./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:35:09,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:35:09,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:35:09,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:35:09,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:35:09,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:35:09,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:35:09,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:35:09,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:35:09,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:35:09,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:35:09,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:35:09,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:35:09,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:35:09,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:35:09,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:35:09,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:35:09,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:35:09,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:35:09,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:35:09,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:35:09,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:35:09,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:35:09,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:35:09,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:35:09,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:35:09,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:35:09,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:35:09,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:35:09,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:35:09,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:35:09,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:35:09,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:35:09,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:35:09,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:35:09,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:35:09,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:35:09,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:35:09,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:35:09,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:35:09,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:35:09,246 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 19:35:09,271 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:35:09,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:35:09,272 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:35:09,272 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:35:09,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:35:09,273 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:35:09,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:35:09,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:35:09,275 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:35:09,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:35:09,276 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:35:09,276 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:35:09,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:35:09,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:35:09,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:35:09,277 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:35:09,278 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:35:09,278 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:35:09,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:35:09,279 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:35:09,279 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:35:09,279 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:35:09,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:35:09,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:35:09,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:35:09,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:35:09,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:35:09,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:35:09,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:35:09,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:35:09,282 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_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 [2022-11-18 19:35:09,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:35:09,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:35:09,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:35:09,558 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:35:09,558 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:35:09,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2022-11-18 19:35:09,626 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/data/8f8be6400/3bda8644b80245ea936b2014fc0b0e61/FLAG956b0c65d [2022-11-18 19:35:10,109 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:35:10,110 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2022-11-18 19:35:10,117 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/data/8f8be6400/3bda8644b80245ea936b2014fc0b0e61/FLAG956b0c65d [2022-11-18 19:35:10,445 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/data/8f8be6400/3bda8644b80245ea936b2014fc0b0e61 [2022-11-18 19:35:10,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:35:10,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:35:10,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:35:10,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:35:10,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:35:10,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:35:10" (1/1) ... [2022-11-18 19:35:10,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fe27833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:10, skipping insertion in model container [2022-11-18 19:35:10,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:35:10" (1/1) ... [2022-11-18 19:35:10,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:35:10,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:35:10,729 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-11-18 19:35:10,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:35:10,751 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-18 19:35:10,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26b25b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:10, skipping insertion in model container [2022-11-18 19:35:10,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:35:10,753 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 19:35:10,755 INFO L158 Benchmark]: Toolchain (without parser) took 305.18ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 63.0MB in the beginning and 95.8MB in the end (delta: -32.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 19:35:10,756 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 94.4MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:35:10,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.40ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 62.7MB in the beginning and 95.8MB in the end (delta: -33.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 19:35:10,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 94.4MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.40ms. Allocated memory was 94.4MB in the beginning and 119.5MB in the end (delta: 25.2MB). Free memory was 62.7MB in the beginning and 95.8MB in the end (delta: -33.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 161]: 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_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:35:12,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:35:12,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:35:12,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:35:12,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:35:12,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:35:12,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:35:12,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:35:12,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:35:12,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:35:12,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:35:12,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:35:12,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:35:12,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:35:12,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:35:12,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:35:12,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:35:12,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:35:12,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:35:12,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:35:12,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:35:12,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:35:12,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:35:12,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:35:12,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:35:12,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:35:12,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:35:12,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:35:12,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:35:12,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:35:12,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:35:12,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:35:12,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:35:12,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:35:12,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:35:12,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:35:12,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:35:12,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:35:12,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:35:12,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:35:12,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:35:12,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 19:35:13,036 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:35:13,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:35:13,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:35:13,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:35:13,038 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:35:13,038 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:35:13,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:35:13,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:35:13,040 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:35:13,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:35:13,042 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:35:13,042 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:35:13,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:35:13,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:35:13,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:35:13,043 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:35:13,044 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:35:13,044 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:35:13,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:35:13,044 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:35:13,045 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 19:35:13,045 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 19:35:13,045 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:35:13,045 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:35:13,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:35:13,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:35:13,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:35:13,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:35:13,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:35:13,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:35:13,047 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 19:35:13,047 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 19:35:13,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 19:35:13,048 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_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 [2022-11-18 19:35:13,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:35:13,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:35:13,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:35:13,529 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:35:13,531 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:35:13,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2022-11-18 19:35:13,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/data/70f318b19/bade0cbb30fc4acb80aaa31464f4247e/FLAG9fdc50d3a [2022-11-18 19:35:14,118 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:35:14,119 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2022-11-18 19:35:14,127 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/data/70f318b19/bade0cbb30fc4acb80aaa31464f4247e/FLAG9fdc50d3a [2022-11-18 19:35:14,491 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/data/70f318b19/bade0cbb30fc4acb80aaa31464f4247e [2022-11-18 19:35:14,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:35:14,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:35:14,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:35:14,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:35:14,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:35:14,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:14,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a7dd8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14, skipping insertion in model container [2022-11-18 19:35:14,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:14,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:35:14,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:35:14,736 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-11-18 19:35:14,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:35:14,797 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 19:35:14,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:35:14,825 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-11-18 19:35:14,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:35:14,837 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:35:14,870 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-11-18 19:35:14,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:35:14,898 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:35:14,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14 WrapperNode [2022-11-18 19:35:14,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:35:14,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:35:14,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:35:14,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:35:14,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:14,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:14,983 INFO L138 Inliner]: procedures = 29, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 297 [2022-11-18 19:35:14,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:35:14,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:35:14,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:35:14,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:35:14,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:14,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:15,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:15,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:15,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:15,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:15,026 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:15,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:15,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:35:15,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:35:15,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:35:15,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:35:15,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14" (1/1) ... [2022-11-18 19:35:15,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:35:15,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:15,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:35:15,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:35:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:35:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 19:35:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:35:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 19:35:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:35:15,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:35:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:35:15,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:35:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:35:15,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:35:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 19:35:15,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 19:35:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:35:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:35:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:35:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:35:15,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:35:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:35:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 19:35:15,119 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:35:15,252 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:35:15,255 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:35:16,342 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:35:16,653 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:35:16,654 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 19:35:16,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:35:16 BoogieIcfgContainer [2022-11-18 19:35:16,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:35:16,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:35:16,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:35:16,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:35:16,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:35:14" (1/3) ... [2022-11-18 19:35:16,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130eaff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:35:16, skipping insertion in model container [2022-11-18 19:35:16,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:35:14" (2/3) ... [2022-11-18 19:35:16,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130eaff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:35:16, skipping insertion in model container [2022-11-18 19:35:16,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:35:16" (3/3) ... [2022-11-18 19:35:16,677 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2022-11-18 19:35:16,697 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:35:16,697 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-18 19:35:16,698 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:35:16,843 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 19:35:16,895 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 19:35:16,915 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 255 transitions, 542 flow [2022-11-18 19:35:16,924 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 255 transitions, 542 flow [2022-11-18 19:35:16,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 255 transitions, 542 flow [2022-11-18 19:35:17,091 INFO L130 PetriNetUnfolder]: 18/251 cut-off events. [2022-11-18 19:35:17,091 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 19:35:17,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 251 events. 18/251 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 218 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 199. Up to 2 conditions per place. [2022-11-18 19:35:17,106 INFO L119 LiptonReduction]: Number of co-enabled transitions 3392 [2022-11-18 19:35:52,212 WARN L233 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 156 DAG size of output: 155 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 19:36:02,922 WARN L233 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 159 DAG size of output: 158 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 19:36:05,021 INFO L134 LiptonReduction]: Checked pairs total: 7891 [2022-11-18 19:36:05,022 INFO L136 LiptonReduction]: Total number of compositions: 260 [2022-11-18 19:36:05,030 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 71 transitions, 174 flow [2022-11-18 19:36:05,492 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7261 states, 6855 states have (on average 4.742669584245077) internal successors, (32511), 7260 states have internal predecessors, (32511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:05,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:36:05,524 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;@de132b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:36:05,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-18 19:36:05,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 7261 states, 6855 states have (on average 4.742669584245077) internal successors, (32511), 7260 states have internal predecessors, (32511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:36:05,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:05,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:36:05,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:05,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:05,570 INFO L85 PathProgramCache]: Analyzing trace with hash 38919, now seen corresponding path program 1 times [2022-11-18 19:36:05,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:05,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490403207] [2022-11-18 19:36:05,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:05,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:05,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:05,590 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:05,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 19:36:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:05,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:36:05,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:06,110 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-18 19:36:06,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-18 19:36:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:06,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:06,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:06,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490403207] [2022-11-18 19:36:06,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490403207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:06,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:06,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:36:06,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903416803] [2022-11-18 19:36:06,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:06,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:36:06,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:06,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:36:06,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:06,243 INFO L87 Difference]: Start difference. First operand has 7261 states, 6855 states have (on average 4.742669584245077) internal successors, (32511), 7260 states have internal predecessors, (32511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:06,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:06,821 INFO L93 Difference]: Finished difference Result 7258 states and 32508 transitions. [2022-11-18 19:36:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:36:06,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 19:36:06,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:06,989 INFO L225 Difference]: With dead ends: 7258 [2022-11-18 19:36:06,990 INFO L226 Difference]: Without dead ends: 7258 [2022-11-18 19:36:06,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:06,996 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 61 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:06,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 6 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:36:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7258 states. [2022-11-18 19:36:07,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7258 to 7258. [2022-11-18 19:36:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7258 states, 6855 states have (on average 4.742231947483589) internal successors, (32508), 7257 states have internal predecessors, (32508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:07,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7258 states to 7258 states and 32508 transitions. [2022-11-18 19:36:07,913 INFO L78 Accepts]: Start accepts. Automaton has 7258 states and 32508 transitions. Word has length 2 [2022-11-18 19:36:07,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:07,914 INFO L495 AbstractCegarLoop]: Abstraction has 7258 states and 32508 transitions. [2022-11-18 19:36:07,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:07,915 INFO L276 IsEmpty]: Start isEmpty. Operand 7258 states and 32508 transitions. [2022-11-18 19:36:07,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:36:07,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:07,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:36:07,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:08,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:08,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:08,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash 38920, now seen corresponding path program 1 times [2022-11-18 19:36:08,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:08,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389036606] [2022-11-18 19:36:08,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:08,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:08,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:08,147 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:08,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 19:36:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:08,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:36:08,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:08,610 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-18 19:36:08,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-18 19:36:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:08,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:08,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:08,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389036606] [2022-11-18 19:36:08,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389036606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:08,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:08,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:36:08,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751183079] [2022-11-18 19:36:08,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:08,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:36:08,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:08,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:36:08,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:08,661 INFO L87 Difference]: Start difference. First operand 7258 states and 32508 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:09,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:09,774 INFO L93 Difference]: Finished difference Result 14513 states and 65013 transitions. [2022-11-18 19:36:09,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:36:09,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 19:36:09,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:10,040 INFO L225 Difference]: With dead ends: 14513 [2022-11-18 19:36:10,041 INFO L226 Difference]: Without dead ends: 14513 [2022-11-18 19:36:10,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:10,042 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 57 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:10,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 12 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:36:10,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14513 states. [2022-11-18 19:36:10,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14513 to 7260. [2022-11-18 19:36:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7260 states, 6857 states have (on average 4.741723785912207) internal successors, (32514), 7259 states have internal predecessors, (32514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7260 states to 7260 states and 32514 transitions. [2022-11-18 19:36:10,617 INFO L78 Accepts]: Start accepts. Automaton has 7260 states and 32514 transitions. Word has length 2 [2022-11-18 19:36:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:10,618 INFO L495 AbstractCegarLoop]: Abstraction has 7260 states and 32514 transitions. [2022-11-18 19:36:10,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 7260 states and 32514 transitions. [2022-11-18 19:36:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:36:10,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:10,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:36:10,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:10,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:10,831 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:10,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:10,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1210379, now seen corresponding path program 1 times [2022-11-18 19:36:10,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:10,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440975684] [2022-11-18 19:36:10,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:10,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:10,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:10,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:10,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 19:36:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:10,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:36:10,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:11,326 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-18 19:36:11,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-18 19:36:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:11,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:11,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:11,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:11,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440975684] [2022-11-18 19:36:11,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440975684] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:11,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:36:11,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 19:36:11,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210199568] [2022-11-18 19:36:11,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:11,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:11,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:11,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:11,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:11,734 INFO L87 Difference]: Start difference. First operand 7260 states and 32514 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:13,826 INFO L93 Difference]: Finished difference Result 21772 states and 97530 transitions. [2022-11-18 19:36:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:36:13,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 19:36:13,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:14,019 INFO L225 Difference]: With dead ends: 21772 [2022-11-18 19:36:14,020 INFO L226 Difference]: Without dead ends: 21772 [2022-11-18 19:36:14,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:36:14,032 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 345 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:14,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 24 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 19:36:14,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21772 states. [2022-11-18 19:36:14,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21772 to 7266. [2022-11-18 19:36:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 6863 states have (on average 4.740201078245665) internal successors, (32532), 7265 states have internal predecessors, (32532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 32532 transitions. [2022-11-18 19:36:14,917 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 32532 transitions. Word has length 3 [2022-11-18 19:36:14,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:14,918 INFO L495 AbstractCegarLoop]: Abstraction has 7266 states and 32532 transitions. [2022-11-18 19:36:14,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:14,918 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 32532 transitions. [2022-11-18 19:36:14,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:36:14,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:14,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:36:14,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:15,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:15,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:15,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:15,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1212108, now seen corresponding path program 1 times [2022-11-18 19:36:15,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:15,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721512059] [2022-11-18 19:36:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:15,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:15,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:15,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:15,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 19:36:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:15,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:36:15,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:15,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:15,490 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-18 19:36:15,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-18 19:36:16,170 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 19:36:16,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 19:36:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:16,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:16,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:16,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721512059] [2022-11-18 19:36:16,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721512059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:16,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:16,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:36:16,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510185028] [2022-11-18 19:36:16,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:16,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:36:16,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:16,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:36:16,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:16,266 INFO L87 Difference]: Start difference. First operand 7266 states and 32532 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:16,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:16,572 INFO L93 Difference]: Finished difference Result 7267 states and 32535 transitions. [2022-11-18 19:36:16,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:36:16,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 19:36:16,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:16,639 INFO L225 Difference]: With dead ends: 7267 [2022-11-18 19:36:16,639 INFO L226 Difference]: Without dead ends: 7267 [2022-11-18 19:36:16,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:16,641 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:16,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-11-18 19:36:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7267 states. [2022-11-18 19:36:16,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7267 to 7267. [2022-11-18 19:36:16,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7267 states, 6864 states have (on average 4.7399475524475525) internal successors, (32535), 7266 states have internal predecessors, (32535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7267 states to 7267 states and 32535 transitions. [2022-11-18 19:36:17,030 INFO L78 Accepts]: Start accepts. Automaton has 7267 states and 32535 transitions. Word has length 3 [2022-11-18 19:36:17,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:17,030 INFO L495 AbstractCegarLoop]: Abstraction has 7267 states and 32535 transitions. [2022-11-18 19:36:17,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand 7267 states and 32535 transitions. [2022-11-18 19:36:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:36:17,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:17,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:36:17,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:17,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:17,253 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:17,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:17,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1212109, now seen corresponding path program 1 times [2022-11-18 19:36:17,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:17,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157665040] [2022-11-18 19:36:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:17,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:17,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:17,256 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:17,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 19:36:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:17,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:36:17,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:17,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:17,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:17,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:17,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:17,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:17,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:17,682 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-18 19:36:17,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 41 [2022-11-18 19:36:17,765 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-18 19:36:17,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 163 treesize of output 160 [2022-11-18 19:36:17,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:17,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:36:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:18,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:18,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:18,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157665040] [2022-11-18 19:36:18,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157665040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:18,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:18,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:36:18,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748513086] [2022-11-18 19:36:18,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:18,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:18,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:18,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:18,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:18,003 INFO L87 Difference]: Start difference. First operand 7267 states and 32535 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:18,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:18,379 INFO L93 Difference]: Finished difference Result 5970 states and 26049 transitions. [2022-11-18 19:36:18,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:36:18,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 19:36:18,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:18,425 INFO L225 Difference]: With dead ends: 5970 [2022-11-18 19:36:18,425 INFO L226 Difference]: Without dead ends: 5970 [2022-11-18 19:36:18,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:18,429 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:18,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 6 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 1 Unchecked, 0.3s Time] [2022-11-18 19:36:18,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5970 states. [2022-11-18 19:36:18,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5970 to 5970. [2022-11-18 19:36:18,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5970 states, 5649 states have (on average 4.611258629845991) internal successors, (26049), 5969 states have internal predecessors, (26049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5970 states to 5970 states and 26049 transitions. [2022-11-18 19:36:18,772 INFO L78 Accepts]: Start accepts. Automaton has 5970 states and 26049 transitions. Word has length 3 [2022-11-18 19:36:18,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:18,772 INFO L495 AbstractCegarLoop]: Abstraction has 5970 states and 26049 transitions. [2022-11-18 19:36:18,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:18,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5970 states and 26049 transitions. [2022-11-18 19:36:18,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 19:36:18,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:18,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 19:36:18,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-18 19:36:18,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:18,974 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:18,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:18,975 INFO L85 PathProgramCache]: Analyzing trace with hash 37527337, now seen corresponding path program 1 times [2022-11-18 19:36:18,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:18,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650963781] [2022-11-18 19:36:18,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:18,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:18,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:18,977 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:18,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 19:36:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:19,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 19:36:19,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:19,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,426 INFO L321 Elim1Store]: treesize reduction 157, result has 17.4 percent of original size [2022-11-18 19:36:19,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 88 [2022-11-18 19:36:19,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:19,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:20,040 INFO L321 Elim1Store]: treesize reduction 80, result has 31.0 percent of original size [2022-11-18 19:36:20,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 68 [2022-11-18 19:36:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:36:20,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:20,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:20,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650963781] [2022-11-18 19:36:20,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650963781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:20,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:20,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:36:20,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676889617] [2022-11-18 19:36:20,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:20,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:36:20,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:20,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:36:20,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:20,549 INFO L87 Difference]: Start difference. First operand 5970 states and 26049 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:20,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:20,768 INFO L93 Difference]: Finished difference Result 5970 states and 26048 transitions. [2022-11-18 19:36:20,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:36:20,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-18 19:36:20,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:20,805 INFO L225 Difference]: With dead ends: 5970 [2022-11-18 19:36:20,805 INFO L226 Difference]: Without dead ends: 5970 [2022-11-18 19:36:20,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:20,806 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:20,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2022-11-18 19:36:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5970 states. [2022-11-18 19:36:21,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5970 to 5969. [2022-11-18 19:36:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5969 states, 5648 states have (on average 4.611543909348442) internal successors, (26046), 5968 states have internal predecessors, (26046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5969 states to 5969 states and 26046 transitions. [2022-11-18 19:36:21,156 INFO L78 Accepts]: Start accepts. Automaton has 5969 states and 26046 transitions. Word has length 4 [2022-11-18 19:36:21,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:21,157 INFO L495 AbstractCegarLoop]: Abstraction has 5969 states and 26046 transitions. [2022-11-18 19:36:21,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:21,157 INFO L276 IsEmpty]: Start isEmpty. Operand 5969 states and 26046 transitions. [2022-11-18 19:36:21,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 19:36:21,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:21,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 19:36:21,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-18 19:36:21,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:21,370 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:21,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:21,371 INFO L85 PathProgramCache]: Analyzing trace with hash 37574736, now seen corresponding path program 1 times [2022-11-18 19:36:21,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:21,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47577741] [2022-11-18 19:36:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:21,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:21,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:21,372 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:21,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 19:36:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:21,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:36:21,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:21,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:21,739 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-18 19:36:21,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-18 19:36:23,109 INFO L321 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2022-11-18 19:36:23,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 19:36:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:36:23,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:23,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:23,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47577741] [2022-11-18 19:36:23,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47577741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:23,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:23,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:36:23,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741111770] [2022-11-18 19:36:23,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:23,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:36:23,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:23,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:36:23,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:23,440 INFO L87 Difference]: Start difference. First operand 5969 states and 26046 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:23,707 INFO L93 Difference]: Finished difference Result 5974 states and 26057 transitions. [2022-11-18 19:36:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:36:23,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-18 19:36:23,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:23,739 INFO L225 Difference]: With dead ends: 5974 [2022-11-18 19:36:23,739 INFO L226 Difference]: Without dead ends: 5974 [2022-11-18 19:36:23,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:23,741 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:23,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2022-11-18 19:36:23,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5974 states. [2022-11-18 19:36:23,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5974 to 5974. [2022-11-18 19:36:23,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5974 states, 5653 states have (on average 4.609410932248363) internal successors, (26057), 5973 states have internal predecessors, (26057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5974 states to 5974 states and 26057 transitions. [2022-11-18 19:36:23,951 INFO L78 Accepts]: Start accepts. Automaton has 5974 states and 26057 transitions. Word has length 4 [2022-11-18 19:36:23,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:23,952 INFO L495 AbstractCegarLoop]: Abstraction has 5974 states and 26057 transitions. [2022-11-18 19:36:23,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:23,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5974 states and 26057 transitions. [2022-11-18 19:36:23,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:36:23,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:23,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 19:36:23,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:24,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:24,165 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1163346835, now seen corresponding path program 1 times [2022-11-18 19:36:24,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:24,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534528832] [2022-11-18 19:36:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:24,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:24,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:24,168 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:24,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 19:36:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:24,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:36:24,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:24,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:24,549 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-18 19:36:24,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-18 19:36:25,972 INFO L321 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2022-11-18 19:36:25,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 19:36:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:36:26,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:26,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:26,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534528832] [2022-11-18 19:36:26,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534528832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:26,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:26,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:36:26,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990576770] [2022-11-18 19:36:26,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:26,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:36:26,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:26,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:36:26,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:26,308 INFO L87 Difference]: Start difference. First operand 5974 states and 26057 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:26,569 INFO L93 Difference]: Finished difference Result 5973 states and 26053 transitions. [2022-11-18 19:36:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:36:26,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 19:36:26,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:26,610 INFO L225 Difference]: With dead ends: 5973 [2022-11-18 19:36:26,610 INFO L226 Difference]: Without dead ends: 5973 [2022-11-18 19:36:26,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:26,611 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:26,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 53 Unchecked, 0.2s Time] [2022-11-18 19:36:26,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5973 states. [2022-11-18 19:36:26,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5973 to 5968. [2022-11-18 19:36:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5968 states, 5648 states have (on average 4.610835694050992) internal successors, (26042), 5967 states have internal predecessors, (26042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5968 states to 5968 states and 26042 transitions. [2022-11-18 19:36:26,886 INFO L78 Accepts]: Start accepts. Automaton has 5968 states and 26042 transitions. Word has length 5 [2022-11-18 19:36:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:26,886 INFO L495 AbstractCegarLoop]: Abstraction has 5968 states and 26042 transitions. [2022-11-18 19:36:26,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5968 states and 26042 transitions. [2022-11-18 19:36:26,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:36:26,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:26,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 19:36:26,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:27,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:27,100 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:27,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:27,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1164864489, now seen corresponding path program 1 times [2022-11-18 19:36:27,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:27,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834852956] [2022-11-18 19:36:27,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:27,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:27,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:27,103 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:27,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 19:36:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:27,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:36:27,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:27,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:27,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:27,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:27,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:27,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:27,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:27,504 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-18 19:36:27,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 41 [2022-11-18 19:36:27,555 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-18 19:36:27,555 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 31 treesize of output 27 [2022-11-18 19:36:27,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:27,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:36:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:27,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:27,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:27,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834852956] [2022-11-18 