./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:21:25,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:21:25,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:21:25,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:21:25,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:21:25,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:21:25,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:21:25,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:21:25,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:21:25,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:21:25,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:21:25,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:21:25,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:21:25,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:21:25,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:21:25,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:21:25,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:21:25,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:21:25,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:21:25,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:21:25,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:21:25,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:21:25,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:21:25,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:21:25,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:21:25,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:21:25,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:21:25,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:21:25,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:21:25,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:21:25,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:21:25,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:21:25,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:21:25,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:21:25,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:21:25,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:21:25,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:21:25,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:21:25,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:21:25,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:21:25,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:21:25,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 17:21:25,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:21:25,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:21:25,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:21:25,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:21:25,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:21:25,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:21:25,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:21:25,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:21:25,186 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:21:25,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:21:25,187 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:21:25,188 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:21:25,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:21:25,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:21:25,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:21:25,188 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 17:21:25,189 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 17:21:25,189 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 17:21:25,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:21:25,189 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 17:21:25,189 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:21:25,190 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:21:25,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:21:25,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:21:25,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:21:25,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:21:25,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:21:25,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:21:25,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:21:25,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:21:25,192 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_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 [2022-11-21 17:21:25,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:21:25,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:21:25,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:21:25,514 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:21:25,515 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:21:25,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2022-11-21 17:21:28,553 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:21:28,757 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:21:28,758 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2022-11-21 17:21:28,765 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/data/0d562f57f/28991c2268824ee1a9f887956f66241f/FLAG6ce1198f4 [2022-11-21 17:21:28,781 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/data/0d562f57f/28991c2268824ee1a9f887956f66241f [2022-11-21 17:21:28,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:21:28,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:21:28,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:21:28,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:21:28,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:21:28,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:21:28" (1/1) ... [2022-11-21 17:21:28,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df37069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:28, skipping insertion in model container [2022-11-21 17:21:28,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:21:28" (1/1) ... [2022-11-21 17:21:28,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:21:28,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:21:29,006 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c[2434,2447] [2022-11-21 17:21:29,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:21:29,027 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-21 17:21:29,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11375631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:29, skipping insertion in model container [2022-11-21 17:21:29,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:21:29,028 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-21 17:21:29,030 INFO L158 Benchmark]: Toolchain (without parser) took 244.04ms. Allocated memory is still 172.0MB. Free memory was 128.4MB in the beginning and 118.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 17:21:29,030 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 66.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:21:29,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.49ms. Allocated memory is still 172.0MB. Free memory was 128.0MB in the beginning and 118.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 17:21:29,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory is still 66.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.49ms. Allocated memory is still 172.0MB. Free memory was 128.0MB in the beginning and 118.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 101]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:21:31,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:21:31,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:21:31,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:21:31,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:21:31,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:21:31,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:21:31,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:21:31,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:21:31,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:21:31,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:21:31,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:21:31,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:21:31,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:21:31,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:21:31,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:21:31,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:21:31,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:21:31,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:21:31,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:21:31,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:21:31,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:21:31,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:21:31,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:21:31,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:21:31,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:21:31,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:21:31,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:21:31,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:21:31,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:21:31,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:21:31,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:21:31,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:21:31,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:21:31,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:21:31,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:21:31,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:21:31,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:21:31,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:21:31,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:21:31,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:21:31,427 