 21:03:00,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:03:00,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325367125] [2022-11-18 21:03:00,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 21:03:00,244 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 [2022-11-18 21:03:00,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:03:00,245 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:03:00,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (25)] Waiting until timeout for monitored process [2022-11-18 21:03:00,384 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 21:03:00,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:03:00,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:03:00,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 21:03:00,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:00,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:03:00,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325367125] [2022-11-18 21:03:00,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325367125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:00,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:00,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:03:00,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234258654] [2022-11-18 21:03:00,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:00,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:03:00,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:03:00,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:03:00,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:03:00,420 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:00,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:00,633 INFO L93 Difference]: Finished difference Result 136 states and 294 transitions. [2022-11-18 21:03:00,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:03:00,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 21:03:00,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:00,635 INFO L225 Difference]: With dead ends: 136 [2022-11-18 21:03:00,635 INFO L226 Difference]: Without dead ends: 126 [2022-11-18 21:03:00,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:03:00,640 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:00,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:03:00,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-18 21:03:00,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 110. [2022-11-18 21:03:00,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 108 states have (on average 2.2777777777777777) internal successors, (246), 109 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:00,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 246 transitions. [2022-11-18 21:03:00,644 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 246 transitions. Word has length 19 [2022-11-18 21:03:00,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:00,645 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 246 transitions. [2022-11-18 21:03:00,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:00,645 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 246 transitions. [2022-11-18 21:03:00,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 21:03:00,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:00,646 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:00,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (25)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:00,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:03:00,860 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:03:00,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2076202138, now seen corresponding path program 5 times [2022-11-18 21:03:00,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:03:00,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924521708] [2022-11-18 21:03:00,861 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 21:03:00,861 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 [2022-11-18 21:03:00,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:03:00,862 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:03:00,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (26)] Waiting until timeout for monitored process [2022-11-18 21:03:01,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 21:03:01,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:03:01,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 21:03:01,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:01,710 INFO L321 Elim1Store]: treesize reduction 568, result has 4.2 percent of original size [2022-11-18 21:03:01,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 20 new quantified variables, introduced 66 case distinctions, treesize of input 838 treesize of output 152 [2022-11-18 21:03:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:03:01,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:03,591 INFO L321 Elim1Store]: treesize reduction 498, result has 21.3 percent of original size [2022-11-18 21:03:03,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 20 new quantified variables, introduced 66 case distinctions, treesize of input 955 treesize of output 282 [2022-11-18 21:03:35,074 WARN L233 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 663 DAG size of output: 17 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 21:03:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 21:03:35,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:03:35,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924521708] [2022-11-18 21:03:35,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924521708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:03:35,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:03:35,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-11-18 21:03:35,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337485679] [2022-11-18 21:03:35,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:35,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:03:35,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:03:35,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:03:35,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=138, Unknown=1, NotChecked=0, Total=182 [2022-11-18 21:03:35,362 INFO L87 Difference]: Start difference. First operand 110 states and 246 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:37,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:37,184 INFO L93 Difference]: Finished difference Result 249 states and 592 transitions. [2022-11-18 21:03:37,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 21:03:37,185 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 21:03:37,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:37,187 INFO L225 Difference]: With dead ends: 249 [2022-11-18 21:03:37,187 INFO L226 Difference]: Without dead ends: 237 [2022-11-18 21:03:37,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=128, Invalid=377, Unknown=1, NotChecked=0, Total=506 [2022-11-18 21:03:37,188 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 34 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:37,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 49 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 89 Unchecked, 0.3s Time] [2022-11-18 21:03:37,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-18 21:03:37,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 149. [2022-11-18 21:03:37,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 147 states have (on average 2.3469387755102042) internal successors, (345), 148 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:37,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 345 transitions. [2022-11-18 21:03:37,193 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 345 transitions. Word has length 19 [2022-11-18 21:03:37,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:37,194 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 345 transitions. [2022-11-18 21:03:37,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:37,194 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 345 transitions. [2022-11-18 21:03:37,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 21:03:37,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:37,195 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:37,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (26)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:37,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:03:37,408 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:03:37,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:37,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1361164524, now seen corresponding path program 6 times [2022-11-18 21:03:37,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:03:37,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722678955] [2022-11-18 21:03:37,409 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 21:03:37,409 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 [2022-11-18 21:03:37,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:03:37,410 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:03:37,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (27)] Waiting until timeout for monitored process [2022-11-18 21:03:37,530 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 21:03:37,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:03:37,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:03:37,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 21:03:37,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:37,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 21:03:37,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722678955] [2022-11-18 21:03:37,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722678955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:37,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:37,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:03:37,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081275541] [2022-11-18 21:03:37,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:37,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:03:37,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 21:03:37,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:03:37,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:03:37,599 INFO L87 Difference]: Start difference. First operand 149 states and 345 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:37,882 INFO L93 Difference]: Finished difference Result 163 states and 376 transitions. [2022-11-18 21:03:37,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:03:37,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 21:03:37,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:37,883 INFO L225 Difference]: With dead ends: 163 [2022-11-18 21:03:37,884 INFO L226 Difference]: Without dead ends: 163 [2022-11-18 21:03:37,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:03:37,884 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:37,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:03:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-18 21:03:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2022-11-18 21:03:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 104 states have (on average 2.25) internal successors, (234), 105 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:37,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 234 transitions. [2022-11-18 21:03:37,889 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 234 transitions. Word has length 19 [2022-11-18 21:03:37,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:37,889 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 234 transitions. [2022-11-18 21:03:37,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:03:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 234 transitions. [2022-11-18 21:03:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 21:03:37,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:37,890 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:37,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (27)] Ended with exit code 0 [2022-11-18 21:03:38,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 21:03:38,103 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2022-11-18 21:03:38,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:38,103 INFO L85 PathProgramCache]: Analyzing trace with hash 294856949, now seen corresponding path program 1 times [2022-11-18 21:03:38,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 21:03:38,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221803018] [2022-11-18 21:03:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:38,104 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 [2022-11-18 21:03:38,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 21:03:38,105 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 21:03:38,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32e074a1-1080-47db-9249-fe759dd60dc5/bin/uautomizer-TMbwUNV5ro/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 (28)] Waiting until timeout for monitored process [2022-11-18 21:03:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:38,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:03:38,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:43,176 INFO L321 Elim1Store]: treesize reduction 774, result has 21.4 percent of original size [2022-11-18 21:03:43,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 28 new quantified variables, introduced 120 case distinctions, treesize of input 5313 treesize of output 394 [2022-11-18 21:08:47,349 WARN L233 SmtUtils]: Spent 9.13s on a formula simplification that was a NOOP. DAG size: 2699 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 21:12:29,613 WARN L233 SmtUtils]: Spent 15.71s on a formula simplification. DAG size of input: 2696 DAG size of output: 2696 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)