19:36:27,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834852956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:27,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:27,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:36:27,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882998245] [2022-11-18 19:36:27,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:27,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:27,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:27,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:27,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:27,722 INFO L87 Difference]: Start difference. First operand 5968 states and 26042 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:28,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:28,071 INFO L93 Difference]: Finished difference Result 5746 states and 25166 transitions. [2022-11-18 19:36:28,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:36:28,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 19:36:28,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:28,109 INFO L225 Difference]: With dead ends: 5746 [2022-11-18 19:36:28,109 INFO L226 Difference]: Without dead ends: 5746 [2022-11-18 19:36:28,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:28,110 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:28,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 1 Unchecked, 0.3s Time] [2022-11-18 19:36:28,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5746 states. [2022-11-18 19:36:28,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5746 to 5746. [2022-11-18 19:36:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5746 states, 5456 states have (on average 4.612536656891495) internal successors, (25166), 5745 states have internal predecessors, (25166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5746 states to 5746 states and 25166 transitions. [2022-11-18 19:36:28,377 INFO L78 Accepts]: Start accepts. Automaton has 5746 states and 25166 transitions. Word has length 5 [2022-11-18 19:36:28,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:28,377 INFO L495 AbstractCegarLoop]: Abstraction has 5746 states and 25166 transitions. [2022-11-18 19:36:28,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:28,378 INFO L276 IsEmpty]: Start isEmpty. Operand 5746 states and 25166 transitions. [2022-11-18 19:36:28,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:36:28,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:28,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 19:36:28,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:28,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:28,591 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:28,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1164864491, now seen corresponding path program 1 times [2022-11-18 19:36:28,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:28,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142405654] [2022-11-18 19:36:28,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:28,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:28,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:28,593 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:28,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 19:36:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:28,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 19:36:28,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:28,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:28,915 INFO L321 Elim1Store]: treesize reduction 161, result has 20.3 percent of original size [2022-11-18 19:36:28,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 74 [2022-11-18 19:36:30,055 INFO L321 Elim1Store]: treesize reduction 58, result has 27.5 percent of original size [2022-11-18 19:36:30,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 19:36:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:30,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:30,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:30,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142405654] [2022-11-18 19:36:30,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142405654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:30,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:30,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:36:30,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034351386] [2022-11-18 19:36:30,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:30,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:36:30,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:30,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:36:30,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:30,361 INFO L87 Difference]: Start difference. First operand 5746 states and 25166 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:30,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:30,608 INFO L93 Difference]: Finished difference Result 5750 states and 25176 transitions. [2022-11-18 19:36:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:36:30,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 19:36:30,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:30,645 INFO L225 Difference]: With dead ends: 5750 [2022-11-18 19:36:30,645 INFO L226 Difference]: Without dead ends: 5750 [2022-11-18 19:36:30,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:30,646 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:30,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 51 Unchecked, 0.2s Time] [2022-11-18 19:36:30,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5750 states. [2022-11-18 19:36:30,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5750 to 5750. [2022-11-18 19:36:30,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5750 states, 5460 states have (on average 4.610989010989011) internal successors, (25176), 5749 states have internal predecessors, (25176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5750 states to 5750 states and 25176 transitions. [2022-11-18 19:36:30,904 INFO L78 Accepts]: Start accepts. Automaton has 5750 states and 25176 transitions. Word has length 5 [2022-11-18 19:36:30,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:30,905 INFO L495 AbstractCegarLoop]: Abstraction has 5750 states and 25176 transitions. [2022-11-18 19:36:30,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 5750 states and 25176 transitions. [2022-11-18 19:36:30,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:36:30,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:30,906 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-18 19:36:30,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:31,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:31,122 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:31,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:31,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1702494408, now seen corresponding path program 2 times [2022-11-18 19:36:31,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:31,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585920741] [2022-11-18 19:36:31,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:36:31,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:31,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:31,125 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:31,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 19:36:31,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:36:31,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:36:31,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:36:31,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:31,543 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-18 19:36:31,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-18 19:36:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:31,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:32,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:32,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585920741] [2022-11-18 19:36:32,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585920741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:32,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:36:32,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-18 19:36:32,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246767015] [2022-11-18 19:36:32,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:32,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:36:32,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:32,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:36:32,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:36:32,639 INFO L87 Difference]: Start difference. First operand 5750 states and 25176 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:36,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:36:38,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:36:40,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:36:42,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:36:46,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:46,696 INFO L93 Difference]: Finished difference Result 40157 states and 176052 transitions. [2022-11-18 19:36:46,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:36:46,698 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:36:46,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:46,942 INFO L225 Difference]: With dead ends: 40157 [2022-11-18 19:36:46,942 INFO L226 Difference]: Without dead ends: 40157 [2022-11-18 19:36:46,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:36:46,943 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1508 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 102 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:46,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 174 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1438 Invalid, 3 Unknown, 0 Unchecked, 12.0s Time] [2022-11-18 19:36:47,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40157 states. [2022-11-18 19:36:47,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40157 to 5759. [2022-11-18 19:36:47,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5759 states, 5469 states have (on average 4.606692265496434) internal successors, (25194), 5758 states have internal predecessors, (25194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:47,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5759 states to 5759 states and 25194 transitions. [2022-11-18 19:36:47,632 INFO L78 Accepts]: Start accepts. Automaton has 5759 states and 25194 transitions. Word has length 6 [2022-11-18 19:36:47,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:47,632 INFO L495 AbstractCegarLoop]: Abstraction has 5759 states and 25194 transitions. [2022-11-18 19:36:47,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:47,632 INFO L276 IsEmpty]: Start isEmpty. Operand 5759 states and 25194 transitions. [2022-11-18 19:36:47,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:36:47,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:47,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 19:36:47,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:47,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:47,852 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:47,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:47,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1704061192, now seen corresponding path program 1 times [2022-11-18 19:36:47,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:47,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288139937] [2022-11-18 19:36:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:47,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:47,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:47,854 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:47,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 19:36:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:48,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:36:48,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:48,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:48,188 INFO L321 Elim1Store]: treesize reduction 161, result has 20.3 percent of original size [2022-11-18 19:36:48,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 74 [2022-11-18 19:36:48,685 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-18 19:36:48,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 19:36:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:36:48,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:48,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:48,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288139937] [2022-11-18 19:36:48,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288139937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:48,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:48,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:36:48,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662029544] [2022-11-18 19:36:48,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:48,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:36:48,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:48,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:36:48,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:48,869 INFO L87 Difference]: Start difference. First operand 5759 states and 25194 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:49,113 INFO L93 Difference]: Finished difference Result 5762 states and 25202 transitions. [2022-11-18 19:36:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:36:49,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:36:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:49,149 INFO L225 Difference]: With dead ends: 5762 [2022-11-18 19:36:49,149 INFO L226 Difference]: Without dead ends: 5762 [2022-11-18 19:36:49,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:49,150 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:49,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 51 Unchecked, 0.2s Time] [2022-11-18 19:36:49,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5762 states. [2022-11-18 19:36:49,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5762 to 5758. [2022-11-18 19:36:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5758 states, 5468 states have (on average 4.6071689831748355) internal successors, (25192), 5757 states have internal predecessors, (25192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5758 states to 5758 states and 25192 transitions. [2022-11-18 19:36:49,349 INFO L78 Accepts]: Start accepts. Automaton has 5758 states and 25192 transitions. Word has length 6 [2022-11-18 19:36:49,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:49,349 INFO L495 AbstractCegarLoop]: Abstraction has 5758 states and 25192 transitions. [2022-11-18 19:36:49,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:49,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5758 states and 25192 transitions. [2022-11-18 19:36:49,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:36:49,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:49,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 19:36:49,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:49,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:49,564 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:49,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1751054510, now seen corresponding path program 1 times [2022-11-18 19:36:49,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:49,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713135039] [2022-11-18 19:36:49,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:49,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:49,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:49,567 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:49,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 19:36:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:49,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:36:49,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:49,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:49,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:49,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:49,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713135039] [2022-11-18 19:36:49,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713135039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:49,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:49,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:36:49,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621557768] [2022-11-18 19:36:49,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:49,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:49,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:49,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:49,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:49,767 INFO L87 Difference]: Start difference. First operand 5758 states and 25192 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:50,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:50,341 INFO L93 Difference]: Finished difference Result 7462 states and 31460 transitions. [2022-11-18 19:36:50,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:36:50,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:36:50,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:50,380 INFO L225 Difference]: With dead ends: 7462 [2022-11-18 19:36:50,381 INFO L226 Difference]: Without dead ends: 7462 [2022-11-18 19:36:50,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:50,381 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 43 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:50,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 18 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:36:50,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7462 states. [2022-11-18 19:36:50,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7462 to 7158. [2022-11-18 19:36:50,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7158 states, 6868 states have (on average 4.468549796156086) internal successors, (30690), 7157 states have internal predecessors, (30690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7158 states to 7158 states and 30690 transitions. [2022-11-18 19:36:50,644 INFO L78 Accepts]: Start accepts. Automaton has 7158 states and 30690 transitions. Word has length 6 [2022-11-18 19:36:50,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:50,645 INFO L495 AbstractCegarLoop]: Abstraction has 7158 states and 30690 transitions. [2022-11-18 19:36:50,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:50,646 INFO L276 IsEmpty]: Start isEmpty. Operand 7158 states and 30690 transitions. [2022-11-18 19:36:50,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:36:50,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:50,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 19:36:50,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:50,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:50,861 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:50,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:50,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1749611631, now seen corresponding path program 1 times [2022-11-18 19:36:50,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:50,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77788777] [2022-11-18 19:36:50,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:50,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:50,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:50,864 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:50,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 19:36:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:51,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:36:51,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:51,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:51,226 INFO L321 Elim1Store]: treesize reduction 161, result has 20.3 percent of original size [2022-11-18 19:36:51,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 74 [2022-11-18 19:36:51,721 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-18 19:36:51,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 19:36:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:36:51,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:51,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:51,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77788777] [2022-11-18 19:36:51,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77788777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:51,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:51,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:36:51,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422741835] [2022-11-18 19:36:51,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:51,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:36:51,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:51,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:36:51,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:51,920 INFO L87 Difference]: Start difference. First operand 7158 states and 30690 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:52,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:52,179 INFO L93 Difference]: Finished difference Result 7156 states and 30686 transitions. [2022-11-18 19:36:52,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:36:52,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:36:52,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:52,212 INFO L225 Difference]: With dead ends: 7156 [2022-11-18 19:36:52,212 INFO L226 Difference]: Without dead ends: 7156 [2022-11-18 19:36:52,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:36:52,213 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:52,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 51 Unchecked, 0.2s Time] [2022-11-18 19:36:52,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7156 states. [2022-11-18 19:36:52,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7156 to 7153. [2022-11-18 19:36:52,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7153 states, 6863 states have (on average 4.470493953081743) internal successors, (30681), 7152 states have internal predecessors, (30681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7153 states to 7153 states and 30681 transitions. [2022-11-18 19:36:52,437 INFO L78 Accepts]: Start accepts. Automaton has 7153 states and 30681 transitions. Word has length 6 [2022-11-18 19:36:52,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:52,437 INFO L495 AbstractCegarLoop]: Abstraction has 7153 states and 30681 transitions. [2022-11-18 19:36:52,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:52,438 INFO L276 IsEmpty]: Start isEmpty. Operand 7153 states and 30681 transitions. [2022-11-18 19:36:52,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:36:52,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:52,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:52,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:52,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:52,639 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:52,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:52,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1286283057, now seen corresponding path program 1 times [2022-11-18 19:36:52,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:52,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604511056] [2022-11-18 19:36:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:52,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:52,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:52,642 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:52,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-18 19:36:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:52,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:36:52,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:52,986 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-18 19:36:52,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-18 19:36:53,030 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:36:53,030 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:36:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:36:53,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:36:53,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:53,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604511056] [2022-11-18 19:36:53,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604511056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:53,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:53,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:36:53,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127797377] [2022-11-18 19:36:53,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:53,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:53,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:53,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:53,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:53,053 INFO L87 Difference]: Start difference. First operand 7153 states and 30681 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:53,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:53,343 INFO L93 Difference]: Finished difference Result 5542 states and 23498 transitions. [2022-11-18 19:36:53,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:36:53,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 19:36:53,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:53,366 INFO L225 Difference]: With dead ends: 5542 [2022-11-18 19:36:53,366 INFO L226 Difference]: Without dead ends: 5542 [2022-11-18 19:36:53,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:53,367 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 102 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:53,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 6 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:36:53,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5542 states. [2022-11-18 19:36:53,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5542 to 5542. [2022-11-18 19:36:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5542 states, 5394 states have (on average 4.35632183908046) internal successors, (23498), 5541 states have internal predecessors, (23498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:53,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 23498 transitions. [2022-11-18 19:36:53,496 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 23498 transitions. Word has length 7 [2022-11-18 19:36:53,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:53,496 INFO L495 AbstractCegarLoop]: Abstraction has 5542 states and 23498 transitions. [2022-11-18 19:36:53,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:53,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 23498 transitions. [2022-11-18 19:36:53,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:36:53,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:53,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:53,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:53,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:53,703 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:53,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:53,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1286283058, now seen corresponding path program 1 times [2022-11-18 19:36:53,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:53,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735822758] [2022-11-18 19:36:53,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:53,708 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 [2022-11-18 19:36:53,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:53,709 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:53,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-18 19:36:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:53,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:36:53,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:54,155 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-18 19:36:54,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-18 19:36:54,433 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-18 19:36:54,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-18 19:36:54,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:54,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:36:54,667 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:36:54,667 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 13 treesize of output 13 [2022-11-18 19:36:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:54,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:36:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:36:58,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:36:58,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735822758] [2022-11-18 19:36:58,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735822758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:36:58,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:36:58,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 19:36:58,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749149622] [2022-11-18 19:36:58,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:36:58,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:36:58,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:36:58,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:36:58,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:36:58,183 INFO L87 Difference]: Start difference. First operand 5542 states and 23498 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:58,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:36:58,821 INFO L93 Difference]: Finished difference Result 5557 states and 23529 transitions. [2022-11-18 19:36:58,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:36:58,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 19:36:58,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:36:58,848 INFO L225 Difference]: With dead ends: 5557 [2022-11-18 19:36:58,848 INFO L226 Difference]: Without dead ends: 5557 [2022-11-18 19:36:58,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:36:58,849 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:36:58,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 47 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 159 Unchecked, 0.6s Time] [2022-11-18 19:36:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2022-11-18 19:36:58,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 5554. [2022-11-18 19:36:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5554 states, 5406 states have (on average 4.351461339252682) internal successors, (23524), 5553 states have internal predecessors, (23524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 23524 transitions. [2022-11-18 19:36:59,031 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 23524 transitions. Word has length 7 [2022-11-18 19:36:59,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:36:59,031 INFO L495 AbstractCegarLoop]: Abstraction has 5554 states and 23524 transitions. [2022-11-18 19:36:59,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:59,031 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 23524 transitions. [2022-11-18 19:36:59,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:36:59,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:36:59,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:59,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:36:59,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:59,235 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:36:59,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:59,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1284840178, now seen corresponding path program 1 times [2022-11-18 19:36:59,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:36:59,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800292372] [2022-11-18 19:36:59,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:59,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:36:59,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:36:59,238 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:36:59,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-18 19:36:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:59,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:36:59,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:36:59,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:36:59,648 INFO L321 Elim1Store]: treesize reduction 161, result has 20.3 percent of original size [2022-11-18 19:36:59,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 74 [2022-11-18 19:37:00,161 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-18 19:37:00,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 19:37:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:37:00,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:00,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:00,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800292372] [2022-11-18 19:37:00,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800292372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:00,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:00,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:37:00,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637059826] [2022-11-18 19:37:00,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:00,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:00,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:00,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:00,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:00,312 INFO L87 Difference]: Start difference. First operand 5554 states and 23524 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) [2022-11-18 19:37:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:00,538 INFO L93 Difference]: Finished difference Result 5554 states and 23526 transitions. [2022-11-18 19:37:00,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:00,539 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 [2022-11-18 19:37:00,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:00,570 INFO L225 Difference]: With dead ends: 5554 [2022-11-18 19:37:00,570 INFO L226 Difference]: Without dead ends: 5554 [2022-11-18 19:37:00,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:00,571 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:00,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 50 Unchecked, 0.2s Time] [2022-11-18 19:37:00,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5554 states. [2022-11-18 19:37:00,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5554 to 5551. [2022-11-18 19:37:00,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5551 states, 5403 states have (on average 4.352952063668332) internal successors, (23519), 5550 states have internal predecessors, (23519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:00,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 23519 transitions. [2022-11-18 19:37:00,752 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 23519 transitions. Word has length 7 [2022-11-18 19:37:00,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:00,752 INFO L495 AbstractCegarLoop]: Abstraction has 5551 states and 23519 transitions. [2022-11-18 19:37:00,752 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) [2022-11-18 19:37:00,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 23519 transitions. [2022-11-18 19:37:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:37:00,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:00,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:00,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:00,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:00,954 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:00,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:00,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1551659552, now seen corresponding path program 1 times [2022-11-18 19:37:00,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:00,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993815470] [2022-11-18 19:37:00,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:00,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:00,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:00,956 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:00,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-18 19:37:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:01,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:37:01,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:01,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:01,283 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2022-11-18 19:37:01,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2022-11-18 19:37:01,369 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:37:01,370 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:37:01,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:01,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:01,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:01,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993815470] [2022-11-18 19:37:01,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993815470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:01,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:01,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:37:01,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641136903] [2022-11-18 19:37:01,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:01,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:01,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:01,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:01,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:01,436 INFO L87 Difference]: Start difference. First operand 5551 states and 23519 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) [2022-11-18 19:37:01,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:01,625 INFO L93 Difference]: Finished difference Result 5560 states and 23550 transitions. [2022-11-18 19:37:01,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:01,626 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 [2022-11-18 19:37:01,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:01,646 INFO L225 Difference]: With dead ends: 5560 [2022-11-18 19:37:01,646 INFO L226 Difference]: Without dead ends: 5560 [2022-11-18 19:37:01,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:01,646 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:01,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 49 Unchecked, 0.2s Time] [2022-11-18 19:37:01,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5560 states. [2022-11-18 19:37:01,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 5560. [2022-11-18 19:37:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 5412 states have (on average 4.351441241685144) internal successors, (23550), 5559 states have internal predecessors, (23550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:01,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 23550 transitions. [2022-11-18 19:37:01,816 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 23550 transitions. Word has length 7 [2022-11-18 19:37:01,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:01,817 INFO L495 AbstractCegarLoop]: Abstraction has 5560 states and 23550 transitions. [2022-11-18 19:37:01,817 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) [2022-11-18 19:37:01,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 23550 transitions. [2022-11-18 19:37:01,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:37:01,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:01,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:01,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:02,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:02,030 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:02,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:02,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1551659551, now seen corresponding path program 1 times [2022-11-18 19:37:02,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:02,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287259889] [2022-11-18 19:37:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:02,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:02,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:02,032 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:02,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-18 19:37:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:02,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:37:02,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:02,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:02,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:02,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:02,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:02,403 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:37:02,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:37:02,432 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 18 treesize of output 16 [2022-11-18 19:37:02,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:02,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:37:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:02,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:02,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:02,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287259889] [2022-11-18 19:37:02,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287259889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:02,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:02,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:37:02,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244344803] [2022-11-18 19:37:02,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:02,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:37:02,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:02,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:37:02,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:37:02,618 INFO L87 Difference]: Start difference. First operand 5560 states and 23550 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:02,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:02,929 INFO L93 Difference]: Finished difference Result 5476 states and 23288 transitions. [2022-11-18 19:37:02,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:02,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 19:37:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:02,951 INFO L225 Difference]: With dead ends: 5476 [2022-11-18 19:37:02,951 INFO L226 Difference]: Without dead ends: 5476 [2022-11-18 19:37:02,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:37:02,952 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:02,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 6 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 1 Unchecked, 0.3s Time] [2022-11-18 19:37:02,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2022-11-18 19:37:03,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 5476. [2022-11-18 19:37:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5476 states, 5340 states have (on average 4.361048689138577) internal successors, (23288), 5475 states have internal predecessors, (23288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5476 states to 5476 states and 23288 transitions. [2022-11-18 19:37:03,087 INFO L78 Accepts]: Start accepts. Automaton has 5476 states and 23288 transitions. Word has length 7 [2022-11-18 19:37:03,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:03,088 INFO L495 AbstractCegarLoop]: Abstraction has 5476 states and 23288 transitions. [2022-11-18 19:37:03,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5476 states and 23288 transitions. [2022-11-18 19:37:03,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:37:03,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:03,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:03,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:03,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:03,295 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:03,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:03,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1551878903, now seen corresponding path program 1 times [2022-11-18 19:37:03,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:03,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727507047] [2022-11-18 19:37:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:03,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:03,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:03,298 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:03,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-18 19:37:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:03,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:37:03,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:03,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:03,619 INFO L321 Elim1Store]: treesize reduction 161, result has 20.3 percent of original size [2022-11-18 19:37:03,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 74 [2022-11-18 19:37:04,722 INFO L321 Elim1Store]: treesize reduction 58, result has 27.5 percent of original size [2022-11-18 19:37:04,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 19:37:05,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:05,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:05,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:05,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727507047] [2022-11-18 19:37:05,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727507047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:05,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:05,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:37:05,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385210313] [2022-11-18 19:37:05,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:05,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:05,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:05,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:05,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:05,233 INFO L87 Difference]: Start difference. First operand 5476 states and 23288 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) [2022-11-18 19:37:05,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:05,477 INFO L93 Difference]: Finished difference Result 5477 states and 23289 transitions. [2022-11-18 19:37:05,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:05,477 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 [2022-11-18 19:37:05,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:05,502 INFO L225 Difference]: With dead ends: 5477 [2022-11-18 19:37:05,502 INFO L226 Difference]: Without dead ends: 5477 [2022-11-18 19:37:05,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:05,503 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:05,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2022-11-18 19:37:05,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2022-11-18 19:37:05,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 5477. [2022-11-18 19:37:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5477 states, 5341 states have (on average 4.360419397116645) internal successors, (23289), 5476 states have internal predecessors, (23289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5477 states to 5477 states and 23289 transitions. [2022-11-18 19:37:05,672 INFO L78 Accepts]: Start accepts. Automaton has 5477 states and 23289 transitions. Word has length 7 [2022-11-18 19:37:05,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:05,673 INFO L495 AbstractCegarLoop]: Abstraction has 5477 states and 23289 transitions. [2022-11-18 19:37:05,673 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) [2022-11-18 19:37:05,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5477 states and 23289 transitions. [2022-11-18 19:37:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:37:05,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:05,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:05,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:05,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:05,874 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:05,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:05,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1220294589, now seen corresponding path program 1 times [2022-11-18 19:37:05,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:05,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033319879] [2022-11-18 19:37:05,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:05,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:05,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:05,876 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:05,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-18 19:37:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:06,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:37:06,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:06,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:06,243 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2022-11-18 19:37:06,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2022-11-18 19:37:06,945 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2022-11-18 19:37:06,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 19:37:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:37:07,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:07,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:07,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033319879] [2022-11-18 19:37:07,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033319879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:07,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:07,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:37:07,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690758947] [2022-11-18 19:37:07,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:07,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:07,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:07,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:07,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:07,206 INFO L87 Difference]: Start difference. First operand 5477 states and 23289 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:07,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:07,372 INFO L93 Difference]: Finished difference Result 5486 states and 23324 transitions. [2022-11-18 19:37:07,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:07,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:37:07,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:07,391 INFO L225 Difference]: With dead ends: 5486 [2022-11-18 19:37:07,391 INFO L226 Difference]: Without dead ends: 5486 [2022-11-18 19:37:07,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:07,392 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:07,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 47 Unchecked, 0.1s Time] [2022-11-18 19:37:07,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5486 states. [2022-11-18 19:37:07,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5486 to 5486. [2022-11-18 19:37:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 5350 states have (on average 4.359626168224299) internal successors, (23324), 5485 states have internal predecessors, (23324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 23324 transitions. [2022-11-18 19:37:07,523 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 23324 transitions. Word has length 8 [2022-11-18 19:37:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:07,524 INFO L495 AbstractCegarLoop]: Abstraction has 5486 states and 23324 transitions. [2022-11-18 19:37:07,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 23324 transitions. [2022-11-18 19:37:07,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:37:07,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:07,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:07,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:07,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:07,727 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:07,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:07,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1220292936, now seen corresponding path program 1 times [2022-11-18 19:37:07,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:07,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680744427] [2022-11-18 19:37:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:07,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:07,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:07,729 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:07,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-18 19:37:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:07,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:37:07,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:08,198 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-18 19:37:08,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-18 19:37:08,490 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-18 19:37:08,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-18 19:37:08,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:08,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:37:08,685 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:37:08,685 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 13 treesize of output 13 [2022-11-18 19:37:08,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:08,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:14,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:14,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680744427] [2022-11-18 19:37:14,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680744427] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:37:14,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:37:14,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 19:37:14,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108477247] [2022-11-18 19:37:14,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:14,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:37:14,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:14,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:37:14,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:37:14,299 INFO L87 Difference]: Start difference. First operand 5486 states and 23324 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:14,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:14,726 INFO L93 Difference]: Finished difference Result 5496 states and 23351 transitions. [2022-11-18 19:37:14,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:37:14,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 [2022-11-18 19:37:14,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:14,748 INFO L225 Difference]: With dead ends: 5496 [2022-11-18 19:37:14,748 INFO L226 Difference]: Without dead ends: 5496 [2022-11-18 19:37:14,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:37:14,749 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:14,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 35 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 140 Unchecked, 0.4s Time] [2022-11-18 19:37:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5496 states. [2022-11-18 19:37:14,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5496 to 5492. [2022-11-18 19:37:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5492 states, 5356 states have (on average 4.357916355489171) internal successors, (23341), 5491 states have internal predecessors, (23341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5492 states to 5492 states and 23341 transitions. [2022-11-18 19:37:14,867 INFO L78 Accepts]: Start accepts. Automaton has 5492 states and 23341 transitions. Word has length 8 [2022-11-18 