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-21 17:21:31,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:21:31,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:21:31,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:21:31,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:21:31,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:21:31,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:21:31,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:21:31,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:21:31,476 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:21:31,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:21:31,477 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:21:31,478 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:21:31,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:21:31,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:21:31,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:21:31,478 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 17:21:31,479 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 17:21:31,479 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 17:21:31,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:21:31,479 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 17:21:31,479 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 17:21:31,480 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 17:21:31,480 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:21:31,480 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:21:31,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:21:31,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:21:31,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:21:31,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:21:31,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:21:31,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:21:31,482 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 17:21:31,482 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 17:21:31,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 17:21:31,482 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_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 [2022-11-21 17:21:31,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:21:31,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:21:31,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:21:31,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:21:31,908 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:21:31,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2022-11-21 17:21:35,117 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:21:35,313 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:21:35,313 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2022-11-21 17:21:35,320 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/data/3187e7c78/ac7b56f77d9c4f1bbd431de828b011bb/FLAG9cc7f6e01 [2022-11-21 17:21:35,340 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/data/3187e7c78/ac7b56f77d9c4f1bbd431de828b011bb [2022-11-21 17:21:35,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:21:35,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:21:35,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:21:35,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:21:35,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:21:35,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:21:35" (1/1) ... [2022-11-21 17:21:35,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f3c814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:35, skipping insertion in model container [2022-11-21 17:21:35,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:21:35" (1/1) ... [2022-11-21 17:21:35,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:21:35,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:21:35,598 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c[2434,2447] [2022-11-21 17:21:35,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:21:35,639 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-21 17:21:35,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:21:35,674 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c[2434,2447] [2022-11-21 17:21:35,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:21:35,694 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:21:35,738 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c[2434,2447] [2022-11-21 17:21:35,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:21:35,762 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:21:35,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:35 WrapperNode [2022-11-21 17:21:35,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:21:35,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:21:35,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:21:35,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:21:35,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:35" (1/1) ... [2022-11-21 17:21:35,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:35" (1/1) ... [2022-11-21 17:21:35,828 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 102 [2022-11-21 17:21:35,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:21:35,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:21:35,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:21:35,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:21:35,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:35" (1/1) ... [2022-11-21 17:21:35,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:35" (1/1) ... [2022-11-21 17:21:35,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:35" (1/1) ... [2022-11-21 17:21:35,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:35" (1/1) ... [2022-11-21 17:21:35,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:35" (1/1) ... [2022-11-21 17:21:35,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:35" (1/1) ... [2022-11-21 17:21:35,888 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:35" (1/1) ... [2022-11-21 17:21:35,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:35" (1/1) ... [2022-11-21 17:21:35,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:21:35,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:21:35,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:21:35,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:21:35,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:35" (1/1) ... [2022-11-21 17:21:35,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:21:35,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:21:35,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:21:35,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:21:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:21:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 17:21:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:21:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-21 17:21:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 17:21:35,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 17:21:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 17:21:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 17:21:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 17:21:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 17:21:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:21:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:21:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:21:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:21:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-21 17:21:35,991 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:21:36,112 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:21:36,118 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:21:36,823 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:21:36,833 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:21:36,833 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 17:21:36,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:21:36 BoogieIcfgContainer [2022-11-21 17:21:36,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:21:36,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:21:36,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:21:36,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:21:36,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:21:35" (1/3) ... [2022-11-21 17:21:36,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa7b998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:21:36, skipping