./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a --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 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 --- 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-b5237d8 [2022-11-21 17:08:48,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:08:48,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:08:48,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:08:48,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:08:48,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:08:48,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:08:48,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:08:48,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:08:48,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:08:48,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:08:48,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:08:48,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:08:48,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:08:48,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:08:48,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:08:48,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:08:48,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:08:48,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:08:48,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:08:48,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:08:48,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:08:48,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:08:48,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:08:48,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:08:48,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:08:48,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:08:48,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:08:48,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:08:48,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:08:48,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:08:48,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:08:48,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:08:48,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:08:48,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:08:48,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:08:48,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:08:48,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:08:48,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:08:48,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:08:48,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:08:48,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 17:08:48,549 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:08:48,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:08:48,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:08:48,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:08:48,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:08:48,552 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:08:48,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:08:48,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:08:48,553 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:08:48,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:08:48,554 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:08:48,555 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:08:48,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:08:48,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:08:48,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:08:48,556 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 17:08:48,556 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 17:08:48,556 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 17:08:48,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:08:48,557 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 17:08:48,557 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:08:48,557 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:08:48,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:08:48,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:08:48,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:08:48,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:08:48,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:08:48,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:08:48,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:08:48,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:08:48,561 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_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 [2022-11-21 17:08:48,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:08:48,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:08:48,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:08:48,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:08:48,908 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:08:48,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-21 17:08:51,938 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:08:52,129 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:08:52,129 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-21 17:08:52,136 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/data/3453e837e/8c87d255495542a2ab866e03fb475c56/FLAG305e327d7 [2022-11-21 17:08:52,151 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/data/3453e837e/8c87d255495542a2ab866e03fb475c56 [2022-11-21 17:08:52,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:08:52,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:08:52,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:08:52,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:08:52,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:08:52,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:08:52" (1/1) ... [2022-11-21 17:08:52,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3231b55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:52, skipping insertion in model container [2022-11-21 17:08:52,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:08:52" (1/1) ... [2022-11-21 17:08:52,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:08:52,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:08:52,419 WARN L237 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_0c3cf61c-d810-44a4-9425-7373f40da45a/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-21 17:08:52,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:08:52,457 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) [2022-11-21 17:08:52,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@63ad22ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:52, skipping insertion in model container [2022-11-21 17:08:52,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:08:52,460 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-21 17:08:52,462 INFO L158 Benchmark]: Toolchain (without parser) took 305.50ms. Allocated memory is still 155.2MB. Free memory was 109.0MB in the beginning and 99.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 17:08:52,463 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 104.9MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:08:52,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.95ms. Allocated memory is still 155.2MB. Free memory was 108.5MB in the beginning and 99.0MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 17:08:52,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 104.9MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.95ms. Allocated memory is still 155.2MB. Free memory was 108.5MB in the beginning and 99.0MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 124]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a --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 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 --- 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-b5237d8 [2022-11-21 17:08:54,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:08:54,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:08:54,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:08:54,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:08:54,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:08:54,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:08:54,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:08:54,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:08:54,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:08:54,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:08:54,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:08:54,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:08:54,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:08:54,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:08:54,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:08:54,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:08:54,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:08:54,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:08:54,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:08:54,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:08:54,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:08:54,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:08:54,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:08:54,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:08:54,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:08:54,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:08:54,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:08:54,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:08:54,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:08:54,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:08:54,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:08:54,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:08:54,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:08:54,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:08:54,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:08:54,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:08:54,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:08:54,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:08:54,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:08:54,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:08:54,885 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-21 17:08:54,926 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:08:54,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:08:54,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:08:54,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:08:54,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:08:54,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:08:54,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:08:54,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:08:54,934 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:08:54,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:08:54,936 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:08:54,936 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:08:54,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:08:54,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:08:54,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:08:54,938 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 17:08:54,938 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 17:08:54,938 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 17:08:54,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:08:54,939 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 17:08:54,939 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 17:08:54,939 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 17:08:54,940 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:08:54,940 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:08:54,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:08:54,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:08:54,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:08:54,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:08:54,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:08:54,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:08:54,942 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 17:08:54,943 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 17:08:54,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 17:08:54,943 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_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 [2022-11-21 17:08:55,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:08:55,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:08:55,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:08:55,389 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:08:55,390 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:08:55,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-21 17:08:58,470 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:08:58,727 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:08:58,728 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-21 17:08:58,738 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/data/c76260dac/1cdee2b5cb1c494c80780f68dc3ca904/FLAGe974ee0db [2022-11-21 17:08:58,755 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/data/c76260dac/1cdee2b5cb1c494c80780f68dc3ca904 [2022-11-21 17:08:58,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:08:58,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:08:58,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:08:58,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:08:58,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:08:58,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:08:58" (1/1) ... [2022-11-21 17:08:58,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196c3c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:58, skipping insertion in model container [2022-11-21 17:08:58,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:08:58" (1/1) ... [2022-11-21 17:08:58,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:08:58,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:08:59,083 WARN L237 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_0c3cf61c-d810-44a4-9425-7373f40da45a/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-21 17:08:59,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:08:59,126 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-21 17:08:59,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:08:59,191 WARN L237 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_0c3cf61c-d810-44a4-9425-7373f40da45a/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-21 17:08:59,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:08:59,217 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:08:59,261 WARN L237 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_0c3cf61c-d810-44a4-9425-7373f40da45a/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-21 17:08:59,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:08:59,285 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:08:59,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:59 WrapperNode [2022-11-21 17:08:59,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:08:59,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:08:59,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:08:59,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:08:59,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:59" (1/1) ... [2022-11-21 17:08:59,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:59" (1/1) ... [2022-11-21 17:08:59,347 INFO L138 Inliner]: procedures = 27, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 118 [2022-11-21 17:08:59,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:08:59,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:08:59,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:08:59,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:08:59,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:59" (1/1) ... [2022-11-21 17:08:59,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:59" (1/1) ... [2022-11-21 17:08:59,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:59" (1/1) ... [2022-11-21 17:08:59,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:59" (1/1) ... [2022-11-21 17:08:59,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:59" (1/1) ... [2022-11-21 17:08:59,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:59" (1/1) ... [2022-11-21 17:08:59,379 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:59" (1/1) ... [2022-11-21 17:08:59,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:59" (1/1) ... [2022-11-21 17:08:59,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:08:59,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:08:59,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:08:59,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:08:59,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:59" (1/1) ... [2022-11-21 17:08:59,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:08:59,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:08:59,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:08:59,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:08:59,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:08:59,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 17:08:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:08:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-21 17:08:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 17:08:59,472 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 17:08:59,472 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 17:08:59,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 17:08:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 17:08:59,478 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 17:08:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 17:08:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 17:08:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:08:59,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:08:59,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:08:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:08:59,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-21 17:08:59,482 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:08:59,625 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:08:59,627 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:09:00,309 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:09:00,406 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:09:00,406 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 17:09:00,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:09:00 BoogieIcfgContainer [2022-11-21 17:09:00,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:09:00,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:09:00,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:09:00,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:09:00,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:08:58" (1/3) ... [2022-11-21 17:09:00,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcd2a25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:09:00, skipping insertion in model container [2022-11-21 17:09:00,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:08:59" (2/3) ... [2022-11-21 17:09:00,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcd2a25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:09:00, skipping insertion in model container [2022-11-21 17:09:00,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:09:00" (3/3) ... [2022-11-21 17:09:00,418 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2022-11-21 17:09:00,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:09:00,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-21 17:09:00,438 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:09:00,545 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 17:09:00,596 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 17:09:00,624 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 204 transitions, 432 flow [2022-11-21 17:09:00,631 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 204 transitions, 432 flow [2022-11-21 17:09:00,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 204 transitions, 432 flow [2022-11-21 17:09:00,754 INFO L130 PetriNetUnfolder]: 12/201 cut-off events. [2022-11-21 17:09:00,754 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 17:09:00,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 201 events. 