19:37:14,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:14,867 INFO L495 AbstractCegarLoop]: Abstraction has 5492 states and 23341 transitions. [2022-11-18 19:37:14,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:14,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5492 states and 23341 transitions. [2022-11-18 19:37:14,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:37:14,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:14,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:14,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:15,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:15,068 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:15,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:15,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1220075238, now seen corresponding path program 1 times [2022-11-18 19:37:15,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:15,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796586291] [2022-11-18 19:37:15,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:15,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:15,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:15,070 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:15,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-18 19:37:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:15,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:37:15,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:15,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:15,450 INFO L321 Elim1Store]: treesize reduction 161, result has 20.3 percent of original size [2022-11-18 19:37:15,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 74 [2022-11-18 19:37:15,920 INFO L321 Elim1Store]: treesize reduction 42, result has 26.3 percent of original size [2022-11-18 19:37:15,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 32 [2022-11-18 19:37:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:37:16,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:16,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:16,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796586291] [2022-11-18 19:37:16,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796586291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:16,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:16,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:37:16,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224611947] [2022-11-18 19:37:16,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:16,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:16,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:16,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:16,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:16,111 INFO L87 Difference]: Start difference. First operand 5492 states and 23341 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:16,317 INFO L93 Difference]: Finished difference Result 5493 states and 23342 transitions. [2022-11-18 19:37:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:16,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:37:16,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:16,341 INFO L225 Difference]: With dead ends: 5493 [2022-11-18 19:37:16,342 INFO L226 Difference]: Without dead ends: 5493 [2022-11-18 19:37:16,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:16,342 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:16,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 48 Unchecked, 0.2s Time] [2022-11-18 19:37:16,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5493 states. [2022-11-18 19:37:16,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5493 to 5493. [2022-11-18 19:37:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 5357 states have (on average 4.357289527720739) internal successors, (23342), 5492 states have internal predecessors, (23342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 23342 transitions. [2022-11-18 19:37:16,468 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 23342 transitions. Word has length 8 [2022-11-18 19:37:16,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:16,469 INFO L495 AbstractCegarLoop]: Abstraction has 5493 states and 23342 transitions. [2022-11-18 19:37:16,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:16,469 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 23342 transitions. [2022-11-18 19:37:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:37:16,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:16,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:16,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-18 19:37:16,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:16,670 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:16,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:16,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1220070278, now seen corresponding path program 1 times [2022-11-18 19:37:16,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:16,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221255073] [2022-11-18 19:37:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:16,671 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 [2022-11-18 19:37:16,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:16,672 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:16,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-18 19:37:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:16,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:37:16,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:17,046 INFO L321 Elim1Store]: treesize reduction 178, result has 20.2 percent of original size [2022-11-18 19:37:17,047 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 7 case distinctions, treesize of input 49 treesize of output 78 [2022-11-18 19:37:17,626 INFO L321 Elim1Store]: treesize reduction 54, result has 32.5 percent of original size [2022-11-18 19:37:17,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 52 [2022-11-18 19:37:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:37:18,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:18,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:18,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221255073] [2022-11-18 19:37:18,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221255073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:18,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:18,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:37:18,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853329386] [2022-11-18 19:37:18,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:18,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:37:18,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:18,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:37:18,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:18,122 INFO L87 Difference]: Start difference. First operand 5493 states and 23342 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:18,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:18,303 INFO L93 Difference]: Finished difference Result 5498 states and 23350 transitions. [2022-11-18 19:37:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:37:18,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:37:18,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:18,326 INFO L225 Difference]: With dead ends: 5498 [2022-11-18 19:37:18,326 INFO L226 Difference]: Without dead ends: 5498 [2022-11-18 19:37:18,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:18,327 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:18,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 89 Unchecked, 0.1s Time] [2022-11-18 19:37:18,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5498 states. [2022-11-18 19:37:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5498 to 5496. [2022-11-18 19:37:18,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5496 states, 5360 states have (on average 4.355970149253731) internal successors, (23348), 5495 states have internal predecessors, (23348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5496 states to 5496 states and 23348 transitions. [2022-11-18 19:37:18,448 INFO L78 Accepts]: Start accepts. Automaton has 5496 states and 23348 transitions. Word has length 8 [2022-11-18 19:37:18,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:18,449 INFO L495 AbstractCegarLoop]: Abstraction has 5496 states and 23348 transitions. [2022-11-18 19:37:18,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:18,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5496 states and 23348 transitions. [2022-11-18 19:37:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:37:18,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:18,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:18,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:18,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:18,650 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:18,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:18,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1175333512, now seen corresponding path program 1 times [2022-11-18 19:37:18,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:18,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49701681] [2022-11-18 19:37:18,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:18,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:18,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:18,652 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:18,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-18 19:37:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:18,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:37:18,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:19,195 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-18 19:37:19,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-18 19:37:19,502 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-18 19:37:19,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-18 19:37:19,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:19,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:37:19,734 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:37:19,734 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 13 treesize of output 13 [2022-11-18 19:37:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:37:19,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:37:24,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:24,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49701681] [2022-11-18 19:37:24,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49701681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:37:24,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:37:24,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 19:37:24,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878812024] [2022-11-18 19:37:24,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:24,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:37:24,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:24,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:37:24,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:37:24,322 INFO L87 Difference]: Start difference. First operand 5496 states and 23348 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:24,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:24,818 INFO L93 Difference]: Finished difference Result 5524 states and 23410 transitions. [2022-11-18 19:37:24,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:37:24,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 [2022-11-18 19:37:24,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:24,838 INFO L225 Difference]: With dead ends: 5524 [2022-11-18 19:37:24,838 INFO L226 Difference]: Without dead ends: 5524 [2022-11-18 19:37:24,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:37:24,838 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:24,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 40 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 106 Unchecked, 0.5s Time] [2022-11-18 19:37:24,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2022-11-18 19:37:24,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 5501. [2022-11-18 19:37:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5501 states, 5365 states have (on average 4.353960857409133) internal successors, (23359), 5500 states have internal predecessors, (23359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5501 states to 5501 states and 23359 transitions. [2022-11-18 19:37:24,997 INFO L78 Accepts]: Start accepts. Automaton has 5501 states and 23359 transitions. Word has length 8 [2022-11-18 19:37:24,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:24,997 INFO L495 AbstractCegarLoop]: Abstraction has 5501 states and 23359 transitions. [2022-11-18 19:37:24,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:24,997 INFO L276 IsEmpty]: Start isEmpty. Operand 5501 states and 23359 transitions. [2022-11-18 19:37:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:37:24,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:24,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:25,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:25,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:25,207 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:25,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:25,207 INFO L85 PathProgramCache]: Analyzing trace with hash -856812620, now seen corresponding path program 1 times [2022-11-18 19:37:25,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:25,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141587448] [2022-11-18 19:37:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:25,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:25,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:25,208 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:25,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-18 19:37:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:25,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:37:25,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:25,372 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:37:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:25,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:25,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:25,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141587448] [2022-11-18 19:37:25,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141587448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:25,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:25,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:37:25,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379797454] [2022-11-18 19:37:25,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:25,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:37:25,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:25,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:37:25,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:37:25,409 INFO L87 Difference]: Start difference. First operand 5501 states and 23359 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:25,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:25,743 INFO L93 Difference]: Finished difference Result 4001 states and 16830 transitions. [2022-11-18 19:37:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:37:25,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:37:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:25,757 INFO L225 Difference]: With dead ends: 4001 [2022-11-18 19:37:25,758 INFO L226 Difference]: Without dead ends: 4001 [2022-11-18 19:37:25,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:25,758 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:25,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 6 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:37:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2022-11-18 19:37:25,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 4001. [2022-11-18 19:37:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 3929 states have (on average 4.283532705523034) internal successors, (16830), 4000 states have internal predecessors, (16830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 16830 transitions. [2022-11-18 19:37:25,841 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 16830 transitions. Word has length 8 [2022-11-18 19:37:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:25,841 INFO L495 AbstractCegarLoop]: Abstraction has 4001 states and 16830 transitions. [2022-11-18 19:37:25,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 16830 transitions. [2022-11-18 19:37:25,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:37:25,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:25,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:25,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:26,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:26,054 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:26,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:26,054 INFO L85 PathProgramCache]: Analyzing trace with hash -856812619, now seen corresponding path program 1 times [2022-11-18 19:37:26,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:26,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56861349] [2022-11-18 19:37:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:26,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:26,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:26,056 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:26,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-18 19:37:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:26,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:37:26,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:26,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:26,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:26,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56861349] [2022-11-18 19:37:26,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56861349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:26,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:26,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:37:26,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264732336] [2022-11-18 19:37:26,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:26,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:37:26,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:26,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:37:26,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:37:26,292 INFO L87 Difference]: Start difference. First operand 4001 states and 16830 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:26,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:26,907 INFO L93 Difference]: Finished difference Result 5626 states and 22675 transitions. [2022-11-18 19:37:26,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:37:26,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:37:26,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:26,933 INFO L225 Difference]: With dead ends: 5626 [2022-11-18 19:37:26,933 INFO L226 Difference]: Without dead ends: 5626 [2022-11-18 19:37:26,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:26,934 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 75 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:26,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 18 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:37:26,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2022-11-18 19:37:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 5400. [2022-11-18 19:37:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5400 states, 5328 states have (on average 4.165728228228228) internal successors, (22195), 5399 states have internal predecessors, (22195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:27,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 22195 transitions. [2022-11-18 19:37:27,063 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 22195 transitions. Word has length 8 [2022-11-18 19:37:27,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:27,063 INFO L495 AbstractCegarLoop]: Abstraction has 5400 states and 22195 transitions. [2022-11-18 19:37:27,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:27,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 22195 transitions. [2022-11-18 19:37:27,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:37:27,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:27,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:27,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:27,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:27,265 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:27,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:27,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2044593508, now seen corresponding path program 1 times [2022-11-18 19:37:27,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:27,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959606265] [2022-11-18 19:37:27,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:27,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:27,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:27,267 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:27,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-18 19:37:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:27,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:37:27,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:27,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:27,670 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2022-11-18 19:37:27,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2022-11-18 19:37:28,454 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2022-11-18 19:37:28,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 19:37:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:37:28,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:28,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:28,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959606265] [2022-11-18 19:37:28,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959606265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:28,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:28,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:37:28,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205564063] [2022-11-18 19:37:28,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:28,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:28,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:28,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:28,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:28,820 INFO L87 Difference]: Start difference. First operand 5400 states and 22195 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:28,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:28,998 INFO L93 Difference]: Finished difference Result 5400 states and 22199 transitions. [2022-11-18 19:37:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:28,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:37:28,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:29,018 INFO L225 Difference]: With dead ends: 5400 [2022-11-18 19:37:29,018 INFO L226 Difference]: Without dead ends: 5400 [2022-11-18 19:37:29,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:29,019 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:29,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2022-11-18 19:37:29,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5400 states. [2022-11-18 19:37:29,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5400 to 5400. [2022-11-18 19:37:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5400 states, 5328 states have (on average 4.166478978978979) internal successors, (22199), 5399 states have internal predecessors, (22199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 22199 transitions. [2022-11-18 19:37:29,131 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 22199 transitions. Word has length 8 [2022-11-18 19:37:29,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:29,131 INFO L495 AbstractCegarLoop]: Abstraction has 5400 states and 22199 transitions. [2022-11-18 19:37:29,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:29,131 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 22199 transitions. [2022-11-18 19:37:29,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:37:29,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:29,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:29,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:29,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:29,332 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:29,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:29,333 INFO L85 PathProgramCache]: Analyzing trace with hash 2044374157, now seen corresponding path program 1 times [2022-11-18 19:37:29,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:29,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578722699] [2022-11-18 19:37:29,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:29,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:29,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:29,334 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:29,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-18 19:37:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:29,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 19:37:29,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:29,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:29,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:29,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:29,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:29,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:29,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:29,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:29,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:29,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:29,820 INFO L321 Elim1Store]: treesize reduction 187, result has 19.0 percent of original size [2022-11-18 19:37:29,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 65 treesize of output 89 [2022-11-18 19:37:30,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:30,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:30,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:30,292 INFO L321 Elim1Store]: treesize reduction 90, result has 28.6 percent of original size [2022-11-18 19:37:30,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 68 [2022-11-18 19:37:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:37:32,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:32,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:32,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578722699] [2022-11-18 19:37:32,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578722699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:32,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:32,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:37:32,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055696793] [2022-11-18 19:37:32,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:32,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:32,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:32,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:32,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:32,424 INFO L87 Difference]: Start difference. First operand 5400 states and 22199 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:32,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:32,629 INFO L93 Difference]: Finished difference Result 5400 states and 22198 transitions. [2022-11-18 19:37:32,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:32,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 19:37:32,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:32,651 INFO L225 Difference]: With dead ends: 5400 [2022-11-18 19:37:32,651 INFO L226 Difference]: Without dead ends: 5400 [2022-11-18 19:37:32,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:32,652 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:32,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 45 Unchecked, 0.2s Time] [2022-11-18 19:37:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5400 states. [2022-11-18 19:37:32,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5400 to 5400. [2022-11-18 19:37:32,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5400 states, 5328 states have (on average 4.166291291291292) internal successors, (22198), 5399 states have internal predecessors, (22198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:32,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 22198 transitions. [2022-11-18 19:37:32,842 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 22198 transitions. Word has length 8 [2022-11-18 19:37:32,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:32,842 INFO L495 AbstractCegarLoop]: Abstraction has 5400 states and 22198 transitions. [2022-11-18 19:37:32,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:32,842 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 22198 transitions. [2022-11-18 19:37:32,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:37:32,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:32,843 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:32,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:33,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:33,061 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:33,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:33,062 INFO L85 PathProgramCache]: Analyzing trace with hash -205497646, now seen corresponding path program 2 times [2022-11-18 19:37:33,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:33,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880120084] [2022-11-18 19:37:33,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:37:33,063 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:33,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:33,063 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:33,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-18 19:37:33,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:37:33,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:37:33,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:37:33,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:33,548 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-18 19:37:33,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-18 19:37:33,889 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-18 19:37:33,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-18 19:37:34,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:34,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:37:34,108 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:37:34,108 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 13 treesize of output 13 [2022-11-18 19:37:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:37:34,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:34,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:34,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880120084] [2022-11-18 19:37:34,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880120084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:34,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:34,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:37:34,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519650600] [2022-11-18 19:37:34,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:34,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:37:34,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:34,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:37:34,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:37:34,181 INFO L87 Difference]: Start difference. First operand 5400 states and 22198 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:34,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:34,595 INFO L93 Difference]: Finished difference Result 4091 states and 16537 transitions. [2022-11-18 19:37:34,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:37:34,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 19:37:34,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:34,609 INFO L225 Difference]: With dead ends: 4091 [2022-11-18 19:37:34,609 INFO L226 Difference]: Without dead ends: 4091 [2022-11-18 19:37:34,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:37:34,610 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 44 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:34,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 12 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:37:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4091 states. [2022-11-18 19:37:34,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4091 to 4066. [2022-11-18 19:37:34,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4066 states, 4039 states have (on average 4.079970289675662) internal successors, (16479), 4065 states have internal predecessors, (16479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4066 states to 4066 states and 16479 transitions. [2022-11-18 19:37:34,696 INFO L78 Accepts]: Start accepts. Automaton has 4066 states and 16479 transitions. Word has length 9 [2022-11-18 19:37:34,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:34,696 INFO L495 AbstractCegarLoop]: Abstraction has 4066 states and 16479 transitions. [2022-11-18 19:37:34,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4066 states and 16479 transitions. [2022-11-18 19:37:34,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:37:34,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:34,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:34,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:34,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:34,907 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:34,907 INFO L85 PathProgramCache]: Analyzing trace with hash -832528785, now seen corresponding path program 1 times [2022-11-18 19:37:34,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:34,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031017625] [2022-11-18 19:37:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:34,908 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:34,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:34,909 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:34,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-18 19:37:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:35,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:37:35,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:35,341 INFO L321 Elim1Store]: treesize reduction 178, result has 20.2 percent of original size [2022-11-18 19:37:35,341 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 7 case distinctions, treesize of input 49 treesize of output 78 [2022-11-18 19:37:35,940 INFO L321 Elim1Store]: treesize reduction 54, result has 32.5 percent of original size [2022-11-18 19:37:35,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 52 [2022-11-18 19:37:36,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:37:36,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:36,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:36,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031017625] [2022-11-18 19:37:36,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031017625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:36,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:36,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:37:36,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112320958] [2022-11-18 19:37:36,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:36,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:37:36,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:36,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:37:36,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:36,457 INFO L87 Difference]: Start difference. First operand 4066 states and 16479 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:36,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:36,684 INFO L93 Difference]: Finished difference Result 4066 states and 16477 transitions. [2022-11-18 19:37:36,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:37:36,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 19:37:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:36,705 INFO L225 Difference]: With dead ends: 4066 [2022-11-18 19:37:36,705 INFO L226 Difference]: Without dead ends: 4066 [2022-11-18 19:37:36,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:36,706 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:36,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 111 Unchecked, 0.2s Time] [2022-11-18 19:37:36,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2022-11-18 19:37:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 4065. [2022-11-18 19:37:36,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4065 states, 4038 states have (on average 4.079990094105993) internal successors, (16475), 4064 states have internal predecessors, (16475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 16475 transitions. [2022-11-18 19:37:36,821 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 16475 transitions. Word has length 9 [2022-11-18 19:37:36,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:36,821 INFO L495 AbstractCegarLoop]: Abstraction has 4065 states and 16475 transitions. [2022-11-18 19:37:36,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 16475 transitions. [2022-11-18 19:37:36,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:37:36,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:36,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:36,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:37,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:37,023 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:37,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:37,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2075825959, now seen corresponding path program 1 times [2022-11-18 19:37:37,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:37,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189921119] [2022-11-18 19:37:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:37,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:37,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:37,025 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:37,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-18 19:37:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:37,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:37:37,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:37,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:37,452 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2022-11-18 19:37:37,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2022-11-18 19:37:38,235 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2022-11-18 19:37:38,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 19:37:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:37:38,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:38,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:38,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189921119] [2022-11-18 19:37:38,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189921119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:38,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:38,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:37:38,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191353938] [2022-11-18 19:37:38,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:38,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:38,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:38,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:38,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:38,534 INFO L87 Difference]: Start difference. First operand 4065 states and 16475 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-18 19:37:38,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:38,692 INFO L93 Difference]: Finished difference Result 4068 states and 16490 transitions. [2022-11-18 19:37:38,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:38,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2022-11-18 19:37:38,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:38,708 INFO L225 Difference]: With dead ends: 4068 [2022-11-18 19:37:38,708 INFO L226 Difference]: Without dead ends: 4068 [2022-11-18 19:37:38,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:38,709 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:38,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 43 Unchecked, 0.1s Time] [2022-11-18 19:37:38,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2022-11-18 19:37:38,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 4068. [2022-11-18 19:37:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4068 states, 4041 states have (on average 4.080673100717644) internal successors, (16490), 4067 states have internal predecessors, (16490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4068 states to 4068 states and 16490 transitions. [2022-11-18 19:37:38,834 INFO L78 Accepts]: Start accepts. Automaton has 4068 states and 16490 transitions. Word has length 9 [2022-11-18 19:37:38,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:38,834 INFO L495 AbstractCegarLoop]: Abstraction has 4068 states and 16490 transitions. [2022-11-18 19:37:38,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-18 19:37:38,835 INFO L276 IsEmpty]: Start isEmpty. Operand 4068 states and 16490 transitions. [2022-11-18 19:37:38,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:37:38,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:38,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:38,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:39,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:39,036 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:39,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:39,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2075606608, now seen corresponding path program 1 times [2022-11-18 19:37:39,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:39,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58883691] [2022-11-18 19:37:39,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:39,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:39,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:39,038 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:39,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-18 19:37:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:39,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 19:37:39,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:39,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:39,458 INFO L321 Elim1Store]: treesize reduction 161, result has 20.3 percent of original size [2022-11-18 19:37:39,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 74 [2022-11-18 19:37:40,551 INFO L321 Elim1Store]: treesize reduction 58, result has 27.5 percent of original size [2022-11-18 19:37:40,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 19:37:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:37:41,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:41,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:41,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58883691] [2022-11-18 19:37:41,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58883691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:41,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:41,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:37:41,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385562214] [2022-11-18 19:37:41,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:41,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:41,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:41,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:41,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:41,103 INFO L87 Difference]: Start difference. First operand 4068 states and 16490 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-18 19:37:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:41,298 INFO L93 Difference]: Finished difference Result 4069 states and 16491 transitions. [2022-11-18 19:37:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:41,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2022-11-18 19:37:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:41,322 INFO L225 Difference]: With dead ends: 4069 [2022-11-18 19:37:41,322 INFO L226 Difference]: Without dead ends: 4069 [2022-11-18 19:37:41,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:41,323 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:41,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 43 Unchecked, 0.2s Time] [2022-11-18 19:37:41,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4069 states. [2022-11-18 19:37:41,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4069 to 4069. [2022-11-18 19:37:41,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 4042 states have (on average 4.079910935180604) internal successors, (16491), 4068 states have internal predecessors, (16491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 16491 transitions. [2022-11-18 19:37:41,447 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 16491 transitions. Word has length 9 [2022-11-18 19:37:41,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:41,447 INFO L495 AbstractCegarLoop]: Abstraction has 4069 states and 16491 transitions. [2022-11-18 19:37:41,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-18 19:37:41,447 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 16491 transitions. [2022-11-18 19:37:41,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:37:41,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:41,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:41,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:41,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:41,661 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:41,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:41,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2075601648, now seen corresponding path program 1 times [2022-11-18 19:37:41,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:41,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009971293] [2022-11-18 19:37:41,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:41,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:41,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:41,663 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:41,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-18 19:37:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:41,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 19:37:41,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:42,082 INFO L321 Elim1Store]: treesize reduction 178, result has 20.2 percent of original size [2022-11-18 19:37:42,082 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 7 case distinctions, treesize of input 49 treesize of output 78 [2022-11-18 19:37:42,678 INFO L321 Elim1Store]: treesize reduction 54, result has 32.5 percent of original size [2022-11-18 19:37:42,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 52 [2022-11-18 19:37:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:37:43,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:43,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:43,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009971293] [2022-11-18 19:37:43,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009971293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:43,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:43,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:37:43,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492603128] [2022-11-18 19:37:43,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:43,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:37:43,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:43,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:37:43,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:43,202 INFO L87 Difference]: Start difference. First operand 4069 states and 16491 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:43,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:43,471 INFO L93 Difference]: Finished difference Result 4071 states and 16495 transitions. [2022-11-18 19:37:43,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:37:43,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 19:37:43,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:43,490 INFO L225 Difference]: With dead ends: 4071 [2022-11-18 19:37:43,490 INFO L226 Difference]: Without dead ends: 4071 [2022-11-18 19:37:43,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:43,491 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:43,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 109 Unchecked, 0.2s Time] [2022-11-18 19:37:43,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2022-11-18 19:37:43,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 4070. [2022-11-18 19:37:43,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4070 states, 4043 states have (on average 4.0793964877566165) internal successors, (16493), 4069 states have internal predecessors, (16493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4070 states to 4070 states and 16493 transitions. [2022-11-18 19:37:43,605 INFO L78 Accepts]: Start accepts. Automaton has 4070 states and 16493 transitions. Word has length 9 [2022-11-18 19:37:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:43,605 INFO L495 AbstractCegarLoop]: Abstraction has 4070 states and 16493 transitions. [2022-11-18 19:37:43,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:43,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4070 states and 16493 transitions. [2022-11-18 19:37:43,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:37:43,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:43,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:43,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:43,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:43,820 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:43,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:43,820 INFO L85 PathProgramCache]: Analyzing trace with hash -791148982, now seen corresponding path program 1 times [2022-11-18 19:37:43,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:43,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820086783] [2022-11-18 19:37:43,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:43,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:43,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:43,822 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:43,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-18 19:37:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:44,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:37:44,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:44,128 INFO L321 Elim1Store]: treesize reduction 184, result has 13.6 percent of original size [2022-11-18 19:37:44,129 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 40 treesize of output 55 [2022-11-18 19:37:44,172 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:37:44,172 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:37:44,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:44,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:44,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:44,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820086783] [2022-11-18 19:37:44,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820086783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:44,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:44,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:37:44,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120880616] [2022-11-18 19:37:44,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:44,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:44,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:44,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:44,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:44,199 INFO L87 Difference]: Start difference. First operand 4070 states and 16493 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-18 19:37:44,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:44,427 INFO L93 Difference]: Finished difference Result 3895 states and 15811 transitions. [2022-11-18 19:37:44,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:44,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2022-11-18 19:37:44,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:44,440 INFO L225 Difference]: With dead ends: 3895 [2022-11-18 19:37:44,440 INFO L226 Difference]: Without dead ends: 3895 [2022-11-18 19:37:44,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:44,441 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:44,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 6 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:37:44,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3895 states. [2022-11-18 19:37:44,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3895 to 3895. [2022-11-18 19:37:44,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3895 states, 3872 states have (on average 4.083419421487603) internal successors, (15811), 3894 states have internal predecessors, (15811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3895 states to 3895 states and 15811 transitions. [2022-11-18 19:37:44,518 INFO L78 Accepts]: Start accepts. Automaton has 3895 states and 15811 transitions. Word has length 9 [2022-11-18 19:37:44,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:44,519 INFO L495 AbstractCegarLoop]: Abstraction has 3895 states and 15811 transitions. [2022-11-18 19:37:44,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-18 19:37:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states and 15811 transitions. [2022-11-18 19:37:44,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:37:44,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:44,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:44,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-18 19:37:44,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:44,720 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:44,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:44,720 INFO L85 PathProgramCache]: Analyzing trace with hash -791148981, now seen corresponding path program 1 times [2022-11-18 19:37:44,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:44,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761744358] [2022-11-18 19:37:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:44,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:44,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:44,722 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:44,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-18 19:37:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:44,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:37:44,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:44,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:44,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:44,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:44,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:45,130 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:37:45,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:37:45,143 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 22 treesize of output 20 [2022-11-18 19:37:45,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:45,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:37:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:45,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:45,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:45,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761744358] [2022-11-18 