insertion in model container [2022-11-21 17:21:36,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:21:35" (2/3) ... [2022-11-21 17:21:36,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa7b998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:21:36, skipping insertion in model container [2022-11-21 17:21:36,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:21:36" (3/3) ... [2022-11-21 17:21:36,846 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2022-11-21 17:21:36,867 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:21:36,867 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-21 17:21:36,868 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:21:36,992 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 17:21:37,041 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 17:21:37,065 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 211 transitions, 446 flow [2022-11-21 17:21:37,074 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 211 transitions, 446 flow [2022-11-21 17:21:37,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 211 transitions, 446 flow [2022-11-21 17:21:37,234 INFO L130 PetriNetUnfolder]: 15/208 cut-off events. [2022-11-21 17:21:37,234 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 17:21:37,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 208 events. 15/208 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 328 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 148. Up to 2 conditions per place. [2022-11-21 17:21:37,247 INFO L119 LiptonReduction]: Number of co-enabled transitions 5658 [2022-11-21 17:22:14,533 INFO L134 LiptonReduction]: Checked pairs total: 8023 [2022-11-21 17:22:14,534 INFO L136 LiptonReduction]: Total number of compositions: 230 [2022-11-21 17:22:14,542 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 59 transitions, 142 flow [2022-11-21 17:22:14,689 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2342 states, 1842 states have (on average 4.796416938110749) internal successors, (8835), 2341 states have internal predecessors, (8835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:14,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:22:14,717 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;@680110b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:22:14,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2022-11-21 17:22:14,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 2342 states, 1842 states have (on average 4.796416938110749) internal successors, (8835), 2341 states have internal predecessors, (8835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 17:22:14,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:14,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 17:22:14,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:14,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:14,738 INFO L85 PathProgramCache]: Analyzing trace with hash 26030, now seen corresponding path program 1 times [2022-11-21 17:22:14,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:14,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660846850] [2022-11-21 17:22:14,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:14,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:14,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:14,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:14,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-21 17:22:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:14,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:22:14,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:15,043 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-21 17:22:15,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-21 17:22:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:15,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:15,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:15,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660846850] [2022-11-21 17:22:15,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660846850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:15,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:15,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:22:15,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829560193] [2022-11-21 17:22:15,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:15,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:22:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:15,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:22:15,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:15,140 INFO L87 Difference]: Start difference. First operand has 2342 states, 1842 states have (on average 4.796416938110749) internal successors, (8835), 2341 states have internal predecessors, (8835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:15,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:15,463 INFO L93 Difference]: Finished difference Result 1600 states and 6035 transitions. [2022-11-21 17:22:15,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:22:15,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-21 17:22:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:15,495 INFO L225 Difference]: With dead ends: 1600 [2022-11-21 17:22:15,495 INFO L226 Difference]: Without dead ends: 1600 [2022-11-21 17:22:15,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:15,500 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:15,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:22:15,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2022-11-21 17:22:15,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1600. [2022-11-21 17:22:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1325 states have (on average 4.554716981132075) internal successors, (6035), 1599 states have internal predecessors, (6035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 6035 transitions. [2022-11-21 17:22:15,652 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 6035 transitions. Word has length 2 [2022-11-21 17:22:15,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:15,655 INFO L495 AbstractCegarLoop]: Abstraction has 1600 states and 6035 transitions. [2022-11-21 17:22:15,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 6035 transitions. [2022-11-21 17:22:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 17:22:15,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:15,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 17:22:15,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:15,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:15,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:15,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:15,871 INFO L85 PathProgramCache]: Analyzing trace with hash 26031, now seen corresponding path program 1 times [2022-11-21 17:22:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:15,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029487314] [2022-11-21 17:22:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:15,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:15,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:15,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:15,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-21 17:22:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:15,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 17:22:15,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:16,123 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:22:16,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:22:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:16,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:16,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:16,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029487314] [2022-11-21 17:22:16,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029487314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:16,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:16,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:22:16,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671768606] [2022-11-21 17:22:16,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:16,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:22:16,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:16,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:22:16,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:16,201 INFO L87 Difference]: Start difference. First operand 1600 states and 6035 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:16,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:16,768 INFO L93 Difference]: Finished difference Result 3198 states and 12068 transitions. [2022-11-21 17:22:16,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:22:16,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-21 17:22:16,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:16,795 INFO L225 Difference]: With dead ends: 3198 [2022-11-21 17:22:16,795 INFO L226 Difference]: Without dead ends: 3198 [2022-11-21 17:22:16,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:16,796 