12/201 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 221 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2022-11-21 17:09:00,769 INFO L119 LiptonReduction]: Number of co-enabled transitions 2358 [2022-11-21 17:09:33,987 INFO L134 LiptonReduction]: Checked pairs total: 4497 [2022-11-21 17:09:33,987 INFO L136 LiptonReduction]: Total number of compositions: 221 [2022-11-21 17:09:33,995 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 57 transitions, 138 flow [2022-11-21 17:09:34,126 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1340 states, 1058 states have (on average 3.879962192816635) internal successors, (4105), 1339 states have internal predecessors, (4105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:34,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:09:34,151 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;@5d908f59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:09:34,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2022-11-21 17:09:34,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 1340 states, 1058 states have (on average 3.879962192816635) internal successors, (4105), 1339 states have internal predecessors, (4105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:34,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 17:09:34,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:34,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 17:09:34,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:34,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:34,178 INFO L85 PathProgramCache]: Analyzing trace with hash 26017, now seen corresponding path program 1 times [2022-11-21 17:09:34,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:34,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358635449] [2022-11-21 17:09:34,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:34,191 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 [2022-11-21 17:09:34,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:34,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:34,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:34,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:09:34,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:34,650 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:09:34,650 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:09:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:09:34,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:09:34,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:34,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358635449] [2022-11-21 17:09:34,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358635449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:09:34,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:09:34,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:09:34,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004105566] [2022-11-21 17:09:34,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:09:34,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:09:34,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:34,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:09:34,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:09:34,747 INFO L87 Difference]: Start difference. First operand has 1340 states, 1058 states have (on average 3.879962192816635) internal successors, (4105), 1339 states have internal predecessors, (4105), 0 states have call successors, (0), 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) [2022-11-21 17:09:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:35,054 INFO L93 Difference]: Finished difference Result 882 states and 2679 transitions. [2022-11-21 17:09:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:09:35,056 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 [2022-11-21 17:09:35,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:35,075 INFO L225 Difference]: With dead ends: 882 [2022-11-21 17:09:35,075 INFO L226 Difference]: Without dead ends: 882 [2022-11-21 17:09:35,076 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 [2022-11-21 17:09:35,080 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:35,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:09:35,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-11-21 17:09:35,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 882. [2022-11-21 17:09:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 730 states have (on average 3.66986301369863) internal successors, (2679), 881 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:35,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 2679 transitions. [2022-11-21 17:09:35,259 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 2679 transitions. Word has length 2 [2022-11-21 17:09:35,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:35,260 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 2679 transitions. [2022-11-21 17:09:35,261 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) [2022-11-21 17:09:35,261 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2679 transitions. [2022-11-21 17:09:35,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 17:09:35,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:35,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 17:09:35,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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)] Ended with exit code 0 [2022-11-21 17:09:35,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:35,474 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:35,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:35,475 INFO L85 PathProgramCache]: Analyzing trace with hash 26018, now seen corresponding path program 1 times [2022-11-21 17:09:35,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:35,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659385603] [2022-11-21 17:09:35,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:35,476 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 [2022-11-21 17:09:35,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:35,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:35,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:35,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:09:35,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:35,726 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-21 17:09:35,726 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-21 17:09:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:09:35,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:09:35,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:35,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659385603] [2022-11-21 17:09:35,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659385603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:09:35,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:09:35,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:09:35,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144792170] [2022-11-21 17:09:35,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:09:35,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:09:35,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:35,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:09:35,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:09:35,747 INFO L87 Difference]: Start difference. First operand 882 states and 2679 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) [2022-11-21 17:09:36,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:36,017 INFO L93 Difference]: Finished difference Result 880 states and 2677 transitions. [2022-11-21 17:09:36,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:09:36,018 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 [2022-11-21 17:09:36,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:36,024 INFO L225 Difference]: With dead ends: 880 [2022-11-21 17:09:36,024 INFO L226 Difference]: Without dead ends: 880 [2022-11-21 17:09:36,024 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 [2022-11-21 17:09:36,031 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:36,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 2 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:09:36,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-11-21 17:09:36,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2022-11-21 17:09:36,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 730 states have (on average 3.6671232876712327) internal successors, (2677), 879 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:36,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2677 transitions. [2022-11-21 17:09:36,076 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2677 transitions. Word has length 2 [2022-11-21 17:09:36,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:36,077 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 2677 transitions. [2022-11-21 17:09:36,077 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) [2022-11-21 17:09:36,077 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2677 transitions. [2022-11-21 17:09:36,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 17:09:36,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:36,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 17:09:36,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:36,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:36,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:36,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:36,290 INFO L85 PathProgramCache]: Analyzing trace with hash 25880, now seen corresponding path program 1 times [2022-11-21 17:09:36,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:36,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888675043] [2022-11-21 17:09:36,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:36,291 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 [2022-11-21 17:09:36,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:36,293 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:36,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:36,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 17:09:36,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:36,596 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:09:36,597 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:09:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:09:36,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:09:36,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:36,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888675043] [2022-11-21 17:09:36,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888675043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:09:36,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:09:36,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:09:36,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254278991] [2022-11-21 17:09:36,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:09:36,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:09:36,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:36,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:09:36,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:09:36,646 INFO L87 Difference]: Start difference. First operand 880 states and 2677 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) [2022-11-21 17:09:37,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:37,086 INFO L93 Difference]: Finished difference Result 1758 states and 5352 transitions. [2022-11-21 17:09:37,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:09:37,087 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 [2022-11-21 17:09:37,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:37,098 INFO L225 Difference]: With dead ends: 1758 [2022-11-21 17:09:37,098 INFO L226 Difference]: Without dead ends: 1758 [2022-11-21 17:09:37,099 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 [2022-11-21 17:09:37,100 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 42 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:37,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 4 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 17:09:37,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2022-11-21 17:09:37,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 881. [2022-11-21 17:09:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 731 states have (on average 3.667578659370725) internal successors, (2681), 880 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 2681 transitions. [2022-11-21 17:09:37,144 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 2681 transitions. Word has length 2 [2022-11-21 17:09:37,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:37,144 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 2681 transitions. [2022-11-21 17:09:37,144 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) [2022-11-21 17:09:37,144 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 2681 transitions. [2022-11-21 17:09:37,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 17:09:37,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:37,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 17:09:37,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:09:37,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:37,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:37,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:37,357 INFO L85 PathProgramCache]: Analyzing trace with hash 26043, now seen corresponding path program 1 times [2022-11-21 17:09:37,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:37,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76451476] [2022-11-21 17:09:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:37,358 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 [2022-11-21 17:09:37,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:37,359 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:37,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:37,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 17:09:37,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:09:37,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:09:37,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:37,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76451476] [2022-11-21 17:09:37,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76451476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:09:37,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:09:37,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:09:37,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527611007] [2022-11-21 17:09:37,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:09:37,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:09:37,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:37,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:09:37,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:09:37,462 INFO L87 Difference]: Start difference. First operand 881 states and 2681 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) [2022-11-21 17:09:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:37,741 INFO L93 Difference]: Finished difference Result 881 states and 2678 transitions. [2022-11-21 17:09:37,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:09:37,742 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 [2022-11-21 17:09:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:37,748 INFO L225 Difference]: With dead ends: 881 [2022-11-21 17:09:37,748 INFO L226 Difference]: Without dead ends: 881 [2022-11-21 17:09:37,748 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 [2022-11-21 17:09:37,749 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:37,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:09:37,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-11-21 17:09:37,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 881. [2022-11-21 17:09:37,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 731 states have (on average 3.6634746922024624) internal successors, (2678), 880 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:37,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 2678 transitions. [2022-11-21 17:09:37,782 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 2678 transitions. Word has length 2 [2022-11-21 17:09:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:37,782 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 2678 transitions. [2022-11-21 17:09:37,783 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) [2022-11-21 17:09:37,783 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 2678 transitions. [2022-11-21 17:09:37,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 17:09:37,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:37,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 17:09:37,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:37,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:37,995 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:37,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:37,995 INFO L85 PathProgramCache]: Analyzing trace with hash 806677, now seen corresponding path program 1 times [2022-11-21 17:09:37,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:37,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4865677] [2022-11-21 17:09:37,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:37,996 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 [2022-11-21 17:09:37,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:37,997 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:37,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:38,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:09:38,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:38,214 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:09:38,215 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:09:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:09:38,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:09:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:09:38,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:38,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4865677] [2022-11-21 17:09:38,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4865677] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:09:38,541 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:09:38,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-21 17:09:38,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471090714] [2022-11-21 17:09:38,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:09:38,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:09:38,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:38,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:09:38,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:09:38,542 INFO L87 Difference]: Start difference. First operand 881 states and 2678 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) [2022-11-21 17:09:39,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:39,409 INFO L93 Difference]: Finished difference Result 1761 states and 5361 transitions. [2022-11-21 17:09:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:09:39,410 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 [2022-11-21 17:09:39,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:39,423 INFO L225 Difference]: With dead ends: 1761 [2022-11-21 17:09:39,423 INFO L226 Difference]: Without dead ends: 1761 [2022-11-21 17:09:39,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:09:39,424 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 171 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:39,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 6 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 17:09:39,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2022-11-21 17:09:39,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 884. [2022-11-21 17:09:39,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 734 states have (on average 3.664850136239782) internal successors, (2690), 883 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:39,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2690 transitions. [2022-11-21 17:09:39,467 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2690 transitions. Word has length 3 [2022-11-21 17:09:39,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:39,467 INFO L495 AbstractCegarLoop]: Abstraction has 884 states and 2690 transitions. [2022-11-21 17:09:39,468 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) [2022-11-21 17:09:39,468 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2690 transitions. [2022-11-21 17:09:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 17:09:39,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:39,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 17:09:39,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:39,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:39,680 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:39,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:39,681 INFO L85 PathProgramCache]: Analyzing trace with hash 806840, now seen corresponding path program 1 times [2022-11-21 17:09:39,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:39,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548759030] [2022-11-21 17:09:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:39,682 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 [2022-11-21 17:09:39,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:39,683 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:39,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:39,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:09:39,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:39,895 INFO L321 Elim1Store]: treesize reduction 115, result has 16.1 percent of original size [2022-11-21 17:09:39,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 47 [2022-11-21 