19:37:45,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761744358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:45,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:45,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:37:45,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187864753] [2022-11-18 19:37:45,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:45,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:37:45,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:45,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:37:45,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:37:45,313 INFO L87 Difference]: Start difference. First operand 3895 states and 15811 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-18 19:37:45,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:45,599 INFO L93 Difference]: Finished difference Result 3893 states and 15811 transitions. [2022-11-18 19:37:45,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:37:45,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2022-11-18 19:37:45,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:45,612 INFO L225 Difference]: With dead ends: 3893 [2022-11-18 19:37:45,613 INFO L226 Difference]: Without dead ends: 3893 [2022-11-18 19:37:45,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:45,613 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:45,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 18 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 41 Unchecked, 0.2s Time] [2022-11-18 19:37:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3893 states. [2022-11-18 19:37:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3893 to 3893. [2022-11-18 19:37:45,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3893 states, 3870 states have (on average 4.085529715762274) internal successors, (15811), 3892 states have internal predecessors, (15811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:45,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3893 states to 3893 states and 15811 transitions. [2022-11-18 19:37:45,690 INFO L78 Accepts]: Start accepts. Automaton has 3893 states and 15811 transitions. Word has length 9 [2022-11-18 19:37:45,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:45,691 INFO L495 AbstractCegarLoop]: Abstraction has 3893 states and 15811 transitions. [2022-11-18 19:37:45,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-18 19:37:45,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3893 states and 15811 transitions. [2022-11-18 19:37:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:37:45,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:45,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:45,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-18 19:37:45,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:45,893 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:45,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:45,893 INFO L85 PathProgramCache]: Analyzing trace with hash -791382585, now seen corresponding path program 1 times [2022-11-18 19:37:45,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:45,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801378088] [2022-11-18 19:37:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:45,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:45,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:45,895 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:45,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-18 19:37:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:46,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:37:46,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:46,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:46,244 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2022-11-18 19:37:46,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2022-11-18 19:37:46,348 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:37:46,349 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:37:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:46,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:46,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:46,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801378088] [2022-11-18 19:37:46,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801378088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:46,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:46,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:37:46,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248491544] [2022-11-18 19:37:46,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:46,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:46,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:46,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:46,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:46,439 INFO L87 Difference]: Start difference. First operand 3893 states and 15811 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-18 19:37:46,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:46,623 INFO L93 Difference]: Finished difference Result 3893 states and 15809 transitions. [2022-11-18 19:37:46,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:46,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2022-11-18 19:37:46,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:46,639 INFO L225 Difference]: With dead ends: 3893 [2022-11-18 19:37:46,639 INFO L226 Difference]: Without dead ends: 3893 [2022-11-18 19:37:46,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:46,639 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:46,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 41 Unchecked, 0.2s Time] [2022-11-18 19:37:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3893 states. [2022-11-18 19:37:46,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3893 to 3893. [2022-11-18 19:37:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3893 states, 3870 states have (on average 4.0850129198966405) internal successors, (15809), 3892 states have internal predecessors, (15809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:46,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3893 states to 3893 states and 15809 transitions. [2022-11-18 19:37:46,726 INFO L78 Accepts]: Start accepts. Automaton has 3893 states and 15809 transitions. Word has length 9 [2022-11-18 19:37:46,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:46,726 INFO L495 AbstractCegarLoop]: Abstraction has 3893 states and 15809 transitions. [2022-11-18 19:37:46,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-18 19:37:46,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3893 states and 15809 transitions. [2022-11-18 19:37:46,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:37:46,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:46,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:46,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-18 19:37:46,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:46,927 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:46,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:46,928 INFO L85 PathProgramCache]: Analyzing trace with hash -791393218, now seen corresponding path program 1 times [2022-11-18 19:37:46,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:46,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944702209] [2022-11-18 19:37:46,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:46,928 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:46,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:46,930 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:46,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-18 19:37:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:47,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:37:47,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:47,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:47,309 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2022-11-18 19:37:47,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2022-11-18 19:37:48,069 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2022-11-18 19:37:48,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 19:37:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:48,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:48,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:48,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944702209] [2022-11-18 19:37:48,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944702209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:48,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:48,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:37:48,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044137559] [2022-11-18 19:37:48,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:48,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:48,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:48,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:48,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:48,521 INFO L87 Difference]: Start difference. First operand 3893 states and 15809 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-18 19:37:48,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:48,719 INFO L93 Difference]: Finished difference Result 3893 states and 15807 transitions. [2022-11-18 19:37:48,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:48,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2022-11-18 19:37:48,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:48,734 INFO L225 Difference]: With dead ends: 3893 [2022-11-18 19:37:48,734 INFO L226 Difference]: Without dead ends: 3893 [2022-11-18 19:37:48,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:48,735 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:48,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 41 Unchecked, 0.2s Time] [2022-11-18 19:37:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3893 states. [2022-11-18 19:37:48,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3893 to 3893. [2022-11-18 19:37:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3893 states, 3870 states have (on average 4.084496124031007) internal successors, (15807), 3892 states have internal predecessors, (15807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3893 states to 3893 states and 15807 transitions. [2022-11-18 19:37:48,822 INFO L78 Accepts]: Start accepts. Automaton has 3893 states and 15807 transitions. Word has length 9 [2022-11-18 19:37:48,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:48,823 INFO L495 AbstractCegarLoop]: Abstraction has 3893 states and 15807 transitions. [2022-11-18 19:37:48,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-18 19:37:48,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3893 states and 15807 transitions. [2022-11-18 19:37:48,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:37:48,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:48,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:48,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-18 19:37:49,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:49,026 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:49,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:49,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1042117455, now seen corresponding path program 1 times [2022-11-18 19:37:49,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:49,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420256148] [2022-11-18 19:37:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:49,027 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:49,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:49,028 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:49,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-18 19:37:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:49,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:37:49,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:49,230 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 19:37:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:49,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:37:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:37:50,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:50,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420256148] [2022-11-18 19:37:50,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420256148] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:37:50,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:37:50,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-18 19:37:50,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649815490] [2022-11-18 19:37:50,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:37:50,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:37:50,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:50,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:37:50,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:37:50,539 INFO L87 Difference]: Start difference. First operand 3893 states and 15807 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:52,277 INFO L93 Difference]: Finished difference Result 3961 states and 16027 transitions. [2022-11-18 19:37:52,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:37:52,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-18 19:37:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:52,289 INFO L225 Difference]: With dead ends: 3961 [2022-11-18 19:37:52,289 INFO L226 Difference]: Without dead ends: 3961 [2022-11-18 19:37:52,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:37:52,290 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:52,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 52 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 131 Unchecked, 0.5s Time] [2022-11-18 19:37:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3961 states. [2022-11-18 19:37:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3961 to 3927. [2022-11-18 19:37:52,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 3904 states have (on average 4.077100409836065) internal successors, (15917), 3926 states have internal predecessors, (15917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:52,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 15917 transitions. [2022-11-18 19:37:52,361 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 15917 transitions. Word has length 9 [2022-11-18 19:37:52,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:52,361 INFO L495 AbstractCegarLoop]: Abstraction has 3927 states and 15917 transitions. [2022-11-18 19:37:52,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:52,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 15917 transitions. [2022-11-18 19:37:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:37:52,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:52,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:52,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-18 19:37:52,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:52,563 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:52,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:52,564 INFO L85 PathProgramCache]: Analyzing trace with hash 176823396, now seen corresponding path program 1 times [2022-11-18 19:37:52,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:52,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661217523] [2022-11-18 19:37:52,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:52,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:52,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:52,565 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:52,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-18 19:37:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:52,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:37:52,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:52,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:52,944 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2022-11-18 19:37:52,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2022-11-18 19:37:53,659 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2022-11-18 19:37:53,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 19:37:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:37:54,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:54,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:54,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661217523] [2022-11-18 19:37:54,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661217523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:54,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:54,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:37:54,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857899745] [2022-11-18 19:37:54,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:54,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:54,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:54,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:54,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:54,018 INFO L87 Difference]: Start difference. First operand 3927 states and 15917 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:54,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:54,171 INFO L93 Difference]: Finished difference Result 3928 states and 15919 transitions. [2022-11-18 19:37:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:54,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 10 [2022-11-18 19:37:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:54,184 INFO L225 Difference]: With dead ends: 3928 [2022-11-18 19:37:54,184 INFO L226 Difference]: Without dead ends: 3928 [2022-11-18 19:37:54,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:54,184 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:54,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2022-11-18 19:37:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2022-11-18 19:37:54,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3928. [2022-11-18 19:37:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 3905 states have (on average 4.076568501920614) internal successors, (15919), 3927 states have internal predecessors, (15919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:54,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 15919 transitions. [2022-11-18 19:37:54,261 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 15919 transitions. Word has length 10 [2022-11-18 19:37:54,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:54,261 INFO L495 AbstractCegarLoop]: Abstraction has 3928 states and 15919 transitions. [2022-11-18 19:37:54,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:54,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 15919 transitions. [2022-11-18 19:37:54,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:37:54,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:54,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:54,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-18 19:37:54,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:54,463 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:54,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:54,463 INFO L85 PathProgramCache]: Analyzing trace with hash 176812763, now seen corresponding path program 1 times [2022-11-18 19:37:54,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:54,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115750919] [2022-11-18 19:37:54,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:54,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:54,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:54,465 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:54,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-18 19:37:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:54,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:37:54,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:54,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:37:54,844 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2022-11-18 19:37:54,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2022-11-18 19:37:55,563 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2022-11-18 19:37:55,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 19:37:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:37:55,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:55,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:55,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115750919] [2022-11-18 19:37:55,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115750919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:55,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:55,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:37:55,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140626622] [2022-11-18 19:37:55,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:55,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:37:55,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:37:55,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:55,961 INFO L87 Difference]: Start difference. First operand 3928 states and 15919 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:56,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:56,098 INFO L93 Difference]: Finished difference Result 3931 states and 15924 transitions. [2022-11-18 19:37:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:37:56,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 10 [2022-11-18 19:37:56,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:56,110 INFO L225 Difference]: With dead ends: 3931 [2022-11-18 19:37:56,110 INFO L226 Difference]: Without dead ends: 3931 [2022-11-18 19:37:56,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:37:56,111 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:56,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2022-11-18 19:37:56,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2022-11-18 19:37:56,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3931. [2022-11-18 19:37:56,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3931 states, 3908 states have (on average 4.074718526100307) internal successors, (15924), 3930 states have internal predecessors, (15924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 15924 transitions. [2022-11-18 19:37:56,188 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 15924 transitions. Word has length 10 [2022-11-18 19:37:56,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:56,188 INFO L495 AbstractCegarLoop]: Abstraction has 3931 states and 15924 transitions. [2022-11-18 19:37:56,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:56,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 15924 transitions. [2022-11-18 19:37:56,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:37:56,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:56,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:56,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-18 19:37:56,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:56,390 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:56,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:56,390 INFO L85 PathProgramCache]: Analyzing trace with hash 176807803, now seen corresponding path program 1 times [2022-11-18 19:37:56,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:56,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [328564860] [2022-11-18 19:37:56,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:37:56,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:56,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:56,392 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:56,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-18 19:37:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:37:56,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:37:56,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:56,776 INFO L321 Elim1Store]: treesize reduction 168, result has 21.1 percent of original size [2022-11-18 19:37:56,776 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 5 case distinctions, treesize of input 36 treesize of output 67 [2022-11-18 19:37:57,157 INFO L321 Elim1Store]: treesize reduction 38, result has 33.3 percent of original size [2022-11-18 19:37:57,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 40 [2022-11-18 19:37:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:37:57,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:57,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:57,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [328564860] [2022-11-18 19:37:57,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [328564860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:57,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:57,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:37:57,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847676462] [2022-11-18 19:37:57,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:57,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:37:57,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:57,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:37:57,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:57,426 INFO L87 Difference]: Start difference. First operand 3931 states and 15924 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:57,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:57,584 INFO L93 Difference]: Finished difference Result 3938 states and 15944 transitions. [2022-11-18 19:37:57,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:37:57,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 10 [2022-11-18 19:37:57,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:57,596 INFO L225 Difference]: With dead ends: 3938 [2022-11-18 19:37:57,596 INFO L226 Difference]: Without dead ends: 3938 [2022-11-18 19:37:57,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:57,597 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:57,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 19 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2022-11-18 19:37:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2022-11-18 19:37:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3933. [2022-11-18 19:37:57,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3933 states, 3910 states have (on average 4.0741687979539645) internal successors, (15930), 3932 states have internal predecessors, (15930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:57,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3933 states to 3933 states and 15930 transitions. [2022-11-18 19:37:57,681 INFO L78 Accepts]: Start accepts. Automaton has 3933 states and 15930 transitions. Word has length 10 [2022-11-18 19:37:57,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:57,681 INFO L495 AbstractCegarLoop]: Abstraction has 3933 states and 15930 transitions. [2022-11-18 19:37:57,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:57,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3933 states and 15930 transitions. [2022-11-18 19:37:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:37:57,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:57,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:57,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-18 19:37:57,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:57,883 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:57,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:57,883 INFO L85 PathProgramCache]: Analyzing trace with hash 175470463, now seen corresponding path program 2 times [2022-11-18 19:37:57,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:57,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416516735] [2022-11-18 19:37:57,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:37:57,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:57,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:57,884 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:57,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-18 19:37:58,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:37:58,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:37:58,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:37:58,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:58,239 INFO L321 Elim1Store]: treesize reduction 168, result has 21.1 percent of original size [2022-11-18 19:37:58,240 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 5 case distinctions, treesize of input 36 treesize of output 67 [2022-11-18 19:37:58,574 INFO L321 Elim1Store]: treesize reduction 38, result has 33.3 percent of original size [2022-11-18 19:37:58,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 40 [2022-11-18 19:37:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:37:58,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:58,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:58,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416516735] [2022-11-18 19:37:58,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416516735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:58,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:58,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:37:58,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103468518] [2022-11-18 19:37:58,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:58,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:37:58,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:58,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:37:58,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:58,798 INFO L87 Difference]: Start difference. First operand 3933 states and 15930 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:58,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:37:58,959 INFO L93 Difference]: Finished difference Result 3938 states and 15942 transitions. [2022-11-18 19:37:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:37:58,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 10 [2022-11-18 19:37:58,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:37:58,971 INFO L225 Difference]: With dead ends: 3938 [2022-11-18 19:37:58,971 INFO L226 Difference]: Without dead ends: 3938 [2022-11-18 19:37:58,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:58,971 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:37:58,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 19 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 44 Unchecked, 0.1s Time] [2022-11-18 19:37:58,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2022-11-18 19:37:59,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3934. [2022-11-18 19:37:59,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3911 states have (on average 4.073638455637944) internal successors, (15932), 3933 states have internal predecessors, (15932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:59,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 15932 transitions. [2022-11-18 19:37:59,044 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 15932 transitions. Word has length 10 [2022-11-18 19:37:59,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:37:59,044 INFO L495 AbstractCegarLoop]: Abstraction has 3934 states and 15932 transitions. [2022-11-18 19:37:59,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:37:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 15932 transitions. [2022-11-18 19:37:59,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:37:59,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:37:59,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:37:59,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-18 19:37:59,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:59,251 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:37:59,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:37:59,251 INFO L85 PathProgramCache]: Analyzing trace with hash -38505797, now seen corresponding path program 3 times [2022-11-18 19:37:59,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:37:59,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32600856] [2022-11-18 19:37:59,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:37:59,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:37:59,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:37:59,252 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:37:59,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-18 19:37:59,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 19:37:59,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:37:59,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:37:59,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:37:59,602 INFO L321 Elim1Store]: treesize reduction 168, result has 21.1 percent of original size [2022-11-18 19:37:59,602 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 5 case distinctions, treesize of input 36 treesize of output 67 [2022-11-18 19:37:59,687 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 19:37:59,687 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 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 19:37:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:37:59,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:37:59,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:37:59,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32600856] [2022-11-18 19:37:59,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32600856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:37:59,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:37:59,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:37:59,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938459466] [2022-11-18 19:37:59,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:37:59,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:37:59,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:37:59,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:37:59,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:37:59,794 INFO L87 Difference]: Start difference. First operand 3934 states and 15932 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:00,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:00,136 INFO L93 Difference]: Finished difference Result 6360 states and 25968 transitions. [2022-11-18 19:38:00,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:38:00,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 10 [2022-11-18 19:38:00,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:00,156 INFO L225 Difference]: With dead ends: 6360 [2022-11-18 19:38:00,156 INFO L226 Difference]: Without dead ends: 6360 [2022-11-18 19:38:00,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:38:00,157 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 42 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:00,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 23 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 62 Unchecked, 0.3s Time] [2022-11-18 19:38:00,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2022-11-18 19:38:00,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 3942. [2022-11-18 19:38:00,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3919 states have (on average 4.071446797652462) internal successors, (15956), 3941 states have internal predecessors, (15956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:00,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 15956 transitions. [2022-11-18 19:38:00,262 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 15956 transitions. Word has length 10 [2022-11-18 19:38:00,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:00,262 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 15956 transitions. [2022-11-18 19:38:00,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 15956 transitions. [2022-11-18 19:38:00,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:38:00,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:00,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:00,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-11-18 19:38:00,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:00,463 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:00,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:00,464 INFO L85 PathProgramCache]: Analyzing trace with hash -38587725, now seen corresponding path program 1 times [2022-11-18 19:38:00,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:00,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982504097] [2022-11-18 19:38:00,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:00,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:00,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:00,465 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:00,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-18 19:38:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:00,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:38:00,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:00,869 INFO L321 Elim1Store]: treesize reduction 178, result has 20.2 percent of original size [2022-11-18 19:38:00,869 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 7 case distinctions, treesize of input 49 treesize of output 78 [2022-11-18 19:38:01,433 INFO L321 Elim1Store]: treesize reduction 54, result has 32.5 percent of original size [2022-11-18 19:38:01,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 52 [2022-11-18 19:38:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:38:01,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:01,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:01,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982504097] [2022-11-18 19:38:01,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982504097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:01,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:01,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:38:01,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466241849] [2022-11-18 19:38:01,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:01,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:38:01,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:01,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:38:01,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:38:01,939 INFO L87 Difference]: Start difference. First operand 3942 states and 15956 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:02,099 INFO L93 Difference]: Finished difference Result 3942 states and 15955 transitions. [2022-11-18 19:38:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:38:02,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 10 [2022-11-18 19:38:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:02,113 INFO L225 Difference]: With dead ends: 3942 [2022-11-18 19:38:02,114 INFO L226 Difference]: Without dead ends: 3942 [2022-11-18 19:38:02,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:38:02,114 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:02,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 105 Unchecked, 0.1s Time] [2022-11-18 19:38:02,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3942 states. [2022-11-18 19:38:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3942 to 3942. [2022-11-18 19:38:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3919 states have (on average 4.07119163051799) internal successors, (15955), 3941 states have internal predecessors, (15955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:02,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 15955 transitions. [2022-11-18 19:38:02,192 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 15955 transitions. Word has length 10 [2022-11-18 19:38:02,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:02,192 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 15955 transitions. [2022-11-18 19:38:02,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:02,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 15955 transitions. [2022-11-18 19:38:02,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:38:02,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:02,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:02,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-18 19:38:02,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:02,399 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:02,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:02,399 INFO L85 PathProgramCache]: Analyzing trace with hash -80860091, now seen corresponding path program 1 times [2022-11-18 19:38:02,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:02,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659423053] [2022-11-18 19:38:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:02,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:02,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:02,400 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:02,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-18 19:38:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:02,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:38:02,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:02,861 INFO L321 Elim1Store]: treesize reduction 178, result has 20.2 percent of original size [2022-11-18 19:38:02,861 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 7 case distinctions, treesize of input 49 treesize of output 78 [2022-11-18 19:38:03,182 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2022-11-18 19:38:03,182 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 3 case distinctions, treesize of input 39 treesize of output 68 [2022-11-18 19:38:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:38:03,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:03,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:03,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659423053] [2022-11-18 19:38:03,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659423053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:03,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:03,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:38:03,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118137782] [2022-11-18 19:38:03,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:03,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:38:03,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:03,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:38:03,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:38:03,727 INFO L87 Difference]: Start difference. First operand 3942 states and 15955 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:03,902 INFO L93 Difference]: Finished difference Result 3940 states and 15950 transitions. [2022-11-18 19:38:03,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:38:03,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 10 [2022-11-18 19:38:03,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:03,917 INFO L225 Difference]: With dead ends: 3940 [2022-11-18 19:38:03,917 INFO L226 Difference]: Without dead ends: 3940 [2022-11-18 19:38:03,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:38:03,917 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:03,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 72 Unchecked, 0.1s Time] [2022-11-18 19:38:03,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2022-11-18 19:38:03,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 3939. [2022-11-18 19:38:03,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3916 states have (on average 4.072522982635342) internal successors, (15948), 3938 states have internal predecessors, (15948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:03,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 15948 transitions. [2022-11-18 19:38:03,998 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 15948 transitions. Word has length 10 [2022-11-18 19:38:03,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:03,998 INFO L495 AbstractCegarLoop]: Abstraction has 3939 states and 15948 transitions. [2022-11-18 19:38:03,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:03,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 15948 transitions. [2022-11-18 19:38:03,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:38:03,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:03,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:04,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:04,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:04,200 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:04,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2054334501, now seen corresponding path program 1 times [2022-11-18 19:38:04,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:04,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361807039] [2022-11-18 19:38:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:04,200 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:04,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:04,202 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:04,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-18 19:38:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:04,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:38:04,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:04,416 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 19:38:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:04,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:05,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:05,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361807039] [2022-11-18 19:38:05,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361807039] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:05,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:38:05,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-18 19:38:05,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762316296] [2022-11-18 19:38:05,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:05,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:38:05,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:05,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:38:05,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:38:05,598 INFO L87 Difference]: Start difference. First operand 3939 states and 15948 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:07,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:07,297 INFO L93 Difference]: Finished difference Result 3997 states and 16144 transitions. [2022-11-18 19:38:07,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:38:07,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 19:38:07,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:07,308 INFO L225 Difference]: With dead ends: 3997 [2022-11-18 19:38:07,308 INFO L226 Difference]: Without dead ends: 3997 [2022-11-18 19:38:07,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:38:07,309 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:07,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 51 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 127 Unchecked, 0.4s Time] [2022-11-18 19:38:07,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2022-11-18 19:38:07,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3951. [2022-11-18 19:38:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3928 states have (on average 4.071028513238289) internal successors, (15991), 3950 states have internal predecessors, (15991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:07,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 15991 transitions. [2022-11-18 19:38:07,430 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 15991 transitions. Word has length 10 [2022-11-18 19:38:07,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:07,431 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 15991 transitions. [2022-11-18 19:38:07,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:07,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 15991 transitions. [2022-11-18 19:38:07,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:38:07,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:07,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:07,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-18 19:38:07,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:07,632 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:07,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:07,634 INFO L85 PathProgramCache]: Analyzing trace with hash 2054335695, now seen corresponding path program 1 times [2022-11-18 19:38:07,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:07,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208813341] [2022-11-18 19:38:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:07,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:07,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:07,635 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:07,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-18 19:38:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:07,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:38:07,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:07,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:07,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:07,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:07,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:08,092 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:38:08,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:38:08,101 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 22 treesize of output 20 [2022-11-18 19:38:08,152 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 19:38:08,152 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:38:08,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:08,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:08,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:08,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:08,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208813341] [2022-11-18 19:38:08,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208813341] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:08,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:38:08,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2022-11-18 19:38:08,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982612686] [2022-11-18 19:38:08,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:08,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:38:08,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:08,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:38:08,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:38:08,900 INFO L87 Difference]: Start difference. First operand 3951 states and 15991 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2022-11-18 19:38:09,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:09,797 INFO L93 Difference]: Finished difference Result 4087 states and 16428 transitions. [2022-11-18 19:38:09,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:38:09,798 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 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 [2022-11-18 19:38:09,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:09,810 INFO L225 Difference]: With dead ends: 4087 [2022-11-18 19:38:09,810 INFO L226 Difference]: Without dead ends: 4087 [2022-11-18 19:38:09,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:38:09,812 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 129 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:09,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 46 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 105 Unchecked, 0.7s Time] [2022-11-18 19:38:09,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4087 states. [2022-11-18 19:38:09,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4087 to 3961. [2022-11-18 19:38:09,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3961 states, 3938 states have (on average 4.072879634332148) internal successors, (16039), 3960 states have internal predecessors, (16039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:09,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 16039 transitions. [2022-11-18 19:38:09,886 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 16039 transitions. Word has length 10 [2022-11-18 19:38:09,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:09,886 INFO L495 AbstractCegarLoop]: Abstraction has 3961 states and 16039 transitions. [2022-11-18 19:38:09,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 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) [2022-11-18 19:38:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 16039 transitions. [2022-11-18 19:38:09,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:38:09,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:09,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:09,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-11-18 19:38:10,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:10,098 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:10,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:10,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2054102091, now seen corresponding path program 1 times [2022-11-18 19:38:10,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:10,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580289848] [2022-11-18 19:38:10,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:10,099 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 [2022-11-18 19:38:10,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:10,099 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:10,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-18 19:38:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:10,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:38:10,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:10,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:10,508 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2022-11-18 19:38:10,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2022-11-18 19:38:11,148 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2022-11-18 19:38:11,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 19:38:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:38:11,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:11,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:11,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580289848] [2022-11-18 19:38:11,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580289848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:11,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:11,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:38:11,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513941271] [2022-11-18 19:38:11,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:11,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:38:11,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:11,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:38:11,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:38:11,553 INFO L87 Difference]: Start difference. First operand 3961 states and 16039 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:11,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:11,710 INFO L93 Difference]: Finished difference Result 3965 states and 16047 transitions. [2022-11-18 19:38:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:38:11,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 10 [2022-11-18 19:38:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:11,721 INFO L225 Difference]: With dead ends: 3965 [2022-11-18 19:38:11,722 INFO L226 Difference]: Without dead ends: 3965 [2022-11-18 19:38:11,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:38:11,722 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:11,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2022-11-18 19:38:11,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3965 states. [2022-11-18 19:38:11,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3965 to 3965. [2022-11-18 19:38:11,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3965 