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 47 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:16,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 17:22:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2022-11-21 17:22:16,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 1601. [2022-11-21 17:22:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1326 states have (on average 4.5542986425339365) internal successors, (6039), 1600 states have internal predecessors, (6039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 6039 transitions. [2022-11-21 17:22:16,917 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 6039 transitions. Word has length 2 [2022-11-21 17:22:16,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:16,917 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 6039 transitions. [2022-11-21 17:22:16,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:16,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 6039 transitions. [2022-11-21 17:22:16,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 17:22:16,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:16,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 17:22:16,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:17,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:17,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:17,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:17,132 INFO L85 PathProgramCache]: Analyzing trace with hash 26231, now seen corresponding path program 1 times [2022-11-21 17:22:17,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:17,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846954516] [2022-11-21 17:22:17,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:17,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:17,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:17,135 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:17,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-21 17:22:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:17,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 17:22:17,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:17,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:17,250 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:17,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846954516] [2022-11-21 17:22:17,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846954516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:17,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:17,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:22:17,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467841809] [2022-11-21 17:22:17,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:17,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:22:17,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:22:17,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:17,253 INFO L87 Difference]: Start difference. First operand 1601 states and 6039 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:17,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:17,575 INFO L93 Difference]: Finished difference Result 1601 states and 6036 transitions. [2022-11-21 17:22:17,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:22:17,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-21 17:22:17,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:17,588 INFO L225 Difference]: With dead ends: 1601 [2022-11-21 17:22:17,588 INFO L226 Difference]: Without dead ends: 1601 [2022-11-21 17:22:17,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:17,590 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:17,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:22:17,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2022-11-21 17:22:17,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1601. [2022-11-21 17:22:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1326 states have (on average 4.552036199095022) internal successors, (6036), 1600 states have internal predecessors, (6036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 6036 transitions. [2022-11-21 17:22:17,685 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 6036 transitions. Word has length 2 [2022-11-21 17:22:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:17,685 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 6036 transitions. [2022-11-21 17:22:17,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 6036 transitions. [2022-11-21 17:22:17,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 17:22:17,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:17,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 17:22:17,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:17,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:17,898 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:17,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:17,899 INFO L85 PathProgramCache]: Analyzing trace with hash 811695, now seen corresponding path program 1 times [2022-11-21 17:22:17,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:17,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894924859] [2022-11-21 17:22:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:17,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:17,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:17,901 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:17,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-21 17:22:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:17,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 17:22:17,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:18,135 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:22:18,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:22:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:18,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:22:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:18,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:18,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894924859] [2022-11-21 17:22:18,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894924859] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:22:18,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:22:18,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-21 17:22:18,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754413835] [2022-11-21 17:22:18,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:22:18,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:22:18,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:18,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:22:18,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:22:18,525 INFO L87 Difference]: Start difference. First operand 1601 states and 6036 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:19,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:19,669 INFO L93 Difference]: Finished difference Result 3201 states and 12077 transitions. [2022-11-21 17:22:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:22:19,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 17:22:19,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:19,699 INFO L225 Difference]: With dead ends: 3201 [2022-11-21 17:22:19,699 INFO L226 Difference]: Without dead ends: 3201 [2022-11-21 17:22:19,704 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 [2022-11-21 17:22:19,708 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 191 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:19,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 9 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 17:22:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2022-11-21 17:22:19,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 1604. [2022-11-21 17:22:19,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1329 states have (on average 4.55079006772009) internal successors, (6048), 1603 states have internal predecessors, (6048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 6048 transitions. [2022-11-21 17:22:19,870 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 6048 transitions. Word has length 3 [2022-11-21 17:22:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:19,870 INFO L495 AbstractCegarLoop]: Abstraction has 1604 states and 6048 transitions. [2022-11-21 17:22:19,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:19,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 6048 transitions. [2022-11-21 17:22:19,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 17:22:19,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:19,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 17:22:19,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:20,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:20,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:20,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:20,095 INFO L85 PathProgramCache]: Analyzing trace with hash 811895, now seen corresponding path program 1 times [2022-11-21 17:22:20,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:20,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304188590] [2022-11-21 