17:09:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:09:40,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:09:40,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:40,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548759030] [2022-11-21 17:09:40,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548759030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:09:40,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:09:40,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:09:40,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174350371] [2022-11-21 17:09:40,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:09:40,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:09:40,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:40,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:09:40,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:09:40,011 INFO L87 Difference]: Start difference. First operand 884 states and 2690 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) [2022-11-21 17:09:40,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:40,274 INFO L93 Difference]: Finished difference Result 755 states and 2238 transitions. [2022-11-21 17:09:40,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:09:40,275 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 [2022-11-21 17:09:40,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:40,280 INFO L225 Difference]: With dead ends: 755 [2022-11-21 17:09:40,280 INFO L226 Difference]: Without dead ends: 755 [2022-11-21 17:09:40,280 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 [2022-11-21 17:09:40,283 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:40,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:09:40,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-21 17:09:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 755. [2022-11-21 17:09:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 631 states have (on average 3.5467511885895404) internal successors, (2238), 754 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 2238 transitions. [2022-11-21 17:09:40,310 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 2238 transitions. Word has length 3 [2022-11-21 17:09:40,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:40,311 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 2238 transitions. [2022-11-21 17:09:40,311 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) [2022-11-21 17:09:40,312 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 2238 transitions. [2022-11-21 17:09:40,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 17:09:40,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:40,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 17:09:40,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:40,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:40,524 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:40,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:40,525 INFO L85 PathProgramCache]: Analyzing trace with hash 806842, now seen corresponding path program 1 times [2022-11-21 17:09:40,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:40,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748148645] [2022-11-21 17:09:40,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:40,527 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 [2022-11-21 17:09:40,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:40,529 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:40,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:40,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 17:09:40,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:40,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:09:40,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:09:40,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:09:40,770 INFO L321 Elim1Store]: treesize reduction 36, result has 43.8 percent of original size [2022-11-21 17:09:40,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 35 [2022-11-21 17:09:40,793 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-21 17:09:40,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-21 17:09:40,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:09:40,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:09:40,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:40,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748148645] [2022-11-21 17:09:40,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748148645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:09:40,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:09:40,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:09:40,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878070297] [2022-11-21 17:09:40,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:09:40,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:09:40,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:40,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:09:40,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:09:40,896 INFO L87 Difference]: Start difference. First operand 755 states and 2238 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) [2022-11-21 17:09:41,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:41,122 INFO L93 Difference]: Finished difference Result 626 states and 1786 transitions. [2022-11-21 17:09:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:09:41,123 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 [2022-11-21 17:09:41,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:41,127 INFO L225 Difference]: With dead ends: 626 [2022-11-21 17:09:41,127 INFO L226 Difference]: Without dead ends: 626 [2022-11-21 17:09:41,127 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 [2022-11-21 17:09:41,128 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:41,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:09:41,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-11-21 17:09:41,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2022-11-21 17:09:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 528 states have (on average 3.382575757575758) internal successors, (1786), 625 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1786 transitions. [2022-11-21 17:09:41,148 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1786 transitions. Word has length 3 [2022-11-21 17:09:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:41,149 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 1786 transitions. [2022-11-21 17:09:41,149 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) [2022-11-21 17:09:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1786 transitions. [2022-11-21 17:09:41,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:09:41,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:41,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:09:41,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:41,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:41,361 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:41,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:41,362 INFO L85 PathProgramCache]: Analyzing trace with hash 775392015, now seen corresponding path program 1 times [2022-11-21 17:09:41,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:41,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37073187] [2022-11-21 17:09:41,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:41,363 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 [2022-11-21 17:09:41,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:41,364 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:41,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:41,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:09:41,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:41,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:09:41,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:09:41,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:41,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37073187] [2022-11-21 17:09:41,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37073187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:09:41,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:09:41,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:09:41,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145858456] [2022-11-21 17:09:41,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:09:41,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:09:41,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:41,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:09:41,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:09:41,479 INFO L87 Difference]: Start difference. First operand 626 states and 1786 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:41,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:41,656 INFO L93 Difference]: Finished difference Result 378 states and 1058 transitions. [2022-11-21 17:09:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:09:41,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-21 17:09:41,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:41,659 INFO L225 Difference]: With dead ends: 378 [2022-11-21 17:09:41,659 INFO L226 Difference]: Without dead ends: 378 [2022-11-21 17:09:41,659 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 [2022-11-21 17:09:41,659 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:41,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:09:41,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-21 17:09:41,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2022-11-21 17:09:41,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 336 states have (on average 3.1488095238095237) internal successors, (1058), 377 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1058 transitions. [2022-11-21 17:09:41,672 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1058 transitions. Word has length 5 [2022-11-21 17:09:41,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:41,673 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 1058 transitions. [2022-11-21 17:09:41,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1058 transitions. [2022-11-21 17:09:41,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:09:41,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:41,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:09:41,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:41,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:41,886 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:41,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:41,886 INFO L85 PathProgramCache]: Analyzing trace with hash 775392016, now seen corresponding path program 1 times [2022-11-21 17:09:41,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:41,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011107264] [2022-11-21 17:09:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:41,887 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 [2022-11-21 17:09:41,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:41,888 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:41,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:41,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:09:41,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:09:42,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:09:42,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:42,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011107264] [2022-11-21 17:09:42,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011107264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:09:42,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:09:42,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:09:42,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540210350] [2022-11-21 17:09:42,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:09:42,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:09:42,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:42,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:09:42,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:09:42,015 INFO L87 Difference]: Start difference. First operand 378 states and 1058 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:42,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:42,231 INFO L93 Difference]: Finished difference Result 278 states and 766 transitions. [2022-11-21 17:09:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:09:42,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-21 17:09:42,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:42,234 INFO L225 Difference]: With dead ends: 278 [2022-11-21 17:09:42,234 INFO L226 Difference]: Without dead ends: 278 [2022-11-21 17:09:42,234 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 [2022-11-21 17:09:42,235 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:42,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:09:42,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-21 17:09:42,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-11-21 17:09:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 255 states have (on average 3.003921568627451) internal successors, (766), 277 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 766 transitions. [2022-11-21 17:09:42,244 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 766 transitions. Word has length 5 [2022-11-21 17:09:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:42,244 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 766 transitions. [2022-11-21 17:09:42,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:42,244 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 766 transitions. [2022-11-21 17:09:42,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:09:42,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:42,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:09:42,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:42,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:42,446 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:42,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash 775392215, now seen corresponding path program 1 times [2022-11-21 17:09:42,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:42,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729131402] [2022-11-21 17:09:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:42,447 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 [2022-11-21 17:09:42,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:42,448 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:42,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:42,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 17:09:42,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:42,657 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-21 17:09:42,658 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 4 case distinctions, treesize of input 29 treesize of output 40 [2022-11-21 17:09:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:09:42,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:09:42,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:42,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729131402] [2022-11-21 17:09:42,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729131402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:09:42,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:09:42,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:09:42,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348166759] [2022-11-21 17:09:42,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:09:42,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:09:42,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:42,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:09:42,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:09:42,778 INFO L87 Difference]: Start difference. First operand 278 states and 766 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) [2022-11-21 17:09:42,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:42,939 INFO L93 Difference]: Finished difference Result 263 states and 731 transitions. [2022-11-21 17:09:42,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:09:42,939 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 [2022-11-21 17:09:42,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:42,942 INFO L225 Difference]: With dead ends: 263 [2022-11-21 17:09:42,942 INFO L226 Difference]: Without dead ends: 263 [2022-11-21 17:09:42,942 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 [2022-11-21 17:09:42,943 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:42,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:09:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-11-21 17:09:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2022-11-21 17:09:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 244 states have (on average 2.9959016393442623) internal successors, (731), 262 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 731 transitions. [2022-11-21 17:09:42,952 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 731 transitions. Word has length 5 [2022-11-21 17:09:42,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:42,952 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 731 transitions. [2022-11-21 17:09:42,952 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) [2022-11-21 17:09:42,952 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 731 transitions. [2022-11-21 17:09:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:09:42,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:42,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:09:42,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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)] Ended with exit code 0 [2022-11-21 17:09:43,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:43,171 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:43,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash 775392216, now seen corresponding path program 1 times [2022-11-21 17:09:43,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:43,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265784639] [2022-11-21 17:09:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:43,172 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 [2022-11-21 17:09:43,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:43,173 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:43,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:43,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 17:09:43,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:43,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:09:43,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:09:43,421 INFO L321 Elim1Store]: treesize reduction 49, result has 38.8 percent of original size [2022-11-21 17:09:43,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 38 [2022-11-21 17:09:43,436 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 14 treesize of output 12 [2022-11-21 17:09:43,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:09:43,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:09:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:09:43,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:43,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265784639] [2022-11-21 17:09:43,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265784639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:09:43,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:09:43,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-21 17:09:43,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851358289] [2022-11-21 17:09:43,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:09:43,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:09:43,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:43,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:09:43,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:09:43,931 INFO L87 Difference]: Start difference. First operand 263 states and 731 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) [2022-11-21 17:09:44,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:44,433 INFO L93 Difference]: Finished difference Result 489 states and 1381 transitions. [2022-11-21 17:09:44,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:09:44,434 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 [2022-11-21 17:09:44,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:44,436 INFO L225 Difference]: With dead ends: 489 [2022-11-21 17:09:44,436 INFO L226 Difference]: Without dead ends: 489 [2022-11-21 17:09:44,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:09:44,436 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:44,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 17:09:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-11-21 17:09:44,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 248. [2022-11-21 17:09:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 233 states have (on average 2.9871244635193133) internal successors, (696), 247 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 696 transitions. [2022-11-21 17:09:44,446 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 696 transitions. Word has length 5 [2022-11-21 