states, 3942 states have (on average 4.070776255707763) internal successors, (16047), 3964 states have internal predecessors, (16047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 16047 transitions. [2022-11-18 19:38:11,802 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 16047 transitions. Word has length 10 [2022-11-18 19:38:11,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:11,802 INFO L495 AbstractCegarLoop]: Abstraction has 3965 states and 16047 transitions. [2022-11-18 19:38:11,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:11,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 16047 transitions. [2022-11-18 19:38:11,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:38:11,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:11,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:11,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:12,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:12,016 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:12,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:12,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2054098433, now seen corresponding path program 1 times [2022-11-18 19:38:12,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:12,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884719036] [2022-11-18 19:38:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:12,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:12,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:12,018 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:12,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-18 19:38:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:12,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:38:12,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:12,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:12,448 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2022-11-18 19:38:12,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2022-11-18 19:38:13,097 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2022-11-18 19:38:13,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 19:38:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:38:13,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:13,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:13,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884719036] [2022-11-18 19:38:13,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884719036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:13,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:13,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:38:13,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549781820] [2022-11-18 19:38:13,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:13,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:38:13,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:13,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:38:13,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:38:13,496 INFO L87 Difference]: Start difference. First operand 3965 states and 16047 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:13,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:13,645 INFO L93 Difference]: Finished difference Result 3969 states and 16059 transitions. [2022-11-18 19:38:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:38:13,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 10 [2022-11-18 19:38:13,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:13,658 INFO L225 Difference]: With dead ends: 3969 [2022-11-18 19:38:13,658 INFO L226 Difference]: Without dead ends: 3969 [2022-11-18 19:38:13,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:38:13,659 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:13,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2022-11-18 19:38:13,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2022-11-18 19:38:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3969. [2022-11-18 19:38:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3969 states, 3946 states have (on average 4.069690826153066) internal successors, (16059), 3968 states have internal predecessors, (16059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:13,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3969 states to 3969 states and 16059 transitions. [2022-11-18 19:38:13,747 INFO L78 Accepts]: Start accepts. Automaton has 3969 states and 16059 transitions. Word has length 10 [2022-11-18 19:38:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:13,747 INFO L495 AbstractCegarLoop]: Abstraction has 3969 states and 16059 transitions. [2022-11-18 19:38:13,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:13,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3969 states and 16059 transitions. [2022-11-18 19:38:13,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:38:13,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:13,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:13,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2022-11-18 19:38:13,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:13,949 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:13,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:13,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2054091458, now seen corresponding path program 1 times [2022-11-18 19:38:13,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:13,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487525286] [2022-11-18 19:38:13,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:13,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:13,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:13,951 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:13,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-18 19:38:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:14,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:38:14,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:14,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:14,410 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2022-11-18 19:38:14,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2022-11-18 19:38:15,116 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2022-11-18 19:38:15,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2022-11-18 19:38:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:38:15,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:15,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:15,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487525286] [2022-11-18 19:38:15,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487525286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:15,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:15,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:38:15,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318447562] [2022-11-18 19:38:15,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:15,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:38:15,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:15,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:38:15,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:38:15,533 INFO L87 Difference]: Start difference. First operand 3969 states and 16059 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:15,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:15,683 INFO L93 Difference]: Finished difference Result 3971 states and 16063 transitions. [2022-11-18 19:38:15,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:38:15,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 10 [2022-11-18 19:38:15,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:15,695 INFO L225 Difference]: With dead ends: 3971 [2022-11-18 19:38:15,695 INFO L226 Difference]: Without dead ends: 3971 [2022-11-18 19:38:15,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:38:15,695 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:15,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2022-11-18 19:38:15,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2022-11-18 19:38:15,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 3971. [2022-11-18 19:38:15,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3971 states, 3948 states have (on average 4.068642350557244) internal successors, (16063), 3970 states have internal predecessors, (16063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3971 states to 3971 states and 16063 transitions. [2022-11-18 19:38:15,772 INFO L78 Accepts]: Start accepts. Automaton has 3971 states and 16063 transitions. Word has length 10 [2022-11-18 19:38:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:15,773 INFO L495 AbstractCegarLoop]: Abstraction has 3971 states and 16063 transitions. [2022-11-18 19:38:15,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:15,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3971 states and 16063 transitions. [2022-11-18 19:38:15,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:38:15,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:15,774 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1] [2022-11-18 19:38:15,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-18 19:38:15,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:15,974 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash 363353628, now seen corresponding path program 1 times [2022-11-18 19:38:15,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:15,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440268392] [2022-11-18 19:38:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:15,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:15,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:15,977 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:16,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-18 19:38:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:16,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:38:16,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:16,201 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 19:38:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:16,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:18,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:18,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440268392] [2022-11-18 19:38:18,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440268392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:18,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:38:18,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-18 19:38:18,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798267022] [2022-11-18 19:38:18,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:18,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:38:18,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:18,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:38:18,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:38:18,826 INFO L87 Difference]: Start difference. First operand 3971 states and 16063 transitions. Second operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:23,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:25,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:27,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:29,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:31,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:32,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:34,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:38:49,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:49,517 INFO L93 Difference]: Finished difference Result 43925 states and 183478 transitions. [2022-11-18 19:38:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:38:49,518 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 19:38:49,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:49,698 INFO L225 Difference]: With dead ends: 43925 [2022-11-18 19:38:49,698 INFO L226 Difference]: Without dead ends: 43925 [2022-11-18 19:38:49,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:38:49,699 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 3437 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 142 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3437 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:49,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3437 Valid, 418 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2746 Invalid, 6 Unknown, 0 Unchecked, 24.9s Time] [2022-11-18 19:38:49,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43925 states. [2022-11-18 19:38:50,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43925 to 3989. [2022-11-18 19:38:50,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3989 states, 3966 states have (on average 4.059253656076652) internal successors, (16099), 3988 states have internal predecessors, (16099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:50,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3989 states to 3989 states and 16099 transitions. [2022-11-18 19:38:50,123 INFO L78 Accepts]: Start accepts. Automaton has 3989 states and 16099 transitions. Word has length 10 [2022-11-18 19:38:50,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:50,124 INFO L495 AbstractCegarLoop]: Abstraction has 3989 states and 16099 transitions. [2022-11-18 19:38:50,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:50,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3989 states and 16099 transitions. [2022-11-18 19:38:50,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:38:50,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:50,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:50,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:50,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:50,338 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:50,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:50,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1186072078, now seen corresponding path program 1 times [2022-11-18 19:38:50,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:50,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424893476] [2022-11-18 19:38:50,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:50,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:50,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:50,340 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:50,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-18 19:38:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:50,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:38:50,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:50,787 INFO L321 Elim1Store]: treesize reduction 168, result has 21.1 percent of original size [2022-11-18 19:38:50,787 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 5 case distinctions, treesize of input 36 treesize of output 67 [2022-11-18 19:38:51,148 INFO L321 Elim1Store]: treesize reduction 38, result has 33.3 percent of original size [2022-11-18 19:38:51,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 40 [2022-11-18 19:38:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:38:51,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:51,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:51,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424893476] [2022-11-18 19:38:51,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424893476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:51,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:51,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:38:51,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339787636] [2022-11-18 19:38:51,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:51,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:38:51,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:38:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:38:51,426 INFO L87 Difference]: Start difference. First operand 3989 states and 16099 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:51,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:51,604 INFO L93 Difference]: Finished difference Result 4011 states and 16175 transitions. [2022-11-18 19:38:51,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:38:51,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 19:38:51,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:51,620 INFO L225 Difference]: With dead ends: 4011 [2022-11-18 19:38:51,620 INFO L226 Difference]: Without dead ends: 4011 [2022-11-18 19:38:51,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:38:51,621 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:51,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 25 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 97 Unchecked, 0.1s Time] [2022-11-18 19:38:51,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2022-11-18 19:38:51,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 3995. [2022-11-18 19:38:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3995 states, 3972 states have (on average 4.059164149043303) internal successors, (16123), 3994 states have internal predecessors, (16123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:51,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 16123 transitions. [2022-11-18 19:38:51,730 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 16123 transitions. Word has length 11 [2022-11-18 19:38:51,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:51,730 INFO L495 AbstractCegarLoop]: Abstraction has 3995 states and 16123 transitions. [2022-11-18 19:38:51,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:51,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 16123 transitions. [2022-11-18 19:38:51,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:38:51,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:51,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:51,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:51,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:51,945 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:51,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:51,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1144703818, now seen corresponding path program 2 times [2022-11-18 19:38:51,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:51,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722173057] [2022-11-18 19:38:51,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:38:51,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:51,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:51,947 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:51,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-18 19:38:52,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:38:52,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:38:52,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:38:52,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:52,321 INFO L321 Elim1Store]: treesize reduction 168, result has 21.1 percent of original size [2022-11-18 19:38:52,321 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 5 case distinctions, treesize of input 36 treesize of output 67 [2022-11-18 19:38:52,408 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 19:38:52,409 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 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-18 19:38:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:38:52,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:52,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:52,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722173057] [2022-11-18 19:38:52,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722173057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:52,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:52,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:38:52,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679371709] [2022-11-18 19:38:52,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:52,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:38:52,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:52,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:38:52,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:38:52,518 INFO L87 Difference]: Start difference. First operand 3995 states and 16123 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:52,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:52,749 INFO L93 Difference]: Finished difference Result 3912 states and 15858 transitions. [2022-11-18 19:38:52,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:38:52,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 19:38:52,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:52,760 INFO L225 Difference]: With dead ends: 3912 [2022-11-18 19:38:52,760 INFO L226 Difference]: Without dead ends: 3912 [2022-11-18 19:38:52,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:38:52,761 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 87 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:52,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 6 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:38:52,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2022-11-18 19:38:52,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3872. [2022-11-18 19:38:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3872 states, 3853 states have (on average 4.083311705164807) internal successors, (15733), 3871 states have internal predecessors, (15733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3872 states to 3872 states and 15733 transitions. [2022-11-18 19:38:52,836 INFO L78 Accepts]: Start accepts. Automaton has 3872 states and 15733 transitions. Word has length 11 [2022-11-18 19:38:52,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:52,836 INFO L495 AbstractCegarLoop]: Abstraction has 3872 states and 15733 transitions. [2022-11-18 19:38:52,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3872 states and 15733 transitions. [2022-11-18 19:38:52,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:38:52,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:52,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:52,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-11-18 19:38:53,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:53,038 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:53,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:53,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2003950034, now seen corresponding path program 1 times [2022-11-18 19:38:53,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:53,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923422281] [2022-11-18 19:38:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:53,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:53,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:53,039 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:53,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-18 19:38:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:53,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:38:53,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:53,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:53,599 INFO L321 Elim1Store]: treesize reduction 120, result has 27.7 percent of original size [2022-11-18 19:38:53,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 56 [2022-11-18 19:38:53,626 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 246 treesize of output 242 [2022-11-18 19:38:53,722 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 19:38:53,722 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:38:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:38:53,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:38:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:38:54,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:54,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923422281] [2022-11-18 19:38:54,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923422281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:38:54,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:38:54,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2022-11-18 19:38:54,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905713692] [2022-11-18 19:38:54,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:38:54,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:38:54,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:54,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:38:54,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:38:54,490 INFO L87 Difference]: Start difference. First operand 3872 states and 15733 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 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) [2022-11-18 19:38:55,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:55,150 INFO L93 Difference]: Finished difference Result 6697 states and 27607 transitions. [2022-11-18 19:38:55,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:38:55,150 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 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 [2022-11-18 19:38:55,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:55,171 INFO L225 Difference]: With dead ends: 6697 [2022-11-18 19:38:55,171 INFO L226 Difference]: Without dead ends: 6697 [2022-11-18 19:38:55,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:38:55,172 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 229 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:55,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 46 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 114 Invalid, 0 Unknown, 153 Unchecked, 0.6s Time] [2022-11-18 19:38:55,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6697 states. [2022-11-18 19:38:55,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6697 to 4028. [2022-11-18 19:38:55,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4028 states, 4011 states have (on average 4.054101221640488) internal successors, (16261), 4027 states have internal predecessors, (16261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:55,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4028 states to 4028 states and 16261 transitions. [2022-11-18 19:38:55,275 INFO L78 Accepts]: Start accepts. Automaton has 4028 states and 16261 transitions. Word has length 11 [2022-11-18 19:38:55,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:55,275 INFO L495 AbstractCegarLoop]: Abstraction has 4028 states and 16261 transitions. [2022-11-18 19:38:55,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 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) [2022-11-18 19:38:55,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4028 states and 16261 transitions. [2022-11-18 19:38:55,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:38:55,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:55,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:55,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:55,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:55,489 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:55,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:55,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1788305309, now seen corresponding path program 1 times [2022-11-18 19:38:55,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:55,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243988068] [2022-11-18 19:38:55,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:55,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:55,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:55,494 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:55,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-18 19:38:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:55,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:38:55,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:55,953 INFO L321 Elim1Store]: treesize reduction 178, result has 20.2 percent of original size [2022-11-18 19:38:55,954 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 7 case distinctions, treesize of input 49 treesize of output 78 [2022-11-18 19:38:56,250 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2022-11-18 19:38:56,251 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 3 case distinctions, treesize of input 39 treesize of output 68 [2022-11-18 19:38:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:38:56,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:56,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:56,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243988068] [2022-11-18 19:38:56,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243988068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:56,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:56,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:38:56,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935509441] [2022-11-18 19:38:56,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:56,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:38:56,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:56,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:38:56,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:38:56,650 INFO L87 Difference]: Start difference. First operand 4028 states and 16261 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:56,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:56,789 INFO L93 Difference]: Finished difference Result 4028 states and 16260 transitions. [2022-11-18 19:38:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:38:56,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 19:38:56,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:56,801 INFO L225 Difference]: With dead ends: 4028 [2022-11-18 19:38:56,801 INFO L226 Difference]: Without dead ends: 4028 [2022-11-18 19:38:56,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:38:56,801 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:56,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 64 Unchecked, 0.1s Time] [2022-11-18 19:38:56,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2022-11-18 19:38:56,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 4024. [2022-11-18 19:38:56,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4024 states, 4008 states have (on average 4.0553892215568865) internal successors, (16254), 4023 states have internal predecessors, (16254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 16254 transitions. [2022-11-18 19:38:56,878 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 16254 transitions. Word has length 11 [2022-11-18 19:38:56,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:56,878 INFO L495 AbstractCegarLoop]: Abstraction has 4024 states and 16254 transitions. [2022-11-18 19:38:56,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 16254 transitions. [2022-11-18 19:38:56,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:38:56,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:56,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:56,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-18 19:38:57,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:57,081 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:57,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:57,081 INFO L85 PathProgramCache]: Analyzing trace with hash -85962684, now seen corresponding path program 1 times [2022-11-18 19:38:57,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:57,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62280367] [2022-11-18 19:38:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:57,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:57,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:57,082 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:57,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-18 19:38:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:57,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:38:57,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:57,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:57,591 INFO L321 Elim1Store]: treesize reduction 120, result has 27.7 percent of original size [2022-11-18 19:38:57,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 56 [2022-11-18 19:38:57,620 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 1998 treesize of output 1966 [2022-11-18 19:38:57,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:57,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:38:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:57,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:57,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:57,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62280367] [2022-11-18 19:38:57,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62280367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:57,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:57,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:38:57,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379834020] [2022-11-18 19:38:57,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:57,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:38:57,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:38:57,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:38:57,909 INFO L87 Difference]: Start difference. First operand 4024 states and 16254 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:58,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:58,147 INFO L93 Difference]: Finished difference Result 4029 states and 16268 transitions. [2022-11-18 19:38:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:38:58,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 19:38:58,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:58,161 INFO L225 Difference]: With dead ends: 4029 [2022-11-18 19:38:58,161 INFO L226 Difference]: Without dead ends: 4029 [2022-11-18 19:38:58,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:38:58,162 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:58,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 37 Unchecked, 0.2s Time] [2022-11-18 19:38:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4029 states. [2022-11-18 19:38:58,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4029 to 4029. [2022-11-18 19:38:58,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4029 states, 4013 states have (on average 4.053825068527287) internal successors, (16268), 4028 states have internal predecessors, (16268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:58,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4029 states to 4029 states and 16268 transitions. [2022-11-18 19:38:58,279 INFO L78 Accepts]: Start accepts. Automaton has 4029 states and 16268 transitions. Word has length 11 [2022-11-18 19:38:58,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:58,280 INFO L495 AbstractCegarLoop]: Abstraction has 4029 states and 16268 transitions. [2022-11-18 19:38:58,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:58,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4029 states and 16268 transitions. [2022-11-18 19:38:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:38:58,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:58,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:58,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:58,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:58,494 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:58,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:58,494 INFO L85 PathProgramCache]: Analyzing trace with hash -85142114, now seen corresponding path program 1 times [2022-11-18 19:38:58,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:58,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217328056] [2022-11-18 19:38:58,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:58,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:58,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:58,495 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:58,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-18 19:38:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:58,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:38:58,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:58,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:58,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:58,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:58,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:58,964 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:38:58,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:38:58,976 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 22 treesize of output 20 [2022-11-18 19:38:59,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:38:59,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:38:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:59,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:59,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:59,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217328056] [2022-11-18 19:38:59,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217328056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:59,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:59,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:38:59,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17399360] [2022-11-18 19:38:59,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:59,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:38:59,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:59,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:38:59,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:38:59,190 INFO L87 Difference]: Start difference. First operand 4029 states and 16268 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:59,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:38:59,412 INFO L93 Difference]: Finished difference Result 4029 states and 16270 transitions. [2022-11-18 19:38:59,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:38:59,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 19:38:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:38:59,426 INFO L225 Difference]: With dead ends: 4029 [2022-11-18 19:38:59,426 INFO L226 Difference]: Without dead ends: 4029 [2022-11-18 19:38:59,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:38:59,427 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:38:59,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 37 Unchecked, 0.2s Time] [2022-11-18 19:38:59,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4029 states. [2022-11-18 19:38:59,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4029 to 4029. [2022-11-18 19:38:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4029 states, 4013 states have (on average 4.054323448791428) internal successors, (16270), 4028 states have internal predecessors, (16270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:59,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4029 states to 4029 states and 16270 transitions. [2022-11-18 19:38:59,506 INFO L78 Accepts]: Start accepts. Automaton has 4029 states and 16270 transitions. Word has length 11 [2022-11-18 19:38:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:38:59,506 INFO L495 AbstractCegarLoop]: Abstraction has 4029 states and 16270 transitions. [2022-11-18 19:38:59,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:38:59,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4029 states and 16270 transitions. [2022-11-18 19:38:59,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:38:59,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:38:59,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:38:59,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-18 19:38:59,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:59,709 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:38:59,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:38:59,709 INFO L85 PathProgramCache]: Analyzing trace with hash -84931448, now seen corresponding path program 1 times [2022-11-18 19:38:59,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:38:59,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788493697] [2022-11-18 19:38:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:38:59,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:38:59,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:38:59,711 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:38:59,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-18 19:38:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:38:59,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:38:59,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:38:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:38:59,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:38:59,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:38:59,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788493697] [2022-11-18 19:38:59,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788493697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:38:59,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:38:59,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:38:59,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284241131] [2022-11-18 19:38:59,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:38:59,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:38:59,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:38:59,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:38:59,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:38:59,962 INFO L87 Difference]: Start difference. First operand 4029 states and 16270 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:00,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:00,178 INFO L93 Difference]: Finished difference Result 3237 states and 12538 transitions. [2022-11-18 19:39:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:00,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 19:39:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:00,187 INFO L225 Difference]: With dead ends: 3237 [2022-11-18 19:39:00,187 INFO L226 Difference]: Without dead ends: 3237 [2022-11-18 19:39:00,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:00,188 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:00,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 6 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:39:00,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3237 states. [2022-11-18 19:39:00,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3237 to 3237. [2022-11-18 19:39:00,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3237 states, 3225 states have (on average 3.887751937984496) internal successors, (12538), 3236 states have internal predecessors, (12538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 12538 transitions. [2022-11-18 19:39:00,243 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 12538 transitions. Word has length 11 [2022-11-18 19:39:00,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:00,243 INFO L495 AbstractCegarLoop]: Abstraction has 3237 states and 12538 transitions. [2022-11-18 19:39:00,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:00,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 12538 transitions. [2022-11-18 19:39:00,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:39:00,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:00,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:00,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:00,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:00,457 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:39:00,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:00,457 INFO L85 PathProgramCache]: Analyzing trace with hash -85163287, now seen corresponding path program 1 times [2022-11-18 19:39:00,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:39:00,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043330367] [2022-11-18 19:39:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:00,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:00,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:39:00,458 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:39:00,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-18 19:39:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:00,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:39:00,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:00,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:00,986 INFO L321 Elim1Store]: treesize reduction 120, result has 27.7 percent of original size [2022-11-18 19:39:00,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 56 [2022-11-18 19:39:01,021 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 8022 treesize of output 7894 [2022-11-18 19:39:01,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:01,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:39:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:01,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:01,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:39:01,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043330367] [2022-11-18 19:39:01,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043330367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:01,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:01,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:39:01,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715257696] [2022-11-18 19:39:01,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:01,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:39:01,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:39:01,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:39:01,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:39:01,449 INFO L87 Difference]: Start difference. First operand 3237 states and 12538 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:01,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:01,672 INFO L93 Difference]: Finished difference Result 3243 states and 12550 transitions. [2022-11-18 19:39:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:39:01,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 19:39:01,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:01,681 INFO L225 Difference]: With dead ends: 3243 [2022-11-18 19:39:01,681 INFO L226 Difference]: Without dead ends: 3243 [2022-11-18 19:39:01,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:39:01,682 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:01,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 36 Unchecked, 0.2s Time] [2022-11-18 19:39:01,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2022-11-18 19:39:01,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 3243. [2022-11-18 19:39:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 3231 states have (on average 3.8842463633549986) internal successors, (12550), 3242 states have internal predecessors, (12550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 12550 transitions. [2022-11-18 19:39:01,741 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 12550 transitions. Word has length 11 [2022-11-18 19:39:01,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:01,741 INFO L495 AbstractCegarLoop]: Abstraction has 3243 states and 12550 transitions. [2022-11-18 19:39:01,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 12550 transitions. [2022-11-18 19:39:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:39:01,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:01,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:01,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Ended with exit code 0 [2022-11-18 19:39:01,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:01,942 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:39:01,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:01,942 INFO L85 PathProgramCache]: Analyzing trace with hash -740140906, now seen corresponding path program 1 times [2022-11-18 19:39:01,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:39:01,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311897996] [2022-11-18 19:39:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:01,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:01,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:39:01,944 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:39:01,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-18 19:39:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:02,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:39:02,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:02,180 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 19:39:02,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:02,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:03,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:39:03,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311897996] [2022-11-18 19:39:03,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311897996] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:39:03,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:39:03,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-18 19:39:03,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780396906] [2022-11-18 19:39:03,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:03,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:39:03,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:39:03,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:39:03,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:39:03,404 INFO L87 Difference]: Start difference. First operand 3243 states and 12550 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:04,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:04,445 INFO L93 Difference]: Finished difference Result 3320 states and 12866 transitions. [2022-11-18 19:39:04,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:39:04,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 19:39:04,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:04,455 INFO L225 Difference]: With dead ends: 3320 [2022-11-18 19:39:04,455 INFO L226 Difference]: Without dead ends: 3320 [2022-11-18 19:39:04,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:39:04,455 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:04,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 43 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 77 Unchecked, 0.2s Time] [2022-11-18 19:39:04,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2022-11-18 19:39:04,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 3320. [2022-11-18 19:39:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3308 states have (on average 3.889359129383313) internal successors, (12866), 3319 states have internal predecessors, (12866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:04,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 12866 transitions. [2022-11-18 19:39:04,524 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 12866 transitions. Word has length 11 [2022-11-18 19:39:04,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:04,524 INFO L495 AbstractCegarLoop]: Abstraction has 3320 states and 12866 transitions. [2022-11-18 19:39:04,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:04,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 12866 transitions. [2022-11-18 19:39:04,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:39:04,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:04,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:04,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Ended with exit code 0 [2022-11-18 19:39:04,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:04,726 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:39:04,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:04,726 INFO L85 PathProgramCache]: Analyzing trace with hash -747563825, now seen corresponding path program 1 times [2022-11-18 19:39:04,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:39:04,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101438138] [2022-11-18 19:39:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:04,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:04,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:39:04,728 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:39:04,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-18 19:39:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:04,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:39:04,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:04,965 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 19:39:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:05,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:06,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:39:06,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101438138] [2022-11-18 19:39:06,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101438138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:39:06,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:39:06,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-18 19:39:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689289811] [2022-11-18 19:39:06,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:06,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:39:06,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:39:06,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:39:06,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:39:06,510 INFO L87 Difference]: Start difference. First operand 3320 states and 12866 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:08,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:08,752 INFO L93 Difference]: Finished difference Result 3334 states and 12891 transitions. [2022-11-18 19:39:08,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:39:08,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 19:39:08,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:08,765 INFO L225 Difference]: With dead ends: 3334 [2022-11-18 19:39:08,765 INFO L226 Difference]: Without dead ends: 3334 [2022-11-18 19:39:08,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:39:08,765 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:08,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 33 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 103 Unchecked, 0.2s Time] [2022-11-18 19:39:08,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2022-11-18 19:39:08,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 3324. [2022-11-18 19:39:08,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 3312 states have (on average 3.886775362318841) internal successors, (12873), 3323 states have internal predecessors, (12873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:08,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 12873 transitions. [2022-11-18 19:39:08,854 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 12873 transitions. Word has length 11 [2022-11-18 19:39:08,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:08,854 INFO L495 AbstractCegarLoop]: Abstraction has 3324 states and 12873 transitions. [2022-11-18 19:39:08,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:08,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 12873 transitions. [2022-11-18 19:39:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:39:08,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:08,856 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:08,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:09,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:09,070 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:39:09,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:09,070 INFO L85 PathProgramCache]: Analyzing trace with hash -180921039, now seen corresponding path program 2 times [2022-11-18 19:39:09,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:39:09,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553061801] [2022-11-18 19:39:09,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:39:09,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:09,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:39:09,072 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:39:09,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-18 