17:22:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:20,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:20,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:20,097 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:20,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-21 17:22:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:20,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:22:20,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:20,275 INFO L321 Elim1Store]: treesize reduction 115, result has 16.1 percent of original size [2022-11-21 17:22:20,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 47 [2022-11-21 17:22:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:22:20,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:20,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:20,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304188590] [2022-11-21 17:22:20,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304188590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:20,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:20,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:22:20,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435198065] [2022-11-21 17:22:20,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:20,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:22:20,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:20,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:22:20,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:20,401 INFO L87 Difference]: Start difference. First operand 1604 states and 6048 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:20,754 INFO L93 Difference]: Finished difference Result 1309 states and 4784 transitions. [2022-11-21 17:22:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:22:20,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 17:22:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:20,764 INFO L225 Difference]: With dead ends: 1309 [2022-11-21 17:22:20,764 INFO L226 Difference]: Without dead ends: 1309 [2022-11-21 17:22:20,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:20,765 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:20,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:22:20,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-11-21 17:22:20,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1309. [2022-11-21 17:22:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1099 states have (on average 4.35304822565969) internal successors, (4784), 1308 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:20,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 4784 transitions. [2022-11-21 17:22:20,862 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 4784 transitions. Word has length 3 [2022-11-21 17:22:20,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:20,862 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 4784 transitions. [2022-11-21 17:22:20,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 4784 transitions. [2022-11-21 17:22:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 17:22:20,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:20,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 17:22:20,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:21,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:21,064 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:21,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:21,065 INFO L85 PathProgramCache]: Analyzing trace with hash 811896, now seen corresponding path program 1 times [2022-11-21 17:22:21,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:21,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710806029] [2022-11-21 17:22:21,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:21,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:21,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:21,067 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:21,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-21 17:22:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:21,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-21 17:22:21,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:21,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:22:21,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:22:21,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:22:21,288 INFO L321 Elim1Store]: treesize reduction 36, result has 43.8 percent of original size [2022-11-21 17:22:21,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 35 [2022-11-21 17:22:21,313 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-21 17:22:21,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-21 17:22:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:21,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:22:21,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:21,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:21,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710806029] [2022-11-21 17:22:21,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710806029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:22:21,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:22:21,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-21 17:22:21,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699474186] [2022-11-21 17:22:21,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:22:21,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:22:21,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:21,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:22:21,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:22:21,883 INFO L87 Difference]: Start difference. First operand 1309 states and 4784 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:23,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:23,152 INFO L93 Difference]: Finished difference Result 2316 states and 8290 transitions. [2022-11-21 17:22:23,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:22:23,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 17:22:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:23,172 INFO L225 Difference]: With dead ends: 2316 [2022-11-21 17:22:23,172 INFO L226 Difference]: Without dead ends: 2316 [2022-11-21 17:22:23,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:22:23,173 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 132 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:23,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 9 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 17:22:23,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-11-21 17:22:23,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1716. [2022-11-21 17:22:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1506 states have (on average 4.320053120849933) internal successors, (6506), 1715 states have internal predecessors, (6506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 6506 transitions. [2022-11-21 17:22:23,241 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 6506 transitions. Word has length 3 [2022-11-21 17:22:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:23,241 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 6506 transitions. [2022-11-21 17:22:23,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:23,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 6506 transitions. [2022-11-21 17:22:23,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:22:23,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:23,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:22:23,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:23,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:23,454 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:23,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:23,455 INFO L85 PathProgramCache]: Analyzing trace with hash 780250880, now seen corresponding path program 1 times [2022-11-21 17:22:23,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:23,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418680199] [2022-11-21 17:22:23,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:23,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:23,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:23,457 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:23,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-21 17:22:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:23,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 17:22:23,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:23,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:22:23,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:22:23,713 INFO L321 Elim1Store]: treesize reduction 49, result has 38.8 percent of original size [2022-11-21 17:22:23,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 38 [2022-11-21 17:22:23,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-21 17:22:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:23,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:22:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:24,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:24,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418680199] [2022-11-21 