17:09:44,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:44,446 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 696 transitions. [2022-11-21 17:09:44,446 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) [2022-11-21 17:09:44,446 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 696 transitions. [2022-11-21 17:09:44,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 17:09:44,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:44,447 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-21 17:09:44,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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)] Ended with exit code 0 [2022-11-21 17:09:44,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:44,659 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:44,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:44,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1733723048, now seen corresponding path program 2 times [2022-11-21 17:09:44,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:44,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903614289] [2022-11-21 17:09:44,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:09:44,661 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 [2022-11-21 17:09:44,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:44,662 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:44,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:44,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:09:44,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:09:44,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 17:09:44,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:44,913 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:09:44,914 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:09:45,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:09:45,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:09:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:09:45,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:45,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903614289] [2022-11-21 17:09:45,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903614289] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:09:45,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:09:45,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 17:09:45,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156335533] [2022-11-21 17:09:45,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:09:45,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:09:45,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:45,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:09:45,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:09:45,839 INFO L87 Difference]: Start difference. First operand 248 states and 696 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) [2022-11-21 17:09:49,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:49,835 INFO L93 Difference]: Finished difference Result 1941 states and 5503 transitions. [2022-11-21 17:09:49,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:09:49,836 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 [2022-11-21 17:09:49,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:49,847 INFO L225 Difference]: With dead ends: 1941 [2022-11-21 17:09:49,848 INFO L226 Difference]: Without dead ends: 1941 [2022-11-21 17:09:49,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:09:49,849 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 673 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:49,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 0 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-21 17:09:49,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2022-11-21 17:09:49,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 254. [2022-11-21 17:09:49,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 239 states have (on average 2.9623430962343096) internal successors, (708), 253 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 708 transitions. [2022-11-21 17:09:49,889 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 708 transitions. Word has length 6 [2022-11-21 17:09:49,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:49,889 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 708 transitions. [2022-11-21 17:09:49,890 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) [2022-11-21 17:09:49,890 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 708 transitions. [2022-11-21 17:09:49,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 17:09:49,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:49,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:09:49,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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)] Forceful destruction successful, exit code 0 [2022-11-21 17:09:50,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:50,102 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:50,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:50,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2122406458, now seen corresponding path program 1 times [2022-11-21 17:09:50,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:50,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797914426] [2022-11-21 17:09:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:50,103 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 [2022-11-21 17:09:50,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:50,104 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:50,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:50,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:09:50,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:09:50,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:09:50,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:50,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797914426] [2022-11-21 17:09:50,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797914426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:09:50,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:09:50,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:09:50,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851163414] [2022-11-21 17:09:50,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:09:50,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:09:50,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:50,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:09:50,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:09:50,276 INFO L87 Difference]: Start difference. First operand 254 states and 708 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-11-21 17:09:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:50,598 INFO L93 Difference]: Finished difference Result 368 states and 1020 transitions. [2022-11-21 17:09:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:09:50,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 [2022-11-21 17:09:50,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:50,601 INFO L225 Difference]: With dead ends: 368 [2022-11-21 17:09:50,601 INFO L226 Difference]: Without dead ends: 368 [2022-11-21 17:09:50,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:09:50,602 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 100 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:50,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 0 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:09:50,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-21 17:09:50,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 296. [2022-11-21 17:09:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 281 states have (on average 3.110320284697509) internal successors, (874), 295 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 874 transitions. [2022-11-21 17:09:50,612 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 874 transitions. Word has length 7 [2022-11-21 17:09:50,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:50,612 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 874 transitions. [2022-11-21 17:09:50,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-11-21 17:09:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 874 transitions. [2022-11-21 17:09:50,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 17:09:50,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:50,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:09:50,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:50,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:50,825 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:50,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:50,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2122593422, now seen corresponding path program 1 times [2022-11-21 17:09:50,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:50,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778853631] [2022-11-21 17:09:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:50,826 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 [2022-11-21 17:09:50,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:50,827 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:50,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:50,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 17:09:50,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:51,030 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-21 17:09:51,031 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 3 case distinctions, treesize of input 15 treesize of output 29 [2022-11-21 17:09:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:09:51,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:09:51,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:51,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778853631] [2022-11-21 17:09:51,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778853631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:09:51,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:09:51,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:09:51,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892195243] [2022-11-21 17:09:51,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:09:51,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:09:51,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:51,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:09:51,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:09:51,066 INFO L87 Difference]: Start difference. First operand 296 states and 874 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-11-21 17:09:51,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:51,212 INFO L93 Difference]: Finished difference Result 264 states and 776 transitions. [2022-11-21 17:09:51,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:09:51,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2022-11-21 17:09:51,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:51,214 INFO L225 Difference]: With dead ends: 264 [2022-11-21 17:09:51,215 INFO L226 Difference]: Without dead ends: 264 [2022-11-21 17:09:51,215 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 [2022-11-21 17:09:51,215 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:51,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:09:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-21 17:09:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2022-11-21 17:09:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 254 states have (on average 3.0551181102362204) internal successors, (776), 263 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 776 transitions. [2022-11-21 17:09:51,225 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 776 transitions. Word has length 7 [2022-11-21 17:09:51,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:51,225 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 776 transitions. [2022-11-21 17:09:51,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2022-11-21 17:09:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 776 transitions. [2022-11-21 17:09:51,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 17:09:51,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:51,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:09:51,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:51,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:51,440 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:51,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:51,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2122593423, now seen corresponding path program 1 times [2022-11-21 17:09:51,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:51,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651965165] [2022-11-21 17:09:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:51,441 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 [2022-11-21 17:09:51,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:51,442 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:51,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:51,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 17:09:51,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:51,768 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:09:51,768 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:09:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:09:52,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:09:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:09:52,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:52,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651965165] [2022-11-21 17:09:52,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651965165] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:09:52,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:09:52,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-21 17:09:52,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469673878] [2022-11-21 17:09:52,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:09:52,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:09:52,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:52,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:09:52,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:09:52,309 INFO L87 Difference]: Start difference. First operand 264 states and 776 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) [2022-11-21 17:09:52,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:52,786 INFO L93 Difference]: Finished difference Result 451 states and 1333 transitions. [2022-11-21 17:09:52,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:09:52,787 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 [2022-11-21 17:09:52,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:52,790 INFO L225 Difference]: With dead ends: 451 [2022-11-21 17:09:52,791 INFO L226 Difference]: Without dead ends: 451 [2022-11-21 17:09:52,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:09:52,792 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 168 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:52,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 0 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 17:09:52,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-21 17:09:52,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 232. [2022-11-21 17:09:52,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 227 states have (on average 2.986784140969163) internal successors, (678), 231 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:52,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 678 transitions. [2022-11-21 17:09:52,800 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 678 transitions. Word has length 7 [2022-11-21 17:09:52,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:52,801 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 678 transitions. [2022-11-21 17:09:52,801 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) [2022-11-21 17:09:52,801 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 678 transitions. [2022-11-21 17:09:52,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 17:09:52,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:52,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:09:52,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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)] Ended with exit code 0 [2022-11-21 17:09:53,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:53,014 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:53,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:53,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1370095339, now seen corresponding path program 1 times [2022-11-21 17:09:53,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:53,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834215925] [2022-11-21 17:09:53,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:53,015 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 [2022-11-21 17:09:53,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:53,019 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:53,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:53,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:09:53,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:53,247 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:09:53,248 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:09:53,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:09:53,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:09:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:09:53,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:53,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834215925] [2022-11-21 17:09:53,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834215925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:09:53,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:09:53,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 17:09:53,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465382995] [2022-11-21 17:09:53,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:09:53,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:09:53,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:53,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:09:53,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:09:53,837 INFO L87 Difference]: Start difference. First operand 232 states and 678 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2022-11-21 17:09:55,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:55,298 INFO L93 Difference]: Finished difference Result 386 states and 1144 transitions. [2022-11-21 17:09:55,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:09:55,299 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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 8 [2022-11-21 17:09:55,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:55,301 INFO L225 Difference]: With dead ends: 386 [2022-11-21 17:09:55,301 INFO L226 Difference]: Without dead ends: 386 [2022-11-21 17:09:55,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-21 17:09:55,302 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 176 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:55,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 0 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 17:09:55,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-21 17:09:55,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 328. [2022-11-21 17:09:55,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 323 states have (on average 3.170278637770898) internal successors, (1024), 327 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 1024 transitions. [2022-11-21 17:09:55,313 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 1024 transitions. Word has length 8 [2022-11-21 17:09:55,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:55,314 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 1024 transitions. [2022-11-21 17:09:55,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2022-11-21 17:09:55,314 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 1024 transitions. [2022-11-21 17:09:55,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 17:09:55,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:55,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:09:55,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:55,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:55,533 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:55,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:55,534 INFO L85 PathProgramCache]: Analyzing trace with hash -297362301, now seen corresponding path program 1 times [2022-11-21 17:09:55,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:55,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651594122] [2022-11-21 17:09:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:55,534 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 [2022-11-21 17:09:55,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:55,535 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:55,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:55,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:09:55,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:09:55,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:09:55,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:55,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651594122] [2022-11-21 