19:39:09,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:39:09,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:39:09,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:39:09,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:09,335 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 19:39:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:39:09,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:09,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:39:09,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553061801] [2022-11-18 19:39:09,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553061801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:09,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:09,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:09,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044768135] [2022-11-18 19:39:09,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:09,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:39:09,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:39:09,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:39:09,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:39:09,473 INFO L87 Difference]: Start difference. First operand 3324 states and 12873 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:09,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:09,760 INFO L93 Difference]: Finished difference Result 2599 states and 9885 transitions. [2022-11-18 19:39:09,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:39:09,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 19:39:09,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:09,768 INFO L225 Difference]: With dead ends: 2599 [2022-11-18 19:39:09,768 INFO L226 Difference]: Without dead ends: 2599 [2022-11-18 19:39:09,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:39:09,768 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:09,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 6 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:39:09,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2022-11-18 19:39:09,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 2509. [2022-11-18 19:39:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2504 states have (on average 3.805111821086262) internal successors, (9528), 2508 states have internal predecessors, (9528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 9528 transitions. [2022-11-18 19:39:09,817 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 9528 transitions. Word has length 11 [2022-11-18 19:39:09,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:09,818 INFO L495 AbstractCegarLoop]: Abstraction has 2509 states and 9528 transitions. [2022-11-18 19:39:09,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:09,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 9528 transitions. [2022-11-18 19:39:09,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 19:39:09,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:09,819 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-18 19:39:09,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:10,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:10,032 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:39:10,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:10,032 INFO L85 PathProgramCache]: Analyzing trace with hash -898192920, now seen corresponding path program 3 times [2022-11-18 19:39:10,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:39:10,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859099867] [2022-11-18 19:39:10,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:39:10,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:10,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:39:10,034 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:39:10,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-18 19:39:10,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 19:39:10,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:39:10,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:39:10,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:10,633 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-18 19:39:10,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-18 19:39:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:11,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:14,534 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:14,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:39:14,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859099867] [2022-11-18 19:39:14,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859099867] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:39:14,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:39:14,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-18 19:39:14,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483844897] [2022-11-18 19:39:14,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:14,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 19:39:14,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:39:14,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 19:39:14,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:39:14,537 INFO L87 Difference]: Start difference. First operand 2509 states and 9528 transitions. Second operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:27,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:29,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:31,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:33,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:35,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:37,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:39,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:41,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:43,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:45,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:39:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:58,118 INFO L93 Difference]: Finished difference Result 18476 states and 73744 transitions. [2022-11-18 19:39:58,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:39:58,120 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 19:39:58,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:58,195 INFO L225 Difference]: With dead ends: 18476 [2022-11-18 19:39:58,195 INFO L226 Difference]: Without dead ends: 18476 [2022-11-18 19:39:58,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:39:58,195 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 2725 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 4166 mSolverCounterSat, 233 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2725 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 4408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 4166 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:58,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2725 Valid, 775 Invalid, 4408 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [233 Valid, 4166 Invalid, 9 Unknown, 0 Unchecked, 30.6s Time] [2022-11-18 19:39:58,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18476 states. [2022-11-18 19:39:58,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18476 to 2521. [2022-11-18 19:39:58,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 2516 states have (on average 3.796502384737679) internal successors, (9552), 2520 states have internal predecessors, (9552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 9552 transitions. [2022-11-18 19:39:58,359 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 9552 transitions. Word has length 12 [2022-11-18 19:39:58,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:58,359 INFO L495 AbstractCegarLoop]: Abstraction has 2521 states and 9552 transitions. [2022-11-18 19:39:58,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:58,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 9552 transitions. [2022-11-18 19:39:58,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 19:39:58,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:58,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:58,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Ended with exit code 0 [2022-11-18 19:39:58,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:58,561 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:39:58,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:58,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1647101914, now seen corresponding path program 1 times [2022-11-18 19:39:58,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:39:58,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993204123] [2022-11-18 19:39:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:58,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:58,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:39:58,563 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:39:58,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-18 19:39:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:58,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:39:58,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:39:58,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:39:58,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:39:58,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993204123] [2022-11-18 19:39:58,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993204123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:58,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:58,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:39:58,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430769714] [2022-11-18 19:39:58,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:58,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:58,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:39:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:58,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:58,846 INFO L87 Difference]: Start difference. First operand 2521 states and 9552 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:59,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:39:59,164 INFO L93 Difference]: Finished difference Result 3158 states and 11713 transitions. [2022-11-18 19:39:59,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:59,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 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 12 [2022-11-18 19:39:59,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:39:59,174 INFO L225 Difference]: With dead ends: 3158 [2022-11-18 19:39:59,174 INFO L226 Difference]: Without dead ends: 3158 [2022-11-18 19:39:59,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:59,175 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:39:59,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 8 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:39:59,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2022-11-18 19:39:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 2584. [2022-11-18 19:39:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2579 states have (on average 3.8352074447460254) internal successors, (9891), 2583 states have internal predecessors, (9891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:59,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 9891 transitions. [2022-11-18 19:39:59,231 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 9891 transitions. Word has length 12 [2022-11-18 19:39:59,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:39:59,231 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 9891 transitions. [2022-11-18 19:39:59,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:59,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 9891 transitions. [2022-11-18 19:39:59,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 19:39:59,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:39:59,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:59,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:59,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:59,433 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:39:59,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:59,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1647123738, now seen corresponding path program 1 times [2022-11-18 19:39:59,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:39:59,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512654533] [2022-11-18 19:39:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:59,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:39:59,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:39:59,434 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:39:59,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-18 19:39:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:59,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 19:39:59,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:59,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:59,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:59,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:59,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:39:59,984 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:39:59,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:39:59,996 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 22 treesize of output 20 [2022-11-18 19:40:00,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:00,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:40:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:00,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:00,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:00,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512654533] [2022-11-18 19:40:00,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512654533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:00,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:00,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:00,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136686450] [2022-11-18 19:40:00,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:00,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:00,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:00,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:00,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:00,225 INFO L87 Difference]: Start difference. First operand 2584 states and 9891 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:00,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:00,411 INFO L93 Difference]: Finished difference Result 2594 states and 9925 transitions. [2022-11-18 19:40:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:00,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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 12 [2022-11-18 19:40:00,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:00,418 INFO L225 Difference]: With dead ends: 2594 [2022-11-18 19:40:00,418 INFO L226 Difference]: Without dead ends: 2594 [2022-11-18 19:40:00,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:00,419 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:00,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2022-11-18 19:40:00,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2022-11-18 19:40:00,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 2594. [2022-11-18 19:40:00,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2594 states, 2589 states have (on average 3.8335264580919275) internal successors, (9925), 2593 states have internal predecessors, (9925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 9925 transitions. [2022-11-18 19:40:00,464 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 9925 transitions. Word has length 12 [2022-11-18 19:40:00,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:00,464 INFO L495 AbstractCegarLoop]: Abstraction has 2594 states and 9925 transitions. [2022-11-18 19:40:00,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:00,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 9925 transitions. [2022-11-18 19:40:00,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 19:40:00,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:00,466 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:00,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-18 19:40:00,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:00,671 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:00,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:00,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1313346481, now seen corresponding path program 2 times [2022-11-18 19:40:00,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:00,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802298110] [2022-11-18 19:40:00,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:40:00,671 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 [2022-11-18 19:40:00,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:00,678 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:00,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-18 19:40:00,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:40:00,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:00,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:40:00,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:00,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:00,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:00,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:00,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:01,148 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:40:01,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:40:01,158 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 22 treesize of output 20 [2022-11-18 19:40:01,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:01,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:40:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:40:01,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:01,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:01,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802298110] [2022-11-18 19:40:01,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802298110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:01,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:01,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:01,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407947249] [2022-11-18 19:40:01,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:01,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:01,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:01,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:01,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:01,401 INFO L87 Difference]: Start difference. First operand 2594 states and 9925 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:01,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:01,586 INFO L93 Difference]: Finished difference Result 2618 states and 10043 transitions. [2022-11-18 19:40:01,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:01,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 12 [2022-11-18 19:40:01,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:01,593 INFO L225 Difference]: With dead ends: 2618 [2022-11-18 19:40:01,593 INFO L226 Difference]: Without dead ends: 2618 [2022-11-18 19:40:01,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:01,594 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:01,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 18 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2022-11-18 19:40:01,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-11-18 19:40:01,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2602. [2022-11-18 19:40:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2597 states have (on average 3.837889872930304) internal successors, (9967), 2601 states have internal predecessors, (9967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 9967 transitions. [2022-11-18 19:40:01,643 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 9967 transitions. Word has length 12 [2022-11-18 19:40:01,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:01,644 INFO L495 AbstractCegarLoop]: Abstraction has 2602 states and 9967 transitions. [2022-11-18 19:40:01,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:01,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 9967 transitions. [2022-11-18 19:40:01,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:40:01,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:01,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:01,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Ended with exit code 0 [2022-11-18 19:40:01,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:01,845 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:01,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash 478769515, now seen corresponding path program 1 times [2022-11-18 19:40:01,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:01,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207154000] [2022-11-18 19:40:01,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:01,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:01,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:01,847 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:01,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-18 19:40:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:02,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:40:02,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:02,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:02,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:02,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:02,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:02,418 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:40:02,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:40:02,430 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 22 treesize of output 20 [2022-11-18 19:40:02,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:02,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:40:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:02,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:02,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:02,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207154000] [2022-11-18 19:40:02,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207154000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:02,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:02,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:02,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134839131] [2022-11-18 19:40:02,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:02,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:02,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:02,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:02,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:02,677 INFO L87 Difference]: Start difference. First operand 2602 states and 9967 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:02,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:02,892 INFO L93 Difference]: Finished difference Result 2602 states and 9971 transitions. [2022-11-18 19:40:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:02,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 19:40:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:02,899 INFO L225 Difference]: With dead ends: 2602 [2022-11-18 19:40:02,899 INFO L226 Difference]: Without dead ends: 2602 [2022-11-18 19:40:02,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:02,900 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:02,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-18 19:40:02,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2022-11-18 19:40:02,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2592. [2022-11-18 19:40:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2587 states have (on average 3.8411287205257056) internal successors, (9937), 2591 states have internal predecessors, (9937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:02,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 9937 transitions. [2022-11-18 19:40:02,941 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 9937 transitions. Word has length 13 [2022-11-18 19:40:02,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:02,942 INFO L495 AbstractCegarLoop]: Abstraction has 2592 states and 9937 transitions. [2022-11-18 19:40:02,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:02,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 9937 transitions. [2022-11-18 19:40:02,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:40:02,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:02,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:02,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Ended with exit code 0 [2022-11-18 19:40:03,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:03,143 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:03,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:03,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1005943465, now seen corresponding path program 1 times [2022-11-18 19:40:03,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:03,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474153402] [2022-11-18 19:40:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:03,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:03,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:03,145 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:03,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-18 19:40:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:03,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:40:03,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:03,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:03,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:03,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:03,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:03,632 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:40:03,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:40:03,643 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 22 treesize of output 20 [2022-11-18 19:40:03,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:03,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:40:03,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:03,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:03,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:03,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474153402] [2022-11-18 19:40:03,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474153402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:03,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:03,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:03,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901534283] [2022-11-18 19:40:03,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:03,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:03,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:03,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:03,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:03,922 INFO L87 Difference]: Start difference. First operand 2592 states and 9937 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:04,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:04,145 INFO L93 Difference]: Finished difference Result 2593 states and 9937 transitions. [2022-11-18 19:40:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:04,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 19:40:04,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:04,154 INFO L225 Difference]: With dead ends: 2593 [2022-11-18 19:40:04,154 INFO L226 Difference]: Without dead ends: 2593 [2022-11-18 19:40:04,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:04,154 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:04,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-18 19:40:04,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2022-11-18 19:40:04,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2593. [2022-11-18 19:40:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 2588 states have (on average 3.839644513137558) internal successors, (9937), 2592 states have internal predecessors, (9937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:04,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 9937 transitions. [2022-11-18 19:40:04,214 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 9937 transitions. Word has length 13 [2022-11-18 19:40:04,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:04,214 INFO L495 AbstractCegarLoop]: Abstraction has 2593 states and 9937 transitions. [2022-11-18 19:40:04,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 9937 transitions. [2022-11-18 19:40:04,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:40:04,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:04,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:04,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Ended with exit code 0 [2022-11-18 19:40:04,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:04,417 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:04,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:04,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1005964638, now seen corresponding path program 1 times [2022-11-18 19:40:04,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:04,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967960215] [2022-11-18 19:40:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:04,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:04,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:04,419 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:04,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-18 19:40:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:04,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:40:04,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:04,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:04,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:04,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:04,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:04,925 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:40:04,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:40:04,936 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 22 treesize of output 20 [2022-11-18 19:40:04,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:04,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:40:05,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:05,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:05,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:05,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967960215] [2022-11-18 19:40:05,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967960215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:05,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:05,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:05,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915034146] [2022-11-18 19:40:05,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:05,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:05,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:05,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:05,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:05,172 INFO L87 Difference]: Start difference. First operand 2593 states and 9937 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:05,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:05,435 INFO L93 Difference]: Finished difference Result 2593 states and 9935 transitions. [2022-11-18 19:40:05,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:05,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 19:40:05,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:05,442 INFO L225 Difference]: With dead ends: 2593 [2022-11-18 19:40:05,442 INFO L226 Difference]: Without dead ends: 2593 [2022-11-18 19:40:05,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:05,442 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:05,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-18 19:40:05,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2022-11-18 19:40:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2593. [2022-11-18 19:40:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 2588 states have (on average 3.83887171561051) internal successors, (9935), 2592 states have internal predecessors, (9935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:05,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 9935 transitions. [2022-11-18 19:40:05,483 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 9935 transitions. Word has length 13 [2022-11-18 19:40:05,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:05,483 INFO L495 AbstractCegarLoop]: Abstraction has 2593 states and 9935 transitions. [2022-11-18 19:40:05,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:05,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 9935 transitions. [2022-11-18 19:40:05,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:40:05,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:05,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:05,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Ended with exit code 0 [2022-11-18 19:40:05,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:05,685 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:05,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:05,685 INFO L85 PathProgramCache]: Analyzing trace with hash -217396868, now seen corresponding path program 1 times [2022-11-18 19:40:05,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:05,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704585118] [2022-11-18 19:40:05,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:05,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:05,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:05,686 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:05,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2022-11-18 19:40:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:05,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:40:05,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:05,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:05,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:06,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:06,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:06,158 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:40:06,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:40:06,169 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 22 treesize of output 20 [2022-11-18 19:40:06,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:06,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:40:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:06,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:06,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:06,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704585118] [2022-11-18 19:40:06,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704585118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:06,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:06,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:06,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473958007] [2022-11-18 19:40:06,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:06,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:06,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:06,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:06,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:06,449 INFO L87 Difference]: Start difference. First operand 2593 states and 9935 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:06,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:06,648 INFO L93 Difference]: Finished difference Result 2595 states and 9939 transitions. [2022-11-18 19:40:06,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:06,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 19:40:06,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:06,655 INFO L225 Difference]: With dead ends: 2595 [2022-11-18 19:40:06,655 INFO L226 Difference]: Without dead ends: 2595 [2022-11-18 19:40:06,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:06,655 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:06,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-18 19:40:06,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2022-11-18 19:40:06,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2595. [2022-11-18 19:40:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2595 states, 2590 states have (on average 3.8374517374517376) internal successors, (9939), 2594 states have internal predecessors, (9939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2595 states to 2595 states and 9939 transitions. [2022-11-18 19:40:06,700 INFO L78 Accepts]: Start accepts. Automaton has 2595 states and 9939 transitions. Word has length 13 [2022-11-18 19:40:06,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:06,701 INFO L495 AbstractCegarLoop]: Abstraction has 2595 states and 9939 transitions. [2022-11-18 19:40:06,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2595 states and 9939 transitions. [2022-11-18 19:40:06,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:06,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:06,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:06,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Ended with exit code 0 [2022-11-18 19:40:06,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:06,903 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:06,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:06,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1193357151, now seen corresponding path program 1 times [2022-11-18 19:40:06,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:06,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997990772] [2022-11-18 19:40:06,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:06,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:06,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:06,904 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:06,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-18 19:40:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:07,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:40:07,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:07,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:07,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:07,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997990772] [2022-11-18 19:40:07,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997990772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:07,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:07,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:40:07,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906792536] [2022-11-18 19:40:07,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:07,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:40:07,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:07,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:40:07,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:40:07,371 INFO L87 Difference]: Start difference. First operand 2595 states and 9939 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:08,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:08,821 INFO L93 Difference]: Finished difference Result 3934 states and 14839 transitions. [2022-11-18 19:40:08,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:40:08,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 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 14 [2022-11-18 19:40:08,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:08,834 INFO L225 Difference]: With dead ends: 3934 [2022-11-18 19:40:08,834 INFO L226 Difference]: Without dead ends: 3934 [2022-11-18 19:40:08,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:40:08,835 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 176 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:08,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 1 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:40:08,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2022-11-18 19:40:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3039. [2022-11-18 19:40:08,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3039 states, 3034 states have (on average 3.895847066578774) internal successors, (11820), 3038 states have internal predecessors, (11820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 11820 transitions. [2022-11-18 19:40:08,901 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 11820 transitions. Word has length 14 [2022-11-18 19:40:08,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:08,901 INFO L495 AbstractCegarLoop]: Abstraction has 3039 states and 11820 transitions. [2022-11-18 19:40:08,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:08,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 11820 transitions. [2022-11-18 19:40:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:08,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:08,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:08,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Ended with exit code 0 [2022-11-18 19:40:09,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:09,103 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:09,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:09,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1023080661, now seen corresponding path program 2 times [2022-11-18 19:40:09,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:09,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257872549] [2022-11-18 19:40:09,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:40:09,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:09,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:09,104 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:09,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-18 19:40:09,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:40:09,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:09,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:40:09,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:09,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:09,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:09,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257872549] [2022-11-18 19:40:09,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257872549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:09,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:09,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:40:09,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697641254] [2022-11-18 19:40:09,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:09,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:40:09,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:09,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:40:09,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:40:09,619 INFO L87 Difference]: Start difference. First operand 3039 states and 11820 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:11,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:11,026 INFO L93 Difference]: Finished difference Result 5507 states and 20496 transitions. [2022-11-18 19:40:11,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:40:11,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 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 14 [2022-11-18 19:40:11,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:11,044 INFO L225 Difference]: With dead ends: 5507 [2022-11-18 19:40:11,044 INFO L226 Difference]: Without dead ends: 5495 [2022-11-18 19:40:11,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:40:11,045 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 198 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:11,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:40:11,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2022-11-18 19:40:11,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 3677. [2022-11-18 19:40:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3670 states have (on average 3.9158038147138963) internal successors, (14371), 3676 states have internal predecessors, (14371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:11,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 14371 transitions. [2022-11-18 19:40:11,152 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 14371 transitions. Word has length 14 [2022-11-18 19:40:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:11,152 INFO L495 AbstractCegarLoop]: Abstraction has 3677 states and 14371 transitions. [2022-11-18 19:40:11,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 14371 transitions. [2022-11-18 19:40:11,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:11,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:11,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:11,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:11,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:11,367 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:11,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:11,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1023231321, now seen corresponding path program 3 times [2022-11-18 19:40:11,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:11,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466492630] [2022-11-18 19:40:11,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:40:11,368 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:11,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:11,369 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:11,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2022-11-18 19:40:11,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 19:40:11,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:11,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:40:11,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:11,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:11,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:11,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466492630] [2022-11-18 19:40:11,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466492630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:11,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:11,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:40:11,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672589868] [2022-11-18 19:40:11,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:11,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:40:11,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:11,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:40:11,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:40:11,832 INFO L87 Difference]: Start difference. First operand 3677 states and 14371 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:13,565 INFO L93 Difference]: Finished difference Result 5187 states and 19070 transitions. [2022-11-18 19:40:13,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:40:13,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 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 14 [2022-11-18 19:40:13,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:13,582 INFO L225 Difference]: With dead ends: 5187 [2022-11-18 19:40:13,582 INFO L226 Difference]: Without dead ends: 5187 [2022-11-18 19:40:13,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:40:13,583 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 193 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:13,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 3 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:40:13,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5187 states. [2022-11-18 19:40:13,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5187 to 3737. [2022-11-18 19:40:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 3730 states have (on average 3.9091152815013404) internal successors, (14581), 3736 states have internal predecessors, (14581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 14581 transitions. [2022-11-18 19:40:13,673 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 14581 transitions. Word has length 14 [2022-11-18 19:40:13,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:13,673 INFO L495 AbstractCegarLoop]: Abstraction has 3737 states and 14581 transitions. [2022-11-18 19:40:13,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:13,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 14581 transitions. [2022-11-18 19:40:13,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:13,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:13,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:13,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:13,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:13,876 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:13,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:13,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1981924921, now seen corresponding path program 1 times [2022-11-18 19:40:13,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:13,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901993700] [2022-11-18 19:40:13,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:13,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:13,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:13,877 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:13,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-18 19:40:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:14,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:40:14,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:14,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:14,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:14,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901993700] [2022-11-18 19:40:14,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901993700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:14,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:14,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:40:14,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183291760] [2022-11-18 19:40:14,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:14,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:40:14,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:14,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:40:14,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:14,199 INFO L87 Difference]: Start difference. First operand 3737 states and 14581 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:15,459 INFO L93 Difference]: Finished difference Result 5174 states and 20109 transitions. [2022-11-18 19:40:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:40:15,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 14 [2022-11-18 19:40:15,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:15,479 INFO L225 Difference]: With dead ends: 5174 [2022-11-18 19:40:15,480 INFO L226 Difference]: Without dead ends: 5174 [2022-11-18 19:40:15,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:40:15,480 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 86 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:15,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 14 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:40:15,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5174 states. [2022-11-18 19:40:15,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5174 to 3649. [2022-11-18 19:40:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3649 states, 3642 states have (on average 3.9206479956068097) internal successors, (14279), 3648 states have internal predecessors, (14279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:15,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 14279 transitions. [2022-11-18 19:40:15,600 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 14279 transitions. Word has length 14 [2022-11-18 19:40:15,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:15,601 INFO L495 AbstractCegarLoop]: Abstraction has 3649 states and 14279 transitions. [2022-11-18 19:40:15,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:15,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 14279 transitions. [2022-11-18 19:40:15,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:15,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:15,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:15,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:15,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:15,816 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:15,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:15,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1975230781, now seen corresponding path program 2 times [2022-11-18 19:40:15,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:15,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723332735] [2022-11-18 19:40:15,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:40:15,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:15,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:15,817 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:15,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-18 19:40:16,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:40:16,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:16,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:40:16,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:16,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:16,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:16,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:16,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723332735] [2022-11-18 19:40:16,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723332735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:16,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:16,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:40:16,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203084494] [2022-11-18 19:40:16,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:16,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:40:16,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:16,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:40:16,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:16,162 INFO L87 Difference]: Start difference. First operand 3649 states and 14279 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:17,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:17,159 INFO L93 Difference]: Finished difference Result 7282 states and 28042 transitions. [2022-11-18 19:40:17,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:40:17,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 14 [2022-11-18 19:40:17,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:17,188 INFO L225 Difference]: With dead ends: 7282 [2022-11-18 19:40:17,188 INFO L226 Difference]: Without dead ends: 7282 [2022-11-18 19:40:17,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:40:17,189 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 111 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:17,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 15 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:40:17,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2022-11-18 19:40:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 4223. [2022-11-18 19:40:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4223 states, 4216 states have (on average 3.967504743833017) internal successors, (16727), 4222 states have internal predecessors, (16727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:17,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4223 states to 4223 states and 16727 transitions. [2022-11-18 19:40:17,353 INFO L78 Accepts]: Start accepts. Automaton has 4223 states and 16727 transitions. Word has length 14 [2022-11-18 