17:22:24,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418680199] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:22:24,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:22:24,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-21 17:22:24,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222187474] [2022-11-21 17:22:24,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:22:24,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:22:24,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:24,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:22:24,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:22:24,267 INFO L87 Difference]: Start difference. First operand 1716 states and 6506 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:25,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:25,138 INFO L93 Difference]: Finished difference Result 2218 states and 7996 transitions. [2022-11-21 17:22:25,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:22:25,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-21 17:22:25,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:25,154 INFO L225 Difference]: With dead ends: 2218 [2022-11-21 17:22:25,154 INFO L226 Difference]: Without dead ends: 2218 [2022-11-21 17:22:25,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:22:25,155 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 297 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:25,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 9 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 17:22:25,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2022-11-21 17:22:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 1667. [2022-11-21 17:22:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1477 states have (on average 4.300609343263372) internal successors, (6352), 1666 states have internal predecessors, (6352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6352 transitions. [2022-11-21 17:22:25,236 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6352 transitions. Word has length 5 [2022-11-21 17:22:25,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:25,236 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 6352 transitions. [2022-11-21 17:22:25,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:25,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6352 transitions. [2022-11-21 17:22:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:22:25,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:25,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:22:25,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:25,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:25,450 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:25,450 INFO L85 PathProgramCache]: Analyzing trace with hash 780250879, now seen corresponding path program 1 times [2022-11-21 17:22:25,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:25,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580689140] [2022-11-21 17:22:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:25,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:25,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:25,454 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:25,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-21 17:22:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:25,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 17:22:25,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:25,629 INFO L321 Elim1Store]: treesize reduction 101, result has 20.5 percent of original size [2022-11-21 17:22:25,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 44 [2022-11-21 17:22:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:22:25,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:25,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:25,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580689140] [2022-11-21 17:22:25,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580689140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:25,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:25,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:22:25,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538695011] [2022-11-21 17:22:25,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:25,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:22:25,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:25,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:22:25,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:25,664 INFO L87 Difference]: Start difference. First operand 1667 states and 6352 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:25,902 INFO L93 Difference]: Finished difference Result 1618 states and 6198 transitions. [2022-11-21 17:22:25,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:22:25,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-21 17:22:25,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:25,912 INFO L225 Difference]: With dead ends: 1618 [2022-11-21 17:22:25,912 INFO L226 Difference]: Without dead ends: 1618 [2022-11-21 17:22:25,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:25,913 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:25,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:22:25,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2022-11-21 17:22:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1618. [2022-11-21 17:22:25,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1448 states have (on average 4.280386740331492) internal successors, (6198), 1617 states have internal predecessors, (6198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 6198 transitions. [2022-11-21 17:22:25,967 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 6198 transitions. Word has length 5 [2022-11-21 17:22:25,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:25,968 INFO L495 AbstractCegarLoop]: Abstraction has 1618 states and 6198 transitions. [2022-11-21 17:22:25,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:25,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 6198 transitions. [2022-11-21 17:22:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 17:22:25,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:25,969 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-21 17:22:25,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:26,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:26,181 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:26,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:26,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1583897169, now seen corresponding path program 2 times [2022-11-21 17:22:26,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:26,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035731502] [2022-11-21 17:22:26,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:22:26,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:26,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:26,195 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:26,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-21 17:22:26,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:22:26,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:22:26,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 17:22:26,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:26,431 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:22:26,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:22:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:26,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:22:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:27,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:27,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035731502] [2022-11-21 17:22:27,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035731502] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:22:27,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:22:27,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 17:22:27,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195084265] [2022-11-21 17:22:27,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:22:27,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:22:27,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:22:27,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:22:27,292 INFO L87 Difference]: Start difference. First operand 1618 states and 6198 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:33,426 INFO L93 Difference]: Finished difference Result 10552 states and 39045 transitions. [2022-11-21 17:22:33,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:22:33,427 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 17:22:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:33,497 INFO L225 Difference]: With dead ends: 10552 [2022-11-21 17:22:33,497 INFO L226 Difference]: Without dead ends: 10552 [2022-11-21 17:22:33,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:22:33,498 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 976 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:33,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 72 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-21 