17:09:55,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651594122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:09:55,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:09:55,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:09:55,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973938265] [2022-11-21 17:09:55,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:09:55,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:09:55,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:55,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:09:55,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:09:55,704 INFO L87 Difference]: Start difference. First operand 328 states and 1024 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:55,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:55,977 INFO L93 Difference]: Finished difference Result 450 states and 1412 transitions. [2022-11-21 17:09:55,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:09:55,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-21 17:09:55,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:55,980 INFO L225 Difference]: With dead ends: 450 [2022-11-21 17:09:55,980 INFO L226 Difference]: Without dead ends: 450 [2022-11-21 17:09:55,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:09:55,981 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 98 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:55,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 0 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:09:55,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-21 17:09:55,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 386. [2022-11-21 17:09:55,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 381 states have (on average 3.338582677165354) internal successors, (1272), 385 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1272 transitions. [2022-11-21 17:09:55,997 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1272 transitions. Word has length 9 [2022-11-21 17:09:55,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:55,998 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 1272 transitions. [2022-11-21 17:09:55,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:55,998 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1272 transitions. [2022-11-21 17:09:56,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 17:09:56,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:56,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:09:56,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:56,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:56,217 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:56,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:56,217 INFO L85 PathProgramCache]: Analyzing trace with hash -628292647, now seen corresponding path program 1 times [2022-11-21 17:09:56,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:56,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180436559] [2022-11-21 17:09:56,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:09:56,218 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 [2022-11-21 17:09:56,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:56,219 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:56,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:09:56,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:09:56,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:56,488 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:09:56,489 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:09:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:09:56,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:09:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:09:57,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:09:57,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180436559] [2022-11-21 17:09:57,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180436559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:09:57,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:09:57,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 17:09:57,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546091887] [2022-11-21 17:09:57,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:09:57,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:09:57,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:09:57,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:09:57,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:09:57,137 INFO L87 Difference]: Start difference. First operand 386 states and 1272 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:58,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:09:58,511 INFO L93 Difference]: Finished difference Result 624 states and 2098 transitions. [2022-11-21 17:09:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:09:58,512 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-21 17:09:58,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:09:58,516 INFO L225 Difference]: With dead ends: 624 [2022-11-21 17:09:58,516 INFO L226 Difference]: Without dead ends: 624 [2022-11-21 17:09:58,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-21 17:09:58,517 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 184 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:09:58,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 0 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 17:09:58,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-11-21 17:09:58,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 560. [2022-11-21 17:09:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 555 states have (on average 3.527927927927928) internal successors, (1958), 559 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:58,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1958 transitions. [2022-11-21 17:09:58,531 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1958 transitions. Word has length 10 [2022-11-21 17:09:58,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:09:58,532 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 1958 transitions. [2022-11-21 17:09:58,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:09:58,532 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1958 transitions. [2022-11-21 17:09:58,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 17:09:58,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:09:58,533 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:09:58,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:58,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:58,742 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:09:58,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:09:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1440579194, now seen corresponding path program 2 times [2022-11-21 17:09:58,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:09:58,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711263900] [2022-11-21 17:09:58,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:09:58,743 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 [2022-11-21 17:09:58,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:09:58,744 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:09:58,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:09:58,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:09:58,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:09:58,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-21 17:09:58,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:09:59,037 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:09:59,037 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:09:59,417 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:09:59,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:10:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:00,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:10:00,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711263900] [2022-11-21 17:10:00,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711263900] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:10:00,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:10:00,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-21 17:10:00,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152228113] [2022-11-21 17:10:00,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:10:00,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:10:00,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:10:00,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:10:00,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:10:00,726 INFO L87 Difference]: Start difference. First operand 560 states and 1958 transitions. Second operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:10:11,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:11,839 INFO L93 Difference]: Finished difference Result 1780 states and 5822 transitions. [2022-11-21 17:10:11,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 17:10:11,841 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-21 17:10:11,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:11,850 INFO L225 Difference]: With dead ends: 1780 [2022-11-21 17:10:11,850 INFO L226 Difference]: Without dead ends: 1780 [2022-11-21 17:10:11,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=279, Invalid=651, Unknown=0, NotChecked=0, Total=930 [2022-11-21 17:10:11,851 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 419 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:11,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 0 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-21 17:10:11,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2022-11-21 17:10:11,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1010. [2022-11-21 17:10:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 1005 states have (on average 3.4706467661691542) internal successors, (3488), 1009 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:10:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 3488 transitions. [2022-11-21 17:10:11,907 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 3488 transitions. Word has length 11 [2022-11-21 17:10:11,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:11,907 INFO L495 AbstractCegarLoop]: Abstraction has 1010 states and 3488 transitions. [2022-11-21 17:10:11,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:10:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 3488 transitions. [2022-11-21 17:10:11,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 17:10:11,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:11,909 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-21 17:10:11,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:10:12,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:10:12,122 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:10:12,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:12,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1291283656, now seen corresponding path program 3 times [2022-11-21 17:10:12,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:10:12,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827186566] [2022-11-21 17:10:12,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:10:12,123 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 [2022-11-21 17:10:12,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:10:12,125 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:10:12,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:10:12,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-21 17:10:12,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:10:12,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 17:10:12,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:10:12,468 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:10:12,468 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:10:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:13,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:10:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:16,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:10:16,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827186566] [2022-11-21 17:10:16,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827186566] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:10:16,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:10:16,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-21 17:10:16,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447866282] [2022-11-21 17:10:16,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:10:16,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:10:16,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:10:16,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:10:16,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:10:16,010 INFO L87 Difference]: Start difference. First operand 1010 states and 3488 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) [2022-11-21 17:10:38,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:38,106 INFO L93 Difference]: Finished difference Result 10853 states and 38267 transitions. [2022-11-21 17:10:38,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 17:10:38,107 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 [2022-11-21 17:10:38,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:38,184 INFO L225 Difference]: With dead ends: 10853 [2022-11-21 17:10:38,184 INFO L226 Difference]: Without dead ends: 10853 [2022-11-21 17:10:38,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 17:10:38,186 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3090 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3000 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3090 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:38,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3090 Valid, 0 Invalid, 3025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3000 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-21 17:10:38,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10853 states. [2022-11-21 17:10:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10853 to 1022. [2022-11-21 17:10:38,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1017 states have (on average 3.4532940019665683) internal successors, (3512), 1021 states have internal predecessors, (3512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:10:38,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 3512 transitions. [2022-11-21 17:10:38,377 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 3512 transitions. Word has length 12 [2022-11-21 17:10:38,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:38,378 INFO L495 AbstractCegarLoop]: Abstraction has 1022 states and 3512 transitions. [2022-11-21 17:10:38,378 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) [2022-11-21 17:10:38,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 3512 transitions. [2022-11-21 17:10:38,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 17:10:38,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:38,379 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:38,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:10:38,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:10:38,593 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:10:38,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:38,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1624487016, now seen corresponding path program 3 times [2022-11-21 17:10:38,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:10:38,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007277432] [2022-11-21 17:10:38,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:10:38,594 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 [2022-11-21 17:10:38,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:10:38,595 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:10:38,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:10:38,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 17:10:38,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:10:38,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 17:10:38,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:10:39,021 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:10:39,021 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:10:39,151 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 15 treesize of output 11 [2022-11-21 17:10:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:10:39,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:10:39,709 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:10:39,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:10:39,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007277432] [2022-11-21 17:10:39,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007277432] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:10:39,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:10:39,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-21 17:10:39,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544757859] [2022-11-21 17:10:39,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:10:39,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 17:10:39,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:10:39,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 17:10:39,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:10:39,712 INFO L87 Difference]: Start difference. First operand 1022 states and 3512 transitions. Second operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:10:42,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:42,400 INFO L93 Difference]: Finished difference Result 1499 states and 4909 transitions. [2022-11-21 17:10:42,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:10:42,401 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-21 17:10:42,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:42,406 INFO L225 Difference]: With dead ends: 1499 [2022-11-21 17:10:42,407 INFO L226 Difference]: Without dead ends: 1499 [2022-11-21 17:10:42,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:10:42,408 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 290 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:42,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 0 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 17:10:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2022-11-21 17:10:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1191. [2022-11-21 17:10:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1186 states have (on average 3.427487352445194) internal successors, (4065), 1190 states have internal predecessors, (4065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:10:42,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 4065 transitions. [2022-11-21 17:10:42,444 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 4065 transitions. Word has length 13 [2022-11-21 17:10:42,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:42,445 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 4065 transitions. [2022-11-21 17:10:42,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:10:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 4065 transitions. [2022-11-21 17:10:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 17:10:42,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:42,447 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:42,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:10:42,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:10:42,670 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:10:42,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:42,670 INFO L85 PathProgramCache]: Analyzing trace with hash 5292547, now seen corresponding path program 2 times [2022-11-21 17:10:42,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:10:42,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753159696] [2022-11-21 17:10:42,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:10:42,671 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 [2022-11-21 17:10:42,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:10:42,672 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:10:42,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:10:42,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:10:42,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:10:42,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-21 17:10:42,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:10:43,015 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:10:43,015 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:10:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:43,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:10:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:44,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:10:44,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753159696] [2022-11-21 17:10:44,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753159696] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:10:44,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:10:44,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-21 