19:40:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:17,354 INFO L495 AbstractCegarLoop]: Abstraction has 4223 states and 16727 transitions. [2022-11-18 19:40:17,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 4223 states and 16727 transitions. [2022-11-18 19:40:17,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:17,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:17,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:17,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:17,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:17,568 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:17,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:17,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1975226472, now seen corresponding path program 1 times [2022-11-18 19:40:17,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:17,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19301935] [2022-11-18 19:40:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:17,569 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:17,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:17,570 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:17,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-18 19:40:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:17,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:40:17,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:17,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:17,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:17,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:17,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:18,158 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:40:18,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:40:18,172 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 22 treesize of output 20 [2022-11-18 19:40:18,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:18,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:40:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:18,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:18,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:18,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19301935] [2022-11-18 19:40:18,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19301935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:18,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:18,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:18,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107240637] [2022-11-18 19:40:18,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:18,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:18,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:18,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:18,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:18,470 INFO L87 Difference]: Start difference. First operand 4223 states and 16727 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:18,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:18,699 INFO L93 Difference]: Finished difference Result 4226 states and 16730 transitions. [2022-11-18 19:40:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:18,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 14 [2022-11-18 19:40:18,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:18,711 INFO L225 Difference]: With dead ends: 4226 [2022-11-18 19:40:18,712 INFO L226 Difference]: Without dead ends: 4226 [2022-11-18 19:40:18,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:18,712 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:18,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-18 19:40:18,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2022-11-18 19:40:18,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4226. [2022-11-18 19:40:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4219 states have (on average 3.965394643280398) internal successors, (16730), 4225 states have internal predecessors, (16730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:18,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 16730 transitions. [2022-11-18 19:40:18,797 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 16730 transitions. Word has length 14 [2022-11-18 19:40:18,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:18,798 INFO L495 AbstractCegarLoop]: Abstraction has 4226 states and 16730 transitions. [2022-11-18 19:40:18,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:18,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 16730 transitions. [2022-11-18 19:40:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:18,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:18,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:18,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Ended with exit code 0 [2022-11-18 19:40:19,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:19,000 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:19,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:19,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1975380511, now seen corresponding path program 3 times [2022-11-18 19:40:19,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:19,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74682418] [2022-11-18 19:40:19,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:40:19,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:19,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:19,002 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:19,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-18 19:40:19,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 19:40:19,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:19,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:40:19,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:19,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:19,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:19,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:19,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74682418] [2022-11-18 19:40:19,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74682418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:19,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:19,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:40:19,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974858431] [2022-11-18 19:40:19,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:19,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:40:19,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:19,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:40:19,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:19,347 INFO L87 Difference]: Start difference. First operand 4226 states and 16730 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:20,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:20,575 INFO L93 Difference]: Finished difference Result 6228 states and 24159 transitions. [2022-11-18 19:40:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:40:20,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 14 [2022-11-18 19:40:20,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:20,594 INFO L225 Difference]: With dead ends: 6228 [2022-11-18 19:40:20,594 INFO L226 Difference]: Without dead ends: 6228 [2022-11-18 19:40:20,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:40:20,595 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 108 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:20,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 20 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:40:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6228 states. [2022-11-18 19:40:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6228 to 4226. [2022-11-18 19:40:20,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4219 states have (on average 3.965394643280398) internal successors, (16730), 4225 states have internal predecessors, (16730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 16730 transitions. [2022-11-18 19:40:20,691 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 16730 transitions. Word has length 14 [2022-11-18 19:40:20,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:20,692 INFO L495 AbstractCegarLoop]: Abstraction has 4226 states and 16730 transitions. [2022-11-18 19:40:20,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 16730 transitions. [2022-11-18 19:40:20,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:20,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:20,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:20,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Ended with exit code 0 [2022-11-18 19:40:20,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:20,895 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:20,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:20,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1956837241, now seen corresponding path program 4 times [2022-11-18 19:40:20,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:20,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614281497] [2022-11-18 19:40:20,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:40:20,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:20,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:20,896 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:20,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-18 19:40:21,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:40:21,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:21,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:40:21,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:21,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:21,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:21,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614281497] [2022-11-18 19:40:21,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614281497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:21,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:21,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:40:21,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810271515] [2022-11-18 19:40:21,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:21,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:40:21,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:40:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:21,236 INFO L87 Difference]: Start difference. First operand 4226 states and 16730 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:22,261 INFO L93 Difference]: Finished difference Result 5148 states and 20416 transitions. [2022-11-18 19:40:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:40:22,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 14 [2022-11-18 19:40:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:22,278 INFO L225 Difference]: With dead ends: 5148 [2022-11-18 19:40:22,278 INFO L226 Difference]: Without dead ends: 5148 [2022-11-18 19:40:22,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:40:22,278 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 87 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:22,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 9 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:40:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5148 states. [2022-11-18 19:40:22,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5148 to 4238. [2022-11-18 19:40:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 4231 states have (on average 3.9652564405577877) internal successors, (16777), 4237 states have internal predecessors, (16777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 16777 transitions. [2022-11-18 19:40:22,367 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 16777 transitions. Word has length 14 [2022-11-18 19:40:22,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:22,368 INFO L495 AbstractCegarLoop]: Abstraction has 4238 states and 16777 transitions. [2022-11-18 19:40:22,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:22,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 16777 transitions. [2022-11-18 19:40:22,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:22,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:22,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:22,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Ended with exit code 0 [2022-11-18 19:40:22,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:22,570 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:22,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:22,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1956826701, now seen corresponding path program 4 times [2022-11-18 19:40:22,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:22,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328021381] [2022-11-18 19:40:22,570 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:40:22,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:22,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:22,571 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:22,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2022-11-18 19:40:22,885 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:40:22,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:22,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:40:22,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:23,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:23,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:23,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328021381] [2022-11-18 19:40:23,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328021381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:23,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:23,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:40:23,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593675911] [2022-11-18 19:40:23,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:23,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:40:23,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:23,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:40:23,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:40:23,128 INFO L87 Difference]: Start difference. First operand 4238 states and 16777 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:24,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:24,556 INFO L93 Difference]: Finished difference Result 6635 states and 25954 transitions. [2022-11-18 19:40:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:40:24,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 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 14 [2022-11-18 19:40:24,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:24,578 INFO L225 Difference]: With dead ends: 6635 [2022-11-18 19:40:24,578 INFO L226 Difference]: Without dead ends: 6605 [2022-11-18 19:40:24,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:40:24,578 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 154 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:24,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 0 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:40:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6605 states. [2022-11-18 19:40:24,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6605 to 4158. [2022-11-18 19:40:24,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4158 states, 4151 states have (on average 3.9494097807757167) internal successors, (16394), 4157 states have internal predecessors, (16394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4158 states to 4158 states and 16394 transitions. [2022-11-18 19:40:24,677 INFO L78 Accepts]: Start accepts. Automaton has 4158 states and 16394 transitions. Word has length 14 [2022-11-18 19:40:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:24,677 INFO L495 AbstractCegarLoop]: Abstraction has 4158 states and 16394 transitions. [2022-11-18 19:40:24,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4158 states and 16394 transitions. [2022-11-18 19:40:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:24,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:24,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:24,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Ended with exit code 0 [2022-11-18 19:40:24,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:24,879 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:24,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:24,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1956953491, now seen corresponding path program 1 times [2022-11-18 19:40:24,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:24,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585106530] [2022-11-18 19:40:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:24,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:24,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:24,890 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:24,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-18 19:40:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:25,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:40:25,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:25,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:25,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:25,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:25,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:25,507 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:40:25,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:40:25,518 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 22 treesize of output 20 [2022-11-18 19:40:25,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:25,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:40:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:40:25,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:25,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:25,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585106530] [2022-11-18 19:40:25,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585106530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:25,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:25,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:25,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386947488] [2022-11-18 19:40:25,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:25,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:25,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:25,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:25,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:25,760 INFO L87 Difference]: Start difference. First operand 4158 states and 16394 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:25,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:25,972 INFO L93 Difference]: Finished difference Result 4161 states and 16405 transitions. [2022-11-18 19:40:25,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:25,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 14 [2022-11-18 19:40:25,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:25,984 INFO L225 Difference]: With dead ends: 4161 [2022-11-18 19:40:25,984 INFO L226 Difference]: Without dead ends: 4161 [2022-11-18 19:40:25,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:25,985 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:25,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-18 19:40:25,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4161 states. [2022-11-18 19:40:26,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4161 to 4161. [2022-11-18 19:40:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4161 states, 4154 states have (on average 3.9492055849783343) internal successors, (16405), 4160 states have internal predecessors, (16405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 16405 transitions. [2022-11-18 19:40:26,063 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 16405 transitions. Word has length 14 [2022-11-18 19:40:26,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:26,063 INFO L495 AbstractCegarLoop]: Abstraction has 4161 states and 16405 transitions. [2022-11-18 19:40:26,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 16405 transitions. [2022-11-18 19:40:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:26,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:26,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:26,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (82)] Ended with exit code 0 [2022-11-18 19:40:26,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:26,265 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:26,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:26,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1955568721, now seen corresponding path program 5 times [2022-11-18 19:40:26,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:26,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634921888] [2022-11-18 19:40:26,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:40:26,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:26,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:26,267 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:26,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-18 19:40:26,543 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:40:26,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:26,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:40:26,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:26,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:26,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:26,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634921888] [2022-11-18 19:40:26,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634921888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:26,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:26,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:40:26,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302921273] [2022-11-18 19:40:26,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:26,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:40:26,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:26,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:40:26,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:26,700 INFO L87 Difference]: Start difference. First operand 4161 states and 16405 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:27,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:27,819 INFO L93 Difference]: Finished difference Result 5906 states and 22469 transitions. [2022-11-18 19:40:27,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:27,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 14 [2022-11-18 19:40:27,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:27,836 INFO L225 Difference]: With dead ends: 5906 [2022-11-18 19:40:27,836 INFO L226 Difference]: Without dead ends: 5906 [2022-11-18 19:40:27,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:40:27,836 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 81 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:27,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 12 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:40:27,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5906 states. [2022-11-18 19:40:27,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5906 to 4025. [2022-11-18 19:40:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4025 states, 4018 states have (on average 3.909905425584868) internal successors, (15710), 4024 states have internal predecessors, (15710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:27,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4025 states to 4025 states and 15710 transitions. [2022-11-18 19:40:27,926 INFO L78 Accepts]: Start accepts. Automaton has 4025 states and 15710 transitions. Word has length 14 [2022-11-18 19:40:27,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:27,927 INFO L495 AbstractCegarLoop]: Abstraction has 4025 states and 15710 transitions. [2022-11-18 19:40:27,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:27,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4025 states and 15710 transitions. [2022-11-18 19:40:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:27,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:27,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:27,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Ended with exit code 0 [2022-11-18 19:40:28,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:28,129 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:28,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:28,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1955718451, now seen corresponding path program 6 times [2022-11-18 19:40:28,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:28,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947497820] [2022-11-18 19:40:28,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:40:28,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:28,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:28,131 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:28,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-18 19:40:28,392 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-18 19:40:28,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:28,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:40:28,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:28,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:28,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:28,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947497820] [2022-11-18 19:40:28,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947497820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:28,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:28,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:40:28,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925278144] [2022-11-18 19:40:28,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:28,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:40:28,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:28,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:40:28,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:28,515 INFO L87 Difference]: Start difference. First operand 4025 states and 15710 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:29,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:29,655 INFO L93 Difference]: Finished difference Result 5012 states and 19185 transitions. [2022-11-18 19:40:29,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:40:29,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 14 [2022-11-18 19:40:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:29,670 INFO L225 Difference]: With dead ends: 5012 [2022-11-18 19:40:29,670 INFO L226 Difference]: Without dead ends: 5012 [2022-11-18 19:40:29,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:40:29,670 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 86 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:29,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 12 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:40:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2022-11-18 19:40:29,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 3631. [2022-11-18 19:40:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3624 states have (on average 3.869757174392936) internal successors, (14024), 3630 states have internal predecessors, (14024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 14024 transitions. [2022-11-18 19:40:29,746 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 14024 transitions. Word has length 14 [2022-11-18 19:40:29,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:29,746 INFO L495 AbstractCegarLoop]: Abstraction has 3631 states and 14024 transitions. [2022-11-18 19:40:29,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:29,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 14024 transitions. [2022-11-18 19:40:29,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:29,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:29,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:29,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Ended with exit code 0 [2022-11-18 19:40:29,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:29,948 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:29,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:29,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1955241051, now seen corresponding path program 5 times [2022-11-18 19:40:29,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:29,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106548797] [2022-11-18 19:40:29,949 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:40:29,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:29,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:29,950 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:29,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2022-11-18 19:40:30,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:40:30,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:30,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:40:30,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:30,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:30,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:30,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106548797] [2022-11-18 19:40:30,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106548797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:30,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:30,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:40:30,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633568308] [2022-11-18 19:40:30,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:30,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:40:30,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:30,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:40:30,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:40:30,498 INFO L87 Difference]: Start difference. First operand 3631 states and 14024 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:31,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:31,827 INFO L93 Difference]: Finished difference Result 5296 states and 19435 transitions. [2022-11-18 19:40:31,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:40:31,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 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 14 [2022-11-18 19:40:31,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:31,841 INFO L225 Difference]: With dead ends: 5296 [2022-11-18 19:40:31,841 INFO L226 Difference]: Without dead ends: 5281 [2022-11-18 19:40:31,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:40:31,841 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 169 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:31,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 4 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:40:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2022-11-18 19:40:31,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 3406. [2022-11-18 19:40:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3399 states have (on average 3.849661665195646) internal successors, (13085), 3405 states have internal predecessors, (13085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:31,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 13085 transitions. [2022-11-18 19:40:31,921 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 13085 transitions. Word has length 14 [2022-11-18 19:40:31,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:31,921 INFO L495 AbstractCegarLoop]: Abstraction has 3406 states and 13085 transitions. [2022-11-18 19:40:31,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:31,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 13085 transitions. [2022-11-18 19:40:31,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:31,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:31,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:31,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:32,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:32,123 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:32,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:32,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1955391711, now seen corresponding path program 6 times [2022-11-18 19:40:32,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:32,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945028816] [2022-11-18 19:40:32,124 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:40:32,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:32,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:32,125 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:32,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-18 19:40:32,394 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-18 19:40:32,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:32,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:40:32,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:32,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:32,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:32,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945028816] [2022-11-18 19:40:32,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945028816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:32,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:32,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:40:32,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160444819] [2022-11-18 19:40:32,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:32,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:40:32,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:32,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:40:32,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:40:32,589 INFO L87 Difference]: Start difference. First operand 3406 states and 13085 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:34,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:34,182 INFO L93 Difference]: Finished difference Result 4353 states and 15877 transitions. [2022-11-18 19:40:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:40:34,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 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 14 [2022-11-18 19:40:34,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:34,193 INFO L225 Difference]: With dead ends: 4353 [2022-11-18 19:40:34,194 INFO L226 Difference]: Without dead ends: 4353 [2022-11-18 19:40:34,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:40:34,194 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 172 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:34,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 3 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 19:40:34,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2022-11-18 19:40:34,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 3062. [2022-11-18 19:40:34,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3062 states, 3055 states have (on average 3.8520458265139115) internal successors, (11768), 3061 states have internal predecessors, (11768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 11768 transitions. [2022-11-18 19:40:34,261 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 11768 transitions. Word has length 14 [2022-11-18 19:40:34,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:34,261 INFO L495 AbstractCegarLoop]: Abstraction has 3062 states and 11768 transitions. [2022-11-18 19:40:34,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:34,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 11768 transitions. [2022-11-18 19:40:34,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:40:34,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:34,263 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:34,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Ended with exit code 0 [2022-11-18 19:40:34,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:34,464 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:34,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:34,464 INFO L85 PathProgramCache]: Analyzing trace with hash 593413448, now seen corresponding path program 1 times [2022-11-18 19:40:34,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:34,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350358445] [2022-11-18 19:40:34,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:34,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:34,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:34,466 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:34,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-18 19:40:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:34,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:40:34,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:34,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:35,059 INFO L321 Elim1Store]: treesize reduction 120, result has 27.7 percent of original size [2022-11-18 19:40:35,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 56 [2022-11-18 19:40:35,088 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 8182 treesize of output 8054 [2022-11-18 19:40:35,360 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 19:40:35,360 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:40:36,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:36,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:37,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:37,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350358445] [2022-11-18 19:40:37,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350358445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:40:37,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:40:37,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-11-18 19:40:37,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834150372] [2022-11-18 19:40:37,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:37,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:40:37,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:37,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:40:37,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:40:37,363 INFO L87 Difference]: Start difference. First operand 3062 states and 11768 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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) [2022-11-18 19:40:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:39,422 INFO L93 Difference]: Finished difference Result 7282 states and 28789 transitions. [2022-11-18 19:40:39,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:40:39,422 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 [2022-11-18 19:40:39,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:39,443 INFO L225 Difference]: With dead ends: 7282 [2022-11-18 19:40:39,443 INFO L226 Difference]: Without dead ends: 7282 [2022-11-18 19:40:39,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:40:39,443 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 402 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 502 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:39,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 141 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 273 Invalid, 0 Unknown, 502 Unchecked, 1.2s Time] [2022-11-18 19:40:39,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2022-11-18 19:40:39,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 3062. [2022-11-18 19:40:39,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3062 states, 3055 states have (on average 3.8520458265139115) internal successors, (11768), 3061 states have internal predecessors, (11768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:39,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 11768 transitions. [2022-11-18 19:40:39,527 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 11768 transitions. Word has length 14 [2022-11-18 19:40:39,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:39,527 INFO L495 AbstractCegarLoop]: Abstraction has 3062 states and 11768 transitions. [2022-11-18 19:40:39,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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) [2022-11-18 19:40:39,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 11768 transitions. [2022-11-18 19:40:39,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:40:39,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:39,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:39,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:39,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:39,730 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:39,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:39,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1102476329, now seen corresponding path program 1 times [2022-11-18 19:40:39,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:39,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576085655] [2022-11-18 19:40:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:39,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:39,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:39,731 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:39,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-18 19:40:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:40,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:40:40,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:40,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:40,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:40,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:40,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:40,301 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:40:40,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:40:40,311 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 22 treesize of output 20 [2022-11-18 19:40:40,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:40,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:40:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:40:40,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:40,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:40,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576085655] [2022-11-18 19:40:40,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576085655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:40,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:40,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:40,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620432544] [2022-11-18 19:40:40,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:40,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:40,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:40,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:40,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:40,581 INFO L87 Difference]: Start difference. First operand 3062 states and 11768 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:40,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:40,775 INFO L93 Difference]: Finished difference Result 3052 states and 11725 transitions. [2022-11-18 19:40:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:40,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 19:40:40,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:40,783 INFO L225 Difference]: With dead ends: 3052 [2022-11-18 19:40:40,783 INFO L226 Difference]: Without dead ends: 3052 [2022-11-18 19:40:40,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:40,784 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:40,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-18 19:40:40,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2022-11-18 19:40:40,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 3038. [2022-11-18 19:40:40,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 3031 states have (on average 3.8545034642032334) internal successors, (11683), 3037 states have internal predecessors, (11683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 11683 transitions. [2022-11-18 19:40:40,834 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 11683 transitions. Word has length 15 [2022-11-18 19:40:40,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:40,834 INFO L495 AbstractCegarLoop]: Abstraction has 3038 states and 11683 transitions. [2022-11-18 19:40:40,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:40,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 11683 transitions. [2022-11-18 19:40:40,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:40:40,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:40,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:40,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (88)] Ended with exit code 0 [2022-11-18 19:40:41,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:41,037 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:41,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:41,037 INFO L85 PathProgramCache]: Analyzing trace with hash 535820478, now seen corresponding path program 1 times [2022-11-18 19:40:41,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:41,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784456239] [2022-11-18 19:40:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:41,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:41,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:41,038 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:41,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2022-11-18 19:40:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:41,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:40:41,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:41,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:42,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:42,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784456239] [2022-11-18 19:40:42,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784456239] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:40:42,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:40:42,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-18 19:40:42,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46402394] [2022-11-18 19:40:42,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:42,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:40:42,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:42,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:40:42,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:40:42,093 INFO L87 Difference]: Start difference. First operand 3038 states and 11683 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:44,863 INFO L93 Difference]: Finished difference Result 7329 states and 28427 transitions. [2022-11-18 19:40:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:40:44,864 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 19:40:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:44,886 INFO L225 Difference]: With dead ends: 7329 [2022-11-18 19:40:44,887 INFO L226 Difference]: Without dead ends: 7329 [2022-11-18 19:40:44,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:40:44,887 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 227 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:44,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 100 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 19:40:44,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7329 states. [2022-11-18 19:40:44,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7329 to 3344. [2022-11-18 19:40:44,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 3337 states have (on average 3.8735391069823195) internal successors, (12926), 3343 states have internal predecessors, (12926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 12926 transitions. [2022-11-18 19:40:44,990 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 12926 transitions. Word has length 15 [2022-11-18 19:40:44,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:44,990 INFO L495 AbstractCegarLoop]: Abstraction has 3344 states and 12926 transitions. [2022-11-18 19:40:44,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:44,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 12926 transitions. [2022-11-18 19:40:44,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:40:44,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:44,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:45,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:45,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:45,192 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:45,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:45,193 INFO L85 PathProgramCache]: Analyzing trace with hash -344232203, now seen corresponding path program 1 times [2022-11-18 19:40:45,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:45,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730521992] [2022-11-18 19:40:45,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:45,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:45,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:45,194 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:45,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-18 19:40:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:45,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:40:45,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:45,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:45,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:45,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:45,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:45,719 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:40:45,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:40:45,730 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 22 treesize of output 20 [2022-11-18 19:40:45,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:45,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:40:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:46,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:46,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:46,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730521992] [2022-11-18 19:40:46,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730521992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:46,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:46,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:46,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499512593] [2022-11-18 19:40:46,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:46,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:46,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:46,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:46,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:46,002 INFO L87 Difference]: Start difference. First operand 3344 states and 12926 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:46,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:46,232 INFO L93 Difference]: Finished difference Result 3344 states and 12925 transitions. [2022-11-18 19:40:46,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:46,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 19:40:46,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:46,241 INFO L225 Difference]: With dead ends: 3344 [2022-11-18 19:40:46,241 INFO L226 Difference]: Without dead ends: 3344 [2022-11-18 19:40:46,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:46,241 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:46,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-18 19:40:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2022-11-18 19:40:46,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 3344. [2022-11-18 19:40:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 3337 states have (on average 3.8732394366197185) internal successors, (12925), 3343 states have internal predecessors, (12925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 12925 transitions. [2022-11-18 19:40:46,303 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 12925 transitions. Word has length 15 [2022-11-18 19:40:46,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:46,303 INFO L495 AbstractCegarLoop]: Abstraction has 3344 states and 12925 transitions. [2022-11-18 19:40:46,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:46,303 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 12925 transitions. [2022-11-18 19:40:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:40:46,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:46,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:46,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:46,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:46,506 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:46,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:46,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1654422170, now seen corresponding path program 1 times [2022-11-18 19:40:46,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:46,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92723027] [2022-11-18 19:40:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:46,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:46,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:46,508 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:46,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2022-11-18 19:40:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:46,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:40:46,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:46,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:46,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:46,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:46,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92723027] [2022-11-18 19:40:46,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92723027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:46,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:46,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:46,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674456207] [2022-11-18 19:40:46,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:46,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:40:46,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:46,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:40:46,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:40:46,821 INFO L87 Difference]: Start difference. First operand 3344 states and 12925 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:47,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:47,028 INFO L93 Difference]: Finished difference Result 3122 states and 12087 transitions. [2022-11-18 19:40:47,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:40:47,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 19:40:47,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:47,037 INFO L225 Difference]: With dead ends: 3122 [2022-11-18 19:40:47,037 INFO L226 Difference]: Without dead ends: 2862 [2022-11-18 19:40:47,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:40:47,037 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:47,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 6 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:40:47,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2022-11-18 19:40:47,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2806. [2022-11-18 19:40:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2801 states have (on average 3.8818279186005) internal successors, (10873), 2805 states have internal predecessors, (10873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 10873 transitions. [2022-11-18 19:40:47,090 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 10873 transitions. Word has length 15 [2022-11-18 19:40:47,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:47,090 INFO L495 AbstractCegarLoop]: Abstraction has 2806 states and 10873 transitions. [2022-11-18 19:40:47,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:47,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 