17:22:33,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10552 states. [2022-11-21 17:22:33,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10552 to 1624. [2022-11-21 17:22:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1454 states have (on average 4.275103163686382) internal successors, (6216), 1623 states have internal predecessors, (6216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 6216 transitions. [2022-11-21 17:22:33,708 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 6216 transitions. Word has length 6 [2022-11-21 17:22:33,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:33,709 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 6216 transitions. [2022-11-21 17:22:33,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:33,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 6216 transitions. [2022-11-21 17:22:33,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 17:22:33,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:33,710 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-21 17:22:33,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:33,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:33,924 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:33,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1583896968, now seen corresponding path program 2 times [2022-11-21 17:22:33,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:33,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837915651] [2022-11-21 17:22:33,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:22:33,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:33,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:33,926 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:33,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-21 17:22:34,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 17:22:34,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:22:34,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 17:22:34,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:34,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:22:34,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:22:34,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:22:34,200 INFO L321 Elim1Store]: treesize reduction 36, result has 43.8 percent of original size [2022-11-21 17:22:34,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 35 [2022-11-21 17:22:34,227 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-21 17:22:34,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-21 17:22:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 17:22:34,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:34,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:34,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837915651] [2022-11-21 17:22:34,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837915651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:34,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:34,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:22:34,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859070077] [2022-11-21 17:22:34,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:34,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:22:34,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:34,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:22:34,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:34,422 INFO L87 Difference]: Start difference. First operand 1624 states and 6216 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:34,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:34,698 INFO L93 Difference]: Finished difference Result 1623 states and 6209 transitions. [2022-11-21 17:22:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:22:34,699 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 6 [2022-11-21 17:22:34,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:34,707 INFO L225 Difference]: With dead ends: 1623 [2022-11-21 17:22:34,707 INFO L226 Difference]: Without dead ends: 1623 [2022-11-21 17:22:34,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:34,709 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:34,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:22:34,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2022-11-21 17:22:34,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1623. [2022-11-21 17:22:34,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1454 states have (on average 4.27028885832187) internal successors, (6209), 1622 states have internal predecessors, (6209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 6209 transitions. [2022-11-21 17:22:34,808 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 6209 transitions. Word has length 6 [2022-11-21 17:22:34,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:34,809 INFO L495 AbstractCegarLoop]: Abstraction has 1623 states and 6209 transitions. [2022-11-21 17:22:34,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:34,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 6209 transitions. [2022-11-21 17:22:34,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 17:22:34,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:34,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 17:22:34,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:35,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:35,022 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:35,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:35,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1582033148, now seen corresponding path program 1 times [2022-11-21 17:22:35,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:35,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452851751] [2022-11-21 17:22:35,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:35,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:35,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:35,024 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:35,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-21 17:22:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:35,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 17:22:35,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:35,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:22:35,431 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 25 treesize of output 21 [2022-11-21 17:22:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:35,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:35,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452851751] [2022-11-21 17:22:35,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452851751] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:22:35,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:22:35,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 17:22:35,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259820960] [2022-11-21 17:22:35,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:22:35,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:22:35,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:35,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:22:35,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:22:35,513 INFO L87 Difference]: Start difference. First operand 1623 states and 6209 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:37,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:37,489 INFO L93 Difference]: Finished difference Result 4725 states and 17539 transitions. [2022-11-21 17:22:37,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:22:37,490 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 17:22:37,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:37,518 INFO L225 Difference]: With dead ends: 4725 [2022-11-21 17:22:37,518 INFO L226 Difference]: Without dead ends: 4725 [2022-11-21 17:22:37,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:22:37,519 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 572 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:37,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 19 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 17:22:37,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4725 states. [2022-11-21 17:22:37,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4725 to 1837. [2022-11-21 17:22:37,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1668 states have (on average 4.7200239808153475) internal successors, (7873), 1836 states have internal predecessors, (7873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 7873 transitions. [2022-11-21 17:22:37,650 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 7873 transitions. Word has length 6 [2022-11-21 17:22:37,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:37,651 INFO L495 AbstractCegarLoop]: Abstraction has 1837 states and 7873 transitions. [2022-11-21 17:22:37,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:37,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 7873 transitions. [2022-11-21 17:22:37,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 17:22:37,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:37,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 