17:10:44,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835538491] [2022-11-21 17:10:44,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:10:44,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:10:44,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:10:44,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:10:44,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:10:44,748 INFO L87 Difference]: Start difference. First operand 1191 states and 4065 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:10:55,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:55,577 INFO L93 Difference]: Finished difference Result 2037 states and 6593 transitions. [2022-11-21 17:10:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 17:10:55,579 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-21 17:10:55,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:55,586 INFO L225 Difference]: With dead ends: 2037 [2022-11-21 17:10:55,586 INFO L226 Difference]: Without dead ends: 2037 [2022-11-21 17:10:55,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=279, Invalid=651, Unknown=0, NotChecked=0, Total=930 [2022-11-21 17:10:55,587 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 315 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:55,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 0 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-21 17:10:55,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2022-11-21 17:10:55,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 1463. [2022-11-21 17:10:55,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1458 states have (on average 3.3957475994513033) internal successors, (4951), 1462 states have internal predecessors, (4951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:10:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 4951 transitions. [2022-11-21 17:10:55,631 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 4951 transitions. Word has length 13 [2022-11-21 17:10:55,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:55,631 INFO L495 AbstractCegarLoop]: Abstraction has 1463 states and 4951 transitions. [2022-11-21 17:10:55,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:10:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 4951 transitions. [2022-11-21 17:10:55,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 17:10:55,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:55,633 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:55,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:10:55,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:10:55,854 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:10:55,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:55,855 INFO L85 PathProgramCache]: Analyzing trace with hash -689522499, now seen corresponding path program 4 times [2022-11-21 17:10:55,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:10:55,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488530903] [2022-11-21 17:10:55,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:10:55,855 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 [2022-11-21 17:10:55,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:10:55,856 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:10:55,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:10:56,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:10:56,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:10:56,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 17:10:56,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:10:56,162 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:10:56,162 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:10:56,734 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:56,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:10:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:58,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:10:58,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488530903] [2022-11-21 17:10:58,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488530903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:10:58,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:10:58,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-21 17:10:58,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764620100] [2022-11-21 17:10:58,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:10:58,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:10:58,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:10:58,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:10:58,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:10:58,814 INFO L87 Difference]: Start difference. First operand 1463 states and 4951 transitions. Second operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:11:26,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:26,288 INFO L93 Difference]: Finished difference Result 2603 states and 8529 transitions. [2022-11-21 17:11:26,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-21 17:11:26,290 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-21 17:11:26,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:26,297 INFO L225 Difference]: With dead ends: 2603 [2022-11-21 17:11:26,297 INFO L226 Difference]: Without dead ends: 2603 [2022-11-21 17:11:26,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=515, Invalid=2241, Unknown=0, NotChecked=0, Total=2756 [2022-11-21 17:11:26,299 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1351 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3250 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:26,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 0 Invalid, 3291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3250 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2022-11-21 17:11:26,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2022-11-21 17:11:26,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 1763. [2022-11-21 17:11:26,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1758 states have (on average 3.4476678043230944) internal successors, (6061), 1762 states have internal predecessors, (6061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:11:26,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 6061 transitions. [2022-11-21 17:11:26,366 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 6061 transitions. Word has length 14 [2022-11-21 17:11:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:26,366 INFO L495 AbstractCegarLoop]: Abstraction has 1763 states and 6061 transitions. [2022-11-21 17:11:26,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:11:26,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 6061 transitions. [2022-11-21 17:11:26,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 17:11:26,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:26,369 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:26,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:11:26,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:11:26,582 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:11:26,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:26,582 INFO L85 PathProgramCache]: Analyzing trace with hash -973301173, now seen corresponding path program 5 times [2022-11-21 17:11:26,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:11:26,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559168144] [2022-11-21 17:11:26,583 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:11:26,583 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 [2022-11-21 17:11:26,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:11:26,584 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:11:26,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:11:26,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-21 17:11:26,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:11:26,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-21 17:11:26,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:11:26,986 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:11:26,987 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:11:27,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 10 [2022-11-21 17:11:27,475 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 7 treesize of output 5 [2022-11-21 17:11:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:11:27,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:11:27,771 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 8 treesize of output 6 [2022-11-21 17:11:27,797 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-21 17:11:27,801 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-21 17:11:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:30,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:11:30,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559168144] [2022-11-21 17:11:30,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559168144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:11:30,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:11:30,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2022-11-21 17:11:30,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754159948] [2022-11-21 17:11:30,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:11:30,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 17:11:30,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:11:30,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 17:11:30,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-11-21 17:11:30,011 INFO L87 Difference]: Start difference. First operand 1763 states and 6061 transitions. Second operand has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:11:37,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:37,652 INFO L93 Difference]: Finished difference Result 2211 states and 7211 transitions. [2022-11-21 17:11:37,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 17:11:37,654 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-21 17:11:37,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:37,660 INFO L225 Difference]: With dead ends: 2211 [2022-11-21 17:11:37,660 INFO L226 Difference]: Without dead ends: 2211 [2022-11-21 17:11:37,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 17:11:37,661 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 799 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:37,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 0 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-21 17:11:37,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2022-11-21 17:11:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 1731. [2022-11-21 17:11:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1726 states have (on average 3.464078794901506) internal successors, (5979), 1730 states have internal predecessors, (5979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:11:37,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 5979 transitions. [2022-11-21 17:11:37,709 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 5979 transitions. Word has length 14 [2022-11-21 17:11:37,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:37,709 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 5979 transitions. [2022-11-21 17:11:37,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:11:37,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 5979 transitions. [2022-11-21 17:11:37,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 17:11:37,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:37,712 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:37,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:11:37,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:11:37,925 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:11:37,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:37,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1237017814, now seen corresponding path program 3 times [2022-11-21 17:11:37,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:11:37,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434845741] [2022-11-21 17:11:37,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:11:37,926 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 [2022-11-21 17:11:37,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:11:37,927 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:11:37,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:11:38,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 17:11:38,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:11:38,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 17:11:38,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:11:38,372 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:11:38,372 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:11:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:11:38,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:11:38,820 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 8 treesize of output 6 [2022-11-21 17:11:38,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 9 [2022-11-21 17:11:38,853 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-21 17:11:39,696 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:11:39,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:11:39,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434845741] [2022-11-21 17:11:39,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434845741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:11:39,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:11:39,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-21 17:11:39,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969603634] [2022-11-21 17:11:39,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:11:39,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 17:11:39,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:11:39,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 17:11:39,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:11:39,698 INFO L87 Difference]: Start difference. First operand 1731 states and 5979 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:11:45,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:45,251 INFO L93 Difference]: Finished difference Result 1815 states and 5973 transitions. [2022-11-21 17:11:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:11:45,252 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2022-11-21 17:11:45,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:45,256 INFO L225 Difference]: With dead ends: 1815 [2022-11-21 17:11:45,256 INFO L226 Difference]: Without dead ends: 1815 [2022-11-21 17:11:45,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:11:45,256 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 296 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:45,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 0 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-21 17:11:45,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2022-11-21 17:11:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1697. [2022-11-21 17:11:45,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1692 states have (on average 3.4036643026004727) internal successors, (5759), 1696 states have internal predecessors, (5759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:11:45,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 5759 transitions. [2022-11-21 17:11:45,298 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 5759 transitions. Word has length 15 [2022-11-21 17:11:45,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:45,299 INFO L495 AbstractCegarLoop]: Abstraction has 1697 states and 5759 transitions. [2022-11-21 17:11:45,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:11:45,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 5759 transitions. [2022-11-21 17:11:45,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 17:11:45,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:45,301 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:45,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:11:45,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:11:45,515 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:11:45,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:45,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1676965766, now seen corresponding path program 4 times [2022-11-21 17:11:45,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:11:45,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437047085] [2022-11-21 17:11:45,515 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:11:45,516 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 [2022-11-21 17:11:45,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:11:45,517 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:11:45,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:11:45,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:11:45,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:11:45,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 17:11:45,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:11:45,840 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:11:45,840 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:11:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:46,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:11:48,506 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:48,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:11:48,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437047085] [2022-11-21 17:11:48,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437047085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:11:48,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:11:48,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-21 17:11:48,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325137544] [2022-11-21 17:11:48,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:11:48,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:11:48,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:11:48,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:11:48,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:11:48,508 INFO L87 Difference]: Start difference. First operand 1697 states and 5759 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:12:15,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:15,008 INFO L93 Difference]: Finished difference Result 2701 states and 8863 transitions. [2022-11-21 17:12:15,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 17:12:15,010 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-21 17:12:15,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:15,015 INFO L225 Difference]: With dead ends: 2701 [2022-11-21 17:12:15,015 INFO L226 Difference]: Without dead ends: 2701 [2022-11-21 17:12:15,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=528, Invalid=2334, Unknown=0, NotChecked=0, Total=2862 [2022-11-21 17:12:15,016 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1140 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3240 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:15,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 0 Invalid, 3282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3240 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2022-11-21 17:12:15,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-11-21 17:12:15,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2251. [2022-11-21 17:12:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2246 states have (on average 3.5195903829029387) internal successors, (7905), 2250 states have internal predecessors, (7905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:12:15,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 7905 transitions. [2022-11-21 17:12:15,075 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 7905 transitions. Word has length 16 [2022-11-21 17:12:15,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:15,075 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 7905 transitions. [2022-11-21 17:12:15,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:12:15,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 7905 transitions. [2022-11-21 17:12:15,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 17:12:15,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:15,077 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:15,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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)] Forceful destruction successful, exit code 0 [2022-11-21 17:12:15,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:12:15,279 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:12:15,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:15,280 INFO L85 PathProgramCache]: Analyzing trace with hash 138567161, now seen corresponding path program 5 times [2022-11-21 17:12:15,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:12:15,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772556677] [2022-11-21 17:12:15,280 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:12:15,280 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 [2022-11-21 17:12:15,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:12:15,281 