10873 transitions. [2022-11-18 19:40:47,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:40:47,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:47,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:47,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:47,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:47,295 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:47,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash -182971755, now seen corresponding path program 1 times [2022-11-18 19:40:47,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:47,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931863777] [2022-11-18 19:40:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:47,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:47,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:47,296 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:47,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2022-11-18 19:40:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:47,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:40:47,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:47,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:47,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:47,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:47,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:47,943 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:40:47,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:40:47,955 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 22 treesize of output 20 [2022-11-18 19:40:48,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:48,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:40:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:40:48,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:48,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:48,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931863777] [2022-11-18 19:40:48,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931863777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:48,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:48,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:48,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009026395] [2022-11-18 19:40:48,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:48,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:48,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:48,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:48,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:48,231 INFO L87 Difference]: Start difference. First operand 2806 states and 10873 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:48,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:48,412 INFO L93 Difference]: Finished difference Result 2798 states and 10851 transitions. [2022-11-18 19:40:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:48,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:40:48,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:48,420 INFO L225 Difference]: With dead ends: 2798 [2022-11-18 19:40:48,420 INFO L226 Difference]: Without dead ends: 2798 [2022-11-18 19:40:48,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:48,420 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:48,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2022-11-18 19:40:48,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-11-18 19:40:48,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2792. [2022-11-18 19:40:48,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2792 states, 2787 states have (on average 3.8880516684607103) internal successors, (10836), 2791 states have internal predecessors, (10836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:48,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 10836 transitions. [2022-11-18 19:40:48,473 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 10836 transitions. Word has length 16 [2022-11-18 19:40:48,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:48,473 INFO L495 AbstractCegarLoop]: Abstraction has 2792 states and 10836 transitions. [2022-11-18 19:40:48,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:48,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 10836 transitions. [2022-11-18 19:40:48,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:40:48,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:48,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:48,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:48,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:48,688 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:48,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:48,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1377344059, now seen corresponding path program 1 times [2022-11-18 19:40:48,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:48,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302408029] [2022-11-18 19:40:48,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:48,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:48,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:48,690 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:48,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2022-11-18 19:40:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:49,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:40:49,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:49,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,373 INFO L321 Elim1Store]: treesize reduction 120, result has 27.7 percent of original size [2022-11-18 19:40:49,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 56 [2022-11-18 19:40:49,403 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 176 treesize of output 174 [2022-11-18 19:40:49,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:49,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:40:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:40:49,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:49,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:49,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302408029] [2022-11-18 19:40:49,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302408029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:49,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:49,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:49,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44853215] [2022-11-18 19:40:49,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:49,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:49,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:49,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:49,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:49,895 INFO L87 Difference]: Start difference. First operand 2792 states and 10836 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:50,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:50,109 INFO L93 Difference]: Finished difference Result 2790 states and 10831 transitions. [2022-11-18 19:40:50,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:50,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:40:50,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:50,116 INFO L225 Difference]: With dead ends: 2790 [2022-11-18 19:40:50,116 INFO L226 Difference]: Without dead ends: 2790 [2022-11-18 19:40:50,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:50,116 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:50,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 33 Unchecked, 0.2s Time] [2022-11-18 19:40:50,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2022-11-18 19:40:50,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2790. [2022-11-18 19:40:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2785 states have (on average 3.889048473967684) internal successors, (10831), 2789 states have internal predecessors, (10831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:50,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 10831 transitions. [2022-11-18 19:40:50,167 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 10831 transitions. Word has length 17 [2022-11-18 19:40:50,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:50,168 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 10831 transitions. [2022-11-18 19:40:50,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:50,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 10831 transitions. [2022-11-18 19:40:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:40:50,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:50,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:50,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:50,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:50,383 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash 257628465, now seen corresponding path program 1 times [2022-11-18 19:40:50,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:50,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43773246] [2022-11-18 19:40:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:50,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:50,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:50,384 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:50,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2022-11-18 19:40:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:50,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:40:50,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:50,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:50,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:50,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:50,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:51,157 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:40:51,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:40:51,168 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 22 treesize of output 20 [2022-11-18 19:40:51,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:51,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:40:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 19:40:51,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:51,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:51,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43773246] [2022-11-18 19:40:51,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43773246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:51,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:51,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:51,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800114107] [2022-11-18 19:40:51,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:51,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:51,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:51,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:51,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:51,550 INFO L87 Difference]: Start difference. First operand 2790 states and 10831 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:51,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:51,734 INFO L93 Difference]: Finished difference Result 2788 states and 10828 transitions. [2022-11-18 19:40:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:51,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:40:51,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:51,743 INFO L225 Difference]: With dead ends: 2788 [2022-11-18 19:40:51,743 INFO L226 Difference]: Without dead ends: 2738 [2022-11-18 19:40:51,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:51,743 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:51,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2022-11-18 19:40:51,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2022-11-18 19:40:51,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 2717. [2022-11-18 19:40:51,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2713 states have (on average 3.91927755252488) internal successors, (10633), 2716 states have internal predecessors, (10633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:51,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 10633 transitions. [2022-11-18 19:40:51,799 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 10633 transitions. Word has length 18 [2022-11-18 19:40:51,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:51,799 INFO L495 AbstractCegarLoop]: Abstraction has 2717 states and 10633 transitions. [2022-11-18 19:40:51,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:51,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 10633 transitions. [2022-11-18 19:40:51,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:40:51,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:51,803 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:51,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Ended with exit code 0 [2022-11-18 19:40:52,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:52,003 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:52,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1171266488, now seen corresponding path program 2 times [2022-11-18 19:40:52,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:52,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117140406] [2022-11-18 19:40:52,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:40:52,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:52,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:52,005 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:52,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2022-11-18 19:40:52,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:40:52,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:40:52,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:40:52,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:52,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:52,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:52,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:52,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:52,571 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:40:52,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:40:52,584 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 22 treesize of output 20 [2022-11-18 19:40:52,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:52,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:40:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 19:40:52,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:40:52,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:52,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117140406] [2022-11-18 19:40:52,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117140406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:52,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:52,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:40:52,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634737300] [2022-11-18 19:40:52,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:52,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:40:52,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:52,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:40:52,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:40:52,918 INFO L87 Difference]: Start difference. First operand 2717 states and 10633 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:40:53,113 INFO L93 Difference]: Finished difference Result 2733 states and 10673 transitions. [2022-11-18 19:40:53,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:40:53,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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 18 [2022-11-18 19:40:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:40:53,125 INFO L225 Difference]: With dead ends: 2733 [2022-11-18 19:40:53,125 INFO L226 Difference]: Without dead ends: 2733 [2022-11-18 19:40:53,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:40:53,126 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:40:53,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 33 Unchecked, 0.2s Time] [2022-11-18 19:40:53,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2022-11-18 19:40:53,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2725. [2022-11-18 19:40:53,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 2721 states have (on average 3.9151047409040793) internal successors, (10653), 2724 states have internal predecessors, (10653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 10653 transitions. [2022-11-18 19:40:53,172 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 10653 transitions. Word has length 18 [2022-11-18 19:40:53,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:40:53,172 INFO L495 AbstractCegarLoop]: Abstraction has 2725 states and 10653 transitions. [2022-11-18 19:40:53,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:53,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 10653 transitions. [2022-11-18 19:40:53,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:40:53,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:40:53,175 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:53,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2022-11-18 19:40:53,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:53,376 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:40:53,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:53,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1171440336, now seen corresponding path program 1 times [2022-11-18 19:40:53,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:40:53,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197614299] [2022-11-18 19:40:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:53,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:40:53,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:40:53,377 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:40:53,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2022-11-18 19:40:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:53,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 19:40:53,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:40:53,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:53,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:53,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:53,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:40:54,049 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:40:54,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:40:54,063 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 22 treesize of output 20 [2022-11-18 19:40:54,130 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 19:40:54,130 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:40:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:55,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:40:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:40:58,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:40:58,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197614299] [2022-11-18 19:40:58,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197614299] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:40:58,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:40:58,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2022-11-18 19:40:58,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171651673] [2022-11-18 19:40:58,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:40:58,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:40:58,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:40:58,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:40:58,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:40:58,056 INFO L87 Difference]: Start difference. First operand 2725 states and 10653 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:04,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:04,032 INFO L93 Difference]: Finished difference Result 7116 states and 28461 transitions. [2022-11-18 19:41:04,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:41:04,032 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:41:04,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:04,053 INFO L225 Difference]: With dead ends: 7116 [2022-11-18 19:41:04,053 INFO L226 Difference]: Without dead ends: 7116 [2022-11-18 19:41:04,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=396, Invalid=864, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:41:04,054 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 452 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 634 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:04,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 244 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 603 Invalid, 0 Unknown, 634 Unchecked, 2.2s Time] [2022-11-18 19:41:04,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7116 states. [2022-11-18 19:41:04,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7116 to 2725. [2022-11-18 19:41:04,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 2721 states have (on average 3.9151047409040793) internal successors, (10653), 2724 states have internal predecessors, (10653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 10653 transitions. [2022-11-18 19:41:04,131 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 10653 transitions. Word has length 18 [2022-11-18 19:41:04,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:04,131 INFO L495 AbstractCegarLoop]: Abstraction has 2725 states and 10653 transitions. [2022-11-18 19:41:04,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:04,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 10653 transitions. [2022-11-18 19:41:04,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:41:04,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:04,134 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1] [2022-11-18 19:41:04,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Ended with exit code 0 [2022-11-18 19:41:04,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:04,335 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:41:04,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:04,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2005959192, now seen corresponding path program 2 times [2022-11-18 19:41:04,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:41:04,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779987185] [2022-11-18 19:41:04,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:41:04,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:41:04,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:41:04,336 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:41:04,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2022-11-18 19:41:04,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:41:04,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:41:04,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:41:04,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:41:04,742 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 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 19:41:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:05,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:41:12,166 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:12,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:41:12,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779987185] [2022-11-18 19:41:12,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779987185] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:41:12,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:41:12,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2022-11-18 19:41:12,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132343083] [2022-11-18 19:41:12,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:41:12,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:41:12,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:41:12,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:41:12,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 19:41:12,173 INFO L87 Difference]: Start difference. First operand 2725 states and 10653 transitions. Second operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:29,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:31,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:33,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:35,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:37,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:39,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:41,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:43,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:45,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:47,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:49,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:51,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:53,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:55,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:57,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:41:59,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:43:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:02,591 INFO L93 Difference]: Finished difference Result 69294 states and 284689 transitions. [2022-11-18 19:43:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 19:43:02,593 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 19:43:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:02,873 INFO L225 Difference]: With dead ends: 69294 [2022-11-18 19:43:02,873 INFO L226 Difference]: Without dead ends: 69294 [2022-11-18 19:43:02,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 47.1s TimeCoverageRelationStatistics Valid=934, Invalid=1718, Unknown=0, NotChecked=0, Total=2652 [2022-11-18 19:43:02,874 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 9902 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 9141 mSolverCounterSat, 484 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9902 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 9641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 9141 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:02,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9902 Valid, 1796 Invalid, 9641 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [484 Valid, 9141 Invalid, 16 Unknown, 0 Unchecked, 68.9s Time] [2022-11-18 19:43:02,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69294 states. [2022-11-18 19:43:03,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69294 to 2761. [2022-11-18 19:43:03,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2761 states, 2757 states have (on average 3.8900979325353644) internal successors, (10725), 2760 states have internal predecessors, (10725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:03,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2761 states to 2761 states and 10725 transitions. [2022-11-18 19:43:03,620 INFO L78 Accepts]: Start accepts. Automaton has 2761 states and 10725 transitions. Word has length 19 [2022-11-18 19:43:03,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:03,620 INFO L495 AbstractCegarLoop]: Abstraction has 2761 states and 10725 transitions. [2022-11-18 19:43:03,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:03,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2761 states and 10725 transitions. [2022-11-18 19:43:03,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 19:43:03,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:03,625 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1] [2022-11-18 19:43:03,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:03,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:43:03,835 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:43:03,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:03,835 INFO L85 PathProgramCache]: Analyzing trace with hash 922743848, now seen corresponding path program 4 times [2022-11-18 19:43:03,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:43:03,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667537374] [2022-11-18 19:43:03,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:43:03,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:43:03,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:43:03,837 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:43:03,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2022-11-18 19:43:04,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:43:04,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:43:04,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 19:43:04,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:04,497 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-18 19:43:04,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-18 19:43:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:06,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:43:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:20,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:43:20,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667537374] [2022-11-18 19:43:20,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667537374] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:43:20,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:43:20,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2022-11-18 19:43:20,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340538200] [2022-11-18 19:43:20,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:43:20,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 19:43:20,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:43:20,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 19:43:20,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 19:43:20,814 INFO L87 Difference]: Start difference. First operand 2761 states and 10725 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) [2022-11-18 19:44:09,216 WARN L233 SmtUtils]: Spent 27.86s 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) [2022-11-18 19:44:32,285 WARN L233 SmtUtils]: Spent 19.94s 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) [2022-11-18 19:44:57,397 WARN L233 SmtUtils]: Spent 21.72s 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) [2022-11-18 19:45:00,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:02,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:04,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:06,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:08,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:10,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:12,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:14,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:16,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:18,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:20,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:22,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:24,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:26,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:28,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:30,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:32,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:34,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:36,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:38,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:40,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:45:42,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:46:05,769 WARN L233 SmtUtils]: Spent 21.14s 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) [2022-11-18 19:46:23,741 WARN L233 SmtUtils]: Spent 14.23s 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) [2022-11-18 19:46:37,465 WARN L233 SmtUtils]: Spent 10.52s 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) [2022-11-18 19:46:55,324 WARN L233 SmtUtils]: Spent 14.50s 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) [2022-11-18 19:47:07,370 WARN L233 SmtUtils]: Spent 8.75s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:47:16,405 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:47:24,700 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:48:06,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:06,012 INFO L93 Difference]: Finished difference Result 49995 states and 205384 transitions. [2022-11-18 19:48:06,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 19:48:06,014 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 [2022-11-18 19:48:06,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:06,234 INFO L225 Difference]: With dead ends: 49995 [2022-11-18 19:48:06,234 INFO L226 Difference]: Without dead ends: 49995 [2022-11-18 19:48:06,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 215.0s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2022-11-18 19:48:06,235 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 11229 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 16651 mSolverCounterSat, 798 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11229 SdHoareTripleChecker+Valid, 3260 SdHoareTripleChecker+Invalid, 17471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 16651 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:06,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11229 Valid, 3260 Invalid, 17471 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [798 Valid, 16651 Invalid, 22 Unknown, 0 Unchecked, 83.5s Time] [2022-11-18 19:48:06,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49995 states. [2022-11-18 19:48:06,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49995 to 2785. [2022-11-18 19:48:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2781 states have (on average 3.8737864077669903) internal successors, (10773), 2784 states have internal predecessors, (10773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 10773 transitions. [2022-11-18 19:48:06,735 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 10773 transitions. Word has length 24 [2022-11-18 19:48:06,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:06,735 INFO L495 AbstractCegarLoop]: Abstraction has 2785 states and 10773 transitions. [2022-11-18 19:48:06,735 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) [2022-11-18 19:48:06,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 10773 transitions. [2022-11-18 19:48:06,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 19:48:06,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:06,741 INFO L195 NwaCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:06,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (98)] Ended with exit code 0 [2022-11-18 19:48:06,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:06,941 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:48:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:06,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1265042640, now seen corresponding path program 2 times [2022-11-18 19:48:06,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:48:06,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350446584] [2022-11-18 19:48:06,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:48:06,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:06,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:48:06,944 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:48:06,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2022-11-18 19:48:07,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:48:07,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:48:07,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:48:07,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:07,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:48:07,696 INFO L321 Elim1Store]: treesize reduction 120, result has 27.7 percent of original size [2022-11-18 19:48:07,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 56 [2022-11-18 19:48:07,731 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 16374 treesize of output 16118 [2022-11-18 19:48:08,220 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 19:48:08,220 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:48:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-18 19:48:09,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:48:09,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:48:09,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350446584] [2022-11-18 19:48:09,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350446584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:09,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:09,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:48:09,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123187351] [2022-11-18 19:48:09,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:09,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:48:09,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:48:09,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:48:09,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:48:09,058 INFO L87 Difference]: Start difference. First operand 2785 states and 10773 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:09,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:09,412 INFO L93 Difference]: Finished difference Result 3575 states and 13725 transitions. [2022-11-18 19:48:09,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:48:09,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 26 [2022-11-18 19:48:09,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:09,423 INFO L225 Difference]: With dead ends: 3575 [2022-11-18 19:48:09,423 INFO L226 Difference]: Without dead ends: 3575 [2022-11-18 19:48:09,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:48:09,424 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 69 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:09,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 33 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 95 Unchecked, 0.3s Time] [2022-11-18 19:48:09,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2022-11-18 19:48:09,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 2811. [2022-11-18 19:48:09,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2807 states have (on average 3.8728179551122195) internal successors, (10871), 2810 states have internal predecessors, (10871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 10871 transitions. [2022-11-18 19:48:09,490 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 10871 transitions. Word has length 26 [2022-11-18 19:48:09,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:09,490 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 10871 transitions. [2022-11-18 19:48:09,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:09,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 10871 transitions. [2022-11-18 19:48:09,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 19:48:09,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:09,496 INFO L195 NwaCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:09,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (99)] Ended with exit code 0 [2022-11-18 19:48:09,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:09,696 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:48:09,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1264982190, now seen corresponding path program 3 times [2022-11-18 19:48:09,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:48:09,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533198755] [2022-11-18 19:48:09,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:48:09,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:09,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:48:09,698 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:48:09,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2022-11-18 19:48:10,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 19:48:10,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:48:10,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 19:48:10,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:10,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:48:10,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:48:10,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:48:10,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:48:10,339 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:48:10,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:48:10,350 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 22 treesize of output 20 [2022-11-18 19:48:10,411 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 19:48:10,412 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:48:11,171 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-18 19:48:11,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:48:11,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:48:11,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533198755] [2022-11-18 19:48:11,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533198755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:11,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:11,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:48:11,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167006442] [2022-11-18 19:48:11,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:11,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:48:11,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:48:11,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:48:11,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:48:11,176 INFO L87 Difference]: Start difference. First operand 2811 states and 10871 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:11,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:11,686 INFO L93 Difference]: Finished difference Result 3593 states and 13791 transitions. [2022-11-18 19:48:11,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:48:11,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 26 [2022-11-18 19:48:11,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:11,697 INFO L225 Difference]: With dead ends: 3593 [2022-11-18 19:48:11,697 INFO L226 Difference]: Without dead ends: 3593 [2022-11-18 19:48:11,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:48:11,697 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 45 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:11,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 38 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 98 Unchecked, 0.4s Time] [2022-11-18 19:48:11,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2022-11-18 19:48:11,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 2818. [2022-11-18 19:48:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2814 states have (on average 3.8702914001421465) internal successors, (10891), 2817 states have internal predecessors, (10891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 10891 transitions. [2022-11-18 19:48:11,762 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 10891 transitions. Word has length 26 [2022-11-18 19:48:11,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:11,762 INFO L495 AbstractCegarLoop]: Abstraction has 2818 states and 10891 transitions. [2022-11-18 19:48:11,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 10891 transitions. [2022-11-18 19:48:11,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 19:48:11,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:11,769 INFO L195 NwaCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:11,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:11,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:11,970 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:48:11,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:11,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1264048222, now seen corresponding path program 1 times [2022-11-18 19:48:11,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:48:11,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396187559] [2022-11-18 19:48:11,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:11,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:11,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:48:11,972 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:48:11,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2022-11-18 19:48:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:12,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 19:48:12,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:12,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:48:12,907 INFO L321 Elim1Store]: treesize reduction 120, result has 27.7 percent of original size [2022-11-18 19:48:12,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 56 [2022-11-18 19:48:12,940 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 4375 treesize of output 4247 [2022-11-18 19:48:13,182 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 19:48:13,182 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:48:15,984 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:15,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:48:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:23,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:48:23,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396187559] [2022-11-18 19:48:23,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396187559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:48:23,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:48:23,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2022-11-18 19:48:23,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708724341] [2022-11-18 19:48:23,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:48:23,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 19:48:23,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:48:23,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 19:48:23,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1056, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:48:23,793 INFO L87 Difference]: Start difference. First operand 2818 states and 10891 transitions. Second operand has 38 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:48,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:48,807 INFO L93 Difference]: Finished difference Result 5353 states and 20986 transitions. [2022-11-18 19:48:48,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 19:48:48,808 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 states have internal predecessors, (52), 0 states have call successors, (0), 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 26 [2022-11-18 19:48:48,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:48,824 INFO L225 Difference]: With dead ends: 5353 [2022-11-18 19:48:48,825 INFO L226 Difference]: Without dead ends: 5353 [2022-11-18 19:48:48,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=1100, Invalid=2682, Unknown=0, NotChecked=0, Total=3782 [2022-11-18 19:48:48,826 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 814 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 572 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:48,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 316 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 677 Invalid, 0 Unknown, 572 Unchecked, 4.0s Time] [2022-11-18 19:48:48,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2022-11-18 19:48:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 2864. [2022-11-18 19:48:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2860 states have (on average 3.8674825174825176) internal successors, (11061), 2863 states have internal predecessors, (11061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:48,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 11061 transitions. [2022-11-18 19:48:48,908 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 11061 transitions. Word has length 26 [2022-11-18 19:48:48,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:48,908 INFO L495 AbstractCegarLoop]: Abstraction has 2864 states and 11061 transitions. [2022-11-18 19:48:48,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:48,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 11061 transitions. [2022-11-18 19:48:48,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 19:48:48,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:48,914 INFO L195 NwaCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:48,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (101)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:49,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:49,114 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:48:49,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:49,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1264069395, now seen corresponding path program 1 times [2022-11-18 19:48:49,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:48:49,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543791943] [2022-11-18 19:48:49,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:49,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:49,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:48:49,117 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:48:49,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2022-11-18 19:48:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:49,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 19:48:49,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:49,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:48:50,116 INFO L321 Elim1Store]: treesize reduction 120, result has 27.7 percent of original size [2022-11-18 19:48:50,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 56 [2022-11-18 19:48:50,153 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 8182 treesize of output 8054 [2022-11-18 19:48:50,403 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 19:48:50,403 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:48:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:53,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:00,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:49:00,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543791943] [2022-11-18 19:49:00,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543791943] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:00,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:49:00,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2022-11-18 19:49:00,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558850402] [2022-11-18 19:49:00,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:00,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 19:49:00,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:49:00,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 19:49:00,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1056, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:49:00,975 INFO L87 Difference]: Start difference. First operand 2864 states and 11061 transitions. Second operand has 38 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:26,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:49:26,545 INFO L93 Difference]: Finished difference Result 11315 states and 45731 transitions. [2022-11-18 19:49:26,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 19:49:26,546 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 states have internal predecessors, (52), 0 states have call successors, (0), 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 26 [2022-11-18 19:49:26,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:49:26,586 INFO L225 Difference]: With dead ends: 11315 [2022-11-18 19:49:26,587 INFO L226 Difference]: Without dead ends: 11315 [2022-11-18 19:49:26,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 14 SyntacticMatches, 9 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=1069, Invalid=2591, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 19:49:26,588 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 911 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 438 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:49:26,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 624 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1413 Invalid, 0 Unknown, 438 Unchecked, 5.7s Time] [2022-11-18 19:49:26,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11315 states. [2022-11-18 19:49:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11315 to 2874. [2022-11-18 19:49:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2870 states have (on average 3.861672473867596) internal successors, (11083), 2873 states have internal predecessors, (11083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:26,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 11083 transitions. [2022-11-18 19:49:26,723 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 11083 transitions. Word has length 26 [2022-11-18 19:49:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:49:26,723 INFO L495 AbstractCegarLoop]: Abstraction has 2874 states and 11083 transitions. [2022-11-18 19:49:26,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:26,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 11083 transitions. [2022-11-18 19:49:26,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 19:49:26,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:49:26,728 INFO L195 NwaCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:26,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (102)] Ended with exit code 0 [2022-11-18 19:49:26,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:49:26,929 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2022-11-18 19:49:26,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:26,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1491845460, now seen corresponding path program 4 times [2022-11-18 19:49:26,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:49:26,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429533688] [2022-11-18 19:49:26,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:49:26,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:49:26,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:49:26,931 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:49:26,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d4821a-79e8-4388-80cd-b4a092dfdc38/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2022-11-18 19:49:27,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:49:27,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:49:27,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-18 19:49:27,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:27,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:27,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:27,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:27,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:49:27,787 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:49:27,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-11-18 19:49:27,799 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 22 treesize of output 20 [2022-11-18 19:49:27,859 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-18 19:49:27,859 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:49:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:30,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:38,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:49:38,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429533688] [2022-11-18 19:49:38,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429533688] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:38,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:49:38,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2022-11-18 19:49:38,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403228032] [2022-11-18 19:49:38,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:38,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 19:49:38,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:49:38,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 19:49:38,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1056, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 19:49:38,406 INFO L87 Difference]: Start difference. First operand 2874 states and 11083 transitions. Second operand has 38 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)