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:12:15,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:12:15,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-21 17:12:15,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:12:15,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-21 17:12:15,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:15,631 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:12:15,631 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:12:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:12:16,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:12:16,355 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 8 treesize of output 6 [2022-11-21 17:12:16,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 9 [2022-11-21 17:12:16,392 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-21 17:12:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:18,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:12:18,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772556677] [2022-11-21 17:12:18,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772556677] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:12:18,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:12:18,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2022-11-21 17:12:18,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455408856] [2022-11-21 17:12:18,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:12:18,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 17:12:18,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:12:18,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 17:12:18,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-11-21 17:12:18,646 INFO L87 Difference]: Start difference. First operand 2251 states and 7905 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:12:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:26,421 INFO L93 Difference]: Finished difference Result 2411 states and 7965 transitions. [2022-11-21 17:12:26,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 17:12:26,423 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-21 17:12:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:26,428 INFO L225 Difference]: With dead ends: 2411 [2022-11-21 17:12:26,428 INFO L226 Difference]: Without dead ends: 2411 [2022-11-21 17:12:26,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 17:12:26,429 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 644 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:26,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 0 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-21 17:12:26,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2022-11-21 17:12:26,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2141. [2022-11-21 17:12:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2136 states have (on average 3.477059925093633) internal successors, (7427), 2140 states have internal predecessors, (7427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:12:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 7427 transitions. [2022-11-21 17:12:26,489 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 7427 transitions. Word has length 16 [2022-11-21 17:12:26,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:26,489 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 7427 transitions. [2022-11-21 17:12:26,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:12:26,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 7427 transitions. [2022-11-21 17:12:26,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 17:12:26,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:26,493 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:26,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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)] Forceful destruction successful, exit code 0 [2022-11-21 17:12:26,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:12:26,707 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:12:26,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:26,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1464781603, now seen corresponding path program 6 times [2022-11-21 17:12:26,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:12:26,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764069236] [2022-11-21 17:12:26,707 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:12:26,708 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 [2022-11-21 17:12:26,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:12:26,709 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:12:26,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 (29)] Waiting until timeout for monitored process [2022-11-21 17:12:27,206 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-21 17:12:27,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:12:27,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-21 17:12:27,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:27,356 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:12:27,356 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:12:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:28,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:12:28,410 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 8 treesize of output 6 [2022-11-21 17:12:28,428 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-21 17:12:28,431 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-21 17:12:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:31,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:12:31,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764069236] [2022-11-21 17:12:31,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764069236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:12:31,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:12:31,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2022-11-21 17:12:31,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702962699] [2022-11-21 17:12:31,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:12:31,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-21 17:12:31,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:12:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-21 17:12:31,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 17:12:31,834 INFO L87 Difference]: Start difference. First operand 2141 states and 7427 transitions. Second operand has 34 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:13:09,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:13:09,007 INFO L93 Difference]: Finished difference Result 5273 states and 17177 transitions. [2022-11-21 17:13:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-21 17:13:09,008 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-21 17:13:09,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:13:09,017 INFO L225 Difference]: With dead ends: 5273 [2022-11-21 17:13:09,018 INFO L226 Difference]: Without dead ends: 5273 [2022-11-21 17:13:09,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=907, Invalid=3515, Unknown=0, NotChecked=0, Total=4422 [2022-11-21 17:13:09,019 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1821 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4790 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1821 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 4790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:13:09,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1821 Valid, 0 Invalid, 4844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 4790 Invalid, 0 Unknown, 0 Unchecked, 27.4s Time] [2022-11-21 17:13:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5273 states. [2022-11-21 17:13:09,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5273 to 3769. [2022-11-21 17:13:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3769 states, 3764 states have (on average 3.5592454835281617) internal successors, (13397), 3768 states have internal predecessors, (13397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:13:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3769 states to 3769 states and 13397 transitions. [2022-11-21 17:13:09,129 INFO L78 Accepts]: Start accepts. Automaton has 3769 states and 13397 transitions. Word has length 20 [2022-11-21 17:13:09,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:13:09,129 INFO L495 AbstractCegarLoop]: Abstraction has 3769 states and 13397 transitions. [2022-11-21 17:13:09,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:13:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3769 states and 13397 transitions. [2022-11-21 17:13:09,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-21 17:13:09,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:13:09,135 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:13:09,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 (29)] Forceful destruction successful, exit code 0 [2022-11-21 17:13:09,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:13:09,350 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:13:09,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:13:09,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2105894522, now seen corresponding path program 6 times [2022-11-21 17:13:09,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:13:09,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61672209] [2022-11-21 17:13:09,351 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:13:09,351 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 [2022-11-21 17:13:09,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:13:09,353 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:13:09,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 (30)] Waiting until timeout for monitored process [2022-11-21 17:13:09,939 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-21 17:13:09,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:13:09,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-21 17:13:09,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:13:10,126 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:13:10,127 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:13:11,336 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 7 treesize of output 5 [2022-11-21 17:13:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:13:11,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:13:11,523 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 8 treesize of output 6 [2022-11-21 17:13:11,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 9 [2022-11-21 17:13:11,562 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-21 17:13:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:13:17,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:13:17,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61672209] [2022-11-21 17:13:17,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61672209] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:13:17,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:13:17,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2022-11-21 17:13:17,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913171125] [2022-11-21 17:13:17,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:13:17,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-21 17:13:17,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:13:17,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-21 17:13:17,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=977, Unknown=0, NotChecked=0, Total=1190 [2022-11-21 17:13:17,336 INFO L87 Difference]: Start difference. First operand 3769 states and 13397 transitions. Second operand has 35 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:13,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:14:13,775 INFO L93 Difference]: Finished difference Result 4811 states and 15425 transitions. [2022-11-21 17:14:13,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-21 17:14:13,776 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-21 17:14:13,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:14:13,785 INFO L225 Difference]: With dead ends: 4811 [2022-11-21 17:14:13,785 INFO L226 Difference]: Without dead ends: 4811 [2022-11-21 17:14:13,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=822, Invalid=3870, Unknown=0, NotChecked=0, Total=4692 [2022-11-21 17:14:13,786 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1715 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5361 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 5361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:14:13,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 0 Invalid, 5397 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 5361 Invalid, 0 Unknown, 0 Unchecked, 32.2s Time] [2022-11-21 17:14:13,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4811 states. [2022-11-21 17:14:13,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4811 to 3727. [2022-11-21 17:14:13,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3727 states, 3722 states have (on average 3.4994626544868352) internal successors, (13025), 3726 states have internal predecessors, (13025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:13,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 13025 transitions. [2022-11-21 17:14:13,895 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 13025 transitions. Word has length 22 [2022-11-21 17:14:13,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:14:13,895 INFO L495 AbstractCegarLoop]: Abstraction has 3727 states and 13025 transitions. [2022-11-21 17:14:13,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 13025 transitions. [2022-11-21 17:14:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:14:13,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:14:13,902 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1] [2022-11-21 17:14:13,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 (30)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:14,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:14:14,130 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:14:14,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:14,130 INFO L85 PathProgramCache]: Analyzing trace with hash -708392712, now seen corresponding path program 4 times [2022-11-21 17:14:14,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:14:14,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001700138] [2022-11-21 17:14:14,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:14:14,131 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 [2022-11-21 17:14:14,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:14:14,132 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:14:14,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 (31)] Waiting until timeout for monitored process [2022-11-21 17:14:14,376 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:14:14,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:14:14,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-21 17:14:14,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:14,521 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:14:14,522 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:14:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:16,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:14:28,545 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:28,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:14:28,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001700138] [2022-11-21 17:14:28,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001700138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:14:28,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:14:28,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2022-11-21 17:14:28,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875577736] [2022-11-21 17:14:28,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:14:28,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-21 17:14:28,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:14:28,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-21 17:14:28,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-11-21 17:14:28,547 INFO L87 Difference]: Start difference. First operand 3727 states and 13025 transitions. Second operand has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:56,876 WARN L233 SmtUtils]: Spent 16.81s on a formula simplification that was a NOOP. DAG size: 254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:15:12,007 WARN L233 SmtUtils]: Spent 13.13s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:15:27,410 WARN L233 SmtUtils]: Spent 13.50s on a formula simplification that was a NOOP. DAG size: 232 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:15:34,570 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:15:46,946 WARN L233 SmtUtils]: Spent 10.29s on a formula simplification that was a NOOP. DAG size: 211 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:15:58,344 WARN L233 SmtUtils]: Spent 9.24s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:16:07,570 WARN L233 SmtUtils]: Spent 6.93s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:17:16,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:17:16,648 INFO L93 Difference]: Finished difference Result 58647 states and 216641 transitions. [2022-11-21 17:17:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-21 17:17:16,650 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:17:16,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:17:17,030 INFO L225 Difference]: With dead ends: 58647 [2022-11-21 17:17:17,030 INFO L226 Difference]: Without dead ends: 58647 [2022-11-21 17:17:17,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 138.7s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2022-11-21 17:17:17,031 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13659 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12951 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13659 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 12951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:17:17,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13659 Valid, 0 Invalid, 12999 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 12951 Invalid, 0 Unknown, 0 Unchecked, 41.0s Time] [2022-11-21 17:17:17,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58647 states. [2022-11-21 17:17:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58647 to 3751. [2022-11-21 17:17:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 3746 states have (on average 3.489855846235985) internal successors, (13073), 3750 states have internal predecessors, (13073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:17,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 13073 transitions. [2022-11-21 17:17:17,800 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 13073 transitions. Word has length 24 [2022-11-21 17:17:17,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:17:17,801 INFO L495 AbstractCegarLoop]: Abstraction has 3751 states and 13073 transitions. [2022-11-21 17:17:17,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:17:17,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 13073 transitions. [2022-11-21 17:17:17,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:17:17,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:17:17,806 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:17:17,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 (31)] Forceful destruction successful, exit code 0 [2022-11-21 17:17:18,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:17:18,008 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:17:18,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:17:18,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2058472793, now seen corresponding path program 7 times [2022-11-21 17:17:18,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:17:18,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995235474] [2022-11-21 17:17:18,009 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:17:18,009 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 [2022-11-21 17:17:18,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:17:18,010 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:17:18,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 (32)] Waiting until timeout for monitored process [2022-11-21 17:17:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:17:18,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-21 17:17:18,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:17:18,408 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:17:18,408 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:17:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 27 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:17:19,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:17:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:17:24,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:17:24,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995235474] [2022-11-21 17:17:24,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995235474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:17:24,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:17:24,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 36 [2022-11-21 17:17:24,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553243587] [2022-11-21 17:17:24,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:17:24,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-21 17:17:24,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:17:24,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-21 17:17:24,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1082, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 17:17:24,995 INFO L87 Difference]: Start difference. First operand 3751 states and 13073 transitions. Second operand has 37 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 36 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:18:25,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:18:25,465 INFO L93 Difference]: Finished difference Result 7025 states and 23163 transitions. [2022-11-21 17:18:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-21 17:18:25,467 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 36 states have internal predecessors, (47), 0 states have call successors, (0), 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 24 [2022-11-21 17:18:25,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:18:25,484 INFO L225 Difference]: With dead ends: 7025 [2022-11-21 17:18:25,484 INFO L226 Difference]: Without dead ends: 7025 [2022-11-21 17:18:25,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1910 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=1610, Invalid=6762, Unknown=0, NotChecked=0, Total=8372 [2022-11-21 17:18:25,486 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2198 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9865 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 9865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:18:25,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2198 Valid, 0 Invalid, 9955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 9865 Invalid, 0 Unknown, 0 Unchecked, 38.7s Time] [2022-11-21 17:18:25,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7025 states. [2022-11-21 17:18:25,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7025 to 4963. [2022-11-21 17:18:25,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4963 states, 4958 states have (on average 3.4560306575231947) internal successors, (17135), 4962 states have internal predecessors, (17135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:18:25,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4963 states to 4963 states and 17135 transitions. [2022-11-21 17:18:25,686 INFO L78 Accepts]: Start accepts. Automaton has 4963 states and 17135 transitions. Word has length 24 [2022-11-21 17:18:25,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:18:25,687 INFO L495 AbstractCegarLoop]: Abstraction has 4963 states and 17135 transitions. [2022-11-21 17:18:25,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 36 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:18:25,688 INFO L276 IsEmpty]: Start isEmpty. Operand 4963 states and 17135 transitions. [2022-11-21 17:18:25,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:18:25,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:18:25,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:25,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 (32)] Forceful destruction successful, exit code 0 [2022-11-21 17:18:25,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:18:25,911 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:18:25,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:25,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1561094618, now seen corresponding path program 1 times [2022-11-21 17:18:25,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:18:25,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469778512] [2022-11-21 17:18:25,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:18:25,912 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 [2022-11-21 17:18:25,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:18:25,913 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:18:25,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 (33)] Waiting until timeout for monitored process [2022-11-21 17:18:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:18:26,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:18:26,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:18:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:18:26,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:18:26,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:18:26,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469778512] [2022-11-21 17:18:26,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469778512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:18:26,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:18:26,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:18:26,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751249595] [2022-11-21 17:18:26,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:18:26,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:18:26,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:18:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:18:26,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:18:26,232 INFO L87 Difference]: Start difference. First operand 4963 states and 17135 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 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) [2022-11-21 17:18:26,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:18:26,680 INFO L93 Difference]: Finished difference Result 6516 states and 21820 transitions. [2022-11-21 17:18:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:18:26,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 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 24 [2022-11-21 17:18:26,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:18:26,710 INFO L225 Difference]: With dead ends: 6516 [2022-11-21 17:18:26,710 INFO L226 Difference]: Without dead ends: 5959 [2022-11-21 17:18:26,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:18:26,711 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:18:26,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 17:18:26,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5959 states. [2022-11-21 17:18:26,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5959 to 5747. [2022-11-21 17:18:26,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5747 states, 5742 states have (on average 3.411354928596308) internal successors, (19588), 5746 states have internal predecessors, (19588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:18:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5747 states to 5747 states and 19588 transitions. [2022-11-21 17:18:26,879 INFO L78 Accepts]: Start accepts. Automaton has 5747 states and 19588 transitions. Word has length 24 [2022-11-21 17:18:26,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:18:26,879 INFO L495 AbstractCegarLoop]: Abstraction has 5747 states and 19588 transitions. [2022-11-21 17:18:26,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 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) [2022-11-21 17:18:26,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5747 states and 19588 transitions. [2022-11-21 17:18:26,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:18:26,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:18:26,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:26,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 (33)] Forceful destruction successful, exit code 0 [2022-11-21 17:18:27,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:18:27,098 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:18:27,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:27,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1667945516, now seen corresponding path program 2 times [2022-11-21 17:18:27,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:18:27,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286511096] [2022-11-21 17:18:27,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:18:27,099 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 [2022-11-21 17:18:27,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:18:27,100 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:18:27,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 (34)] Waiting until timeout for monitored process [2022-11-21 17:18:27,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 17:18:27,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:18:27,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:18:27,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:18:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:18:27,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:18:27,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:18:27,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286511096] [2022-11-21 17:18:27,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286511096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:18:27,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:18:27,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:18:27,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260267964] [2022-11-21 17:18:27,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:18:27,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:18:27,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:18:27,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:18:27,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:18:27,368 INFO L87 Difference]: Start difference. First operand 5747 states and 19588 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 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) [2022-11-21 17:18:27,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:18:27,734 INFO L93 Difference]: Finished difference Result 6792 states and 22895 transitions. [2022-11-21 17:18:27,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:18:27,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 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 24 [2022-11-21 17:18:27,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:18:27,751 INFO L225 Difference]: With dead ends: 6792 [2022-11-21 17:18:27,752 INFO L226 Difference]: Without dead ends: 6411 [2022-11-21 17:18:27,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:18:27,753 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:18:27,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:18:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2022-11-21 17:18:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 5531. [2022-11-21 17:18:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5531 states, 5526 states have (on average 3.4173000361925445) internal successors, (18884), 5530 states have internal predecessors, (18884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:18:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 18884 transitions. [2022-11-21 17:18:27,886 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 18884 transitions. Word has length 24 [2022-11-21 17:18:27,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:18:27,886 INFO L495 AbstractCegarLoop]: Abstraction has 5531 states and 18884 transitions. [2022-11-21 17:18:27,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 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) [2022-11-21 17:18:27,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 18884 transitions. [2022-11-21 17:18:27,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:18:27,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:18:27,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:18:27,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 (34)] Ended with exit code 0 [2022-11-21 17:18:28,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 17:18:28,104 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2022-11-21 17:18:28,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:18:28,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1411387410, now seen corresponding path program 3 times [2022-11-21 17:18:28,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:18:28,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705561007] [2022-11-21 17:18:28,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:18:28,104 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 [2022-11-21 17:18:28,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:18:28,105 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 17:18:28,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c3cf61c-d810-44a4-9425-7373f40da45a/bin/uautomizer-vX5HgA9Q3a/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 (35)] Waiting until timeout for monitored process [2022-11-21 17:18:28,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 17:18:28,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:18:28,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:18:28,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:18:28,414 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 302 treesize of output 294 [2022-11-21 17:18:28,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 17:18:28,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:18:28,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-11-21 17:18:28,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2022-11-21 17:18:29,711 INFO L321 Elim1Store]: treesize reduction 432, result has 23.0 percent of original size [2022-11-21 17:18:29,712 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 12 new quantified variables, introduced 66 case distinctions, treesize of input 313 treesize of output 248 [2022-11-21 17:18:29,726 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 110 treesize of output 106 [2022-11-21 17:18:29,739 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 106 treesize of output 102 [2022-11-21 17:19:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:19:49,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:19:51,181 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 205 treesize of output 201 [2022-11-21 17:19:51,192 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 201 treesize of output 197 [2022-11-21 17:19:58,511 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse5 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse6 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_1237 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1237) c_~A~0.base))) (let ((.cse0 (concat (concat (concat (select .cse1 .cse4) (select .cse1 .cse5)) (select .cse1 .cse6)) (select .cse1 c_~A~0.offset)))) (or (bvsle c_~min~0 .cse0) (forall ((thread2Thread1of1ForFork0_~i~1 (_ BitVec 32))) (let ((.cse2 (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)))) (let ((.cse3 (bvadd .cse2 c_~A~0.offset))) (or (not (bvsgt .cse0 (concat (concat (concat (select .cse1 (bvadd .cse2 (_ bv3 32) c_~A~0.offset)) (select .cse1 (bvadd .cse2 (_ bv2 32) c_~A~0.offset))) (select .cse1 (bvadd .cse2 c_~A~0.offset (_ bv1 32)))) (select .cse1 .cse3)))) (not (bvule .cse3 (bvadd .cse2 (_ bv4 32) c_~A~0.offset))))))))))) (forall ((thread2Thread1of1ForFork0_~i~1 (_ BitVec 32)) (v_ArrVal_1237 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse10 (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1237) c_~A~0.base)) (.cse9 (bvadd .cse10 c_~A~0.offset))) (let ((.cse8 (concat (concat (concat (select .cse7 (bvadd .cse10 (_ bv3 32) c_~A~0.offset)) (select .cse7 (bvadd .cse10 (_ bv2 32) c_~A~0.offset))) (select .cse7 (bvadd .cse10 c_~A~0.offset (_ bv1 32)))) (select .cse7 .cse9)))) (or (bvsgt (concat (concat (concat (select .cse7 .cse4) (select .cse7 .cse5)) (select .cse7 .cse6)) (select .cse7 c_~A~0.offset)) .cse8) (bvsle c_~min~0 .cse8) (not (bvule .cse9 (bvadd .cse10 (_ bv4 32) c_~A~0.offset)))))))))) is different from false [2022-11-21 17:19:58,686 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse2 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse3 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((thread2Thread1of1ForFork0_~i~1 (_ BitVec 32)) (v_ArrVal_1237 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1236 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1237) c_~A~0.base)) (.cse5 (bvadd .cse6 c_~A~0.offset))) (let ((.cse4 (concat (concat (concat (select .cse0 (bvadd .cse6 (_ bv3 32) c_~A~0.offset)) (select .cse0 (bvadd .cse6 (_ bv2 32) c_~A~0.offset))) (select .cse0 (bvadd .cse6 c_~A~0.offset (_ bv1 32)))) (select .cse0 .cse5)))) (or (bvsgt (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 c_~A~0.offset)) .cse4) (bvsle c_~min~0 .cse4) (not (bvule .cse5 (bvadd .cse6 (_ bv4 32) c_~A~0.offset)))))))) (forall ((v_ArrVal_1237 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1236 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse8 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1237) c_~A~0.base))) (let ((.cse7 (concat (concat (concat (select .cse8 .cse1) (select .cse8 .cse2)) (select .cse8 .cse3)) (select .cse8 c_~A~0.offset)))) (or (forall ((thread2Thread1of1ForFork0_~i~1 (_ BitVec 32))) (let ((.cse9 (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)))) (let ((.cse10 (bvadd .cse9 c_~A~0.offset))) (or (not (bvsgt .cse7 (concat (concat (concat (select .cse8 (bvadd .cse9 (_ bv3 32) c_~A~0.offset)) (select .cse8 (bvadd .cse9 (_ bv2 32) c_~A~0.offset))) (select .cse8 (bvadd .cse9 c_~A~0.offset (_ bv1 32)))) (select .cse8 .cse10)))) (not (bvule .cse10 (bvadd .cse9 (_ bv4 32) c_~A~0.offset))))))) (bvsle c_~min~0 .cse7))))))) is different from false [2022-11-21 17:19:58,796 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| c_~A~0.base))) (and (forall ((thread2Thread1of1ForFork0_~i~1 (_ BitVec 32)) (~A~0.offset (_ BitVec 32)) (v_ArrVal_1237 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1236 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse6 (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)))) (let ((.cse7 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1237) c_~A~0.base)) (.cse5 (bvadd .cse6 ~A~0.offset))) (let ((.cse1 (bvadd ~A~0.offset (_ bv3 32))) (.cse2 (bvadd ~A~0.offset (_ bv2 32))) (.cse3 (bvadd ~A~0.offset (_ bv1 32))) (.cse4 (concat (concat (concat (select .cse7 (bvadd .cse6 ~A~0.offset (_ bv3 32))) (select .cse7 (bvadd .cse6 ~A~0.offset (_ bv2 32)))) (select .cse7 (bvadd .cse6 ~A~0.offset (_ bv1 32)))) (select .cse7 .cse5)))) (or (bvsle (concat (concat (concat (select .cse0 .cse1) (select .cse0 .cse2)) (select .cse0 .cse3)) (select .cse0 ~A~0.offset)) .cse4) (not (bvule .cse5 (bvadd .cse6 (_ bv4 32) ~A~0.offset))) (bvsgt (concat (concat (concat (select .cse7 .cse1) (select .cse7 .cse2)) (select .cse7 .cse3)) (select .cse7 ~A~0.offset)) .cse4)))))) (forall ((~A~0.offset (_ BitVec 32)) (v_ArrVal_1237 (Array (_ BitVec 32) (_ BitVec 8))) (v_ArrVal_1236 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse12 (bvadd ~A~0.offset (_ bv3 32))) (.cse13 (bvadd ~A~0.offset (_ bv2 32))) (.cse14 (bvadd ~A~0.offset (_ bv1 32))) (.cse11 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1236) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1237) c_~A~0.base))) (let ((.cse10 (concat (concat (concat (select .cse11 .cse12) (select .cse11 .cse13)) (select .cse11 .cse14)) (select .cse11 ~A~0.offset)))) (or (forall ((thread2Thread1of1ForFork0_~i~1 (_ BitVec 32))) (let ((.cse9 (bvmul thread2Thread1of1ForFork0_~i~1 (_ bv4 32)))) (let ((.cse8 (bvadd .cse9 ~A~0.offset))) (or (not (bvule .cse8 (bvadd .cse9 (_ bv4 32) ~A~0.offset))) (not (bvsgt .cse10 (concat (concat (concat (select .cse11 (bvadd .cse9 ~A~0.offset (_ bv3 32))) (select .cse11 (bvadd .cse9 ~A~0.offset (_ bv2 32)))) (select .cse11 (bvadd .cse9 ~A~0.offset (_ bv1 32)))) (select .cse11 .cse8)))))))) (bvsle (concat (concat (concat (select .cse0 .cse12) (select .cse0 .cse13)) (select .cse0 .cse14)) (select .cse0 ~A~0.offset)) .cse10))))))) is different from false [2022-11-21 17:19:58,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:58,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:58,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:58,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:58,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:58,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:58,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:58,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:58,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:58,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:58,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:58,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,137 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:19:59,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 3339 treesize of output 2773 [2022-11-21 17:19:59,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,377 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:19:59,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 2733 treesize of output 2359 [2022-11-21 17:19:59,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,561 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:19:59,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 2319 treesize of output 1599 [2022-11-21 17:19:59,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,615 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:19:59,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:19:59,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 1559 treesize of output 1219