17:22:37,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:37,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:37,864 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:37,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:37,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1582033146, now seen corresponding path program 1 times [2022-11-21 17:22:37,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:37,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367795140] [2022-11-21 17:22:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:37,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:37,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:37,867 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:37,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-21 17:22:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:37,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:22:37,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:38,062 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-21 17:22:38,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-21 17:22:38,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:22:38,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:38,095 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:38,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367795140] [2022-11-21 17:22:38,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367795140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:38,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:38,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:22:38,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962455230] [2022-11-21 17:22:38,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:38,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:22:38,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:38,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:22:38,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:22:38,096 INFO L87 Difference]: Start difference. First operand 1837 states and 7873 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) [2022-11-21 17:22:38,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:38,353 INFO L93 Difference]: Finished difference Result 1217 states and 5125 transitions. [2022-11-21 17:22:38,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:22:38,354 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 [2022-11-21 17:22:38,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:38,359 INFO L225 Difference]: With dead ends: 1217 [2022-11-21 17:22:38,359 INFO L226 Difference]: Without dead ends: 1217 [2022-11-21 17:22:38,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:22:38,360 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:38,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 3 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:22:38,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-11-21 17:22:38,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2022-11-21 17:22:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1138 states have (on average 4.503514938488577) internal successors, (5125), 1216 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 5125 transitions. [2022-11-21 17:22:38,398 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 5125 transitions. Word has length 6 [2022-11-21 17:22:38,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:38,398 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 5125 transitions. [2022-11-21 17:22:38,399 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) [2022-11-21 17:22:38,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 5125 transitions. [2022-11-21 17:22:38,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 17:22:38,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:38,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 17:22:38,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:38,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:38,611 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:38,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:38,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1582033096, now seen corresponding path program 1 times [2022-11-21 17:22:38,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:38,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712384527] [2022-11-21 17:22:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:38,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:38,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:38,612 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:38,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-21 17:22:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:38,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 17:22:38,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:38,985 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:22:38,986 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:22:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:22:39,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:39,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:39,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712384527] [2022-11-21 17:22:39,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712384527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:39,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:39,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:22:39,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046933902] [2022-11-21 17:22:39,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:39,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:22:39,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:39,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:22:39,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:22:39,120 INFO L87 Difference]: Start difference. First operand 1217 states and 5125 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:39,571 INFO L93 Difference]: Finished difference Result 1779 states and 7329 transitions. [2022-11-21 17:22:39,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:22:39,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 17:22:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:39,578 INFO L225 Difference]: With dead ends: 1779 [2022-11-21 17:22:39,579 INFO L226 Difference]: Without dead ends: 1779 [2022-11-21 17:22:39,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:22:39,580 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 117 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:39,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 7 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 17:22:39,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2022-11-21 17:22:39,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1377. [2022-11-21 17:22:39,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1298 states have (on average 4.660246533127889) internal successors, (6049), 1376 states have internal predecessors, (6049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 6049 transitions. [2022-11-21 17:22:39,671 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 6049 transitions. Word has length 6 [2022-11-21 17:22:39,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:39,672 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 6049 transitions. [2022-11-21 17:22:39,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:39,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 6049 transitions. [2022-11-21 17:22:39,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 17:22:39,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:39,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:22:39,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:39,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:39,888 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:39,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:39,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1798384374, now seen corresponding path program 1 times [2022-11-21 17:22:39,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:39,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258507384] [2022-11-21 17:22:39,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:39,890 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:39,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:39,892 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:39,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-21 17:22:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:39,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:22:39,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:22:40,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:40,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:40,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258507384] [2022-11-21 17:22:40,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258507384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:40,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:40,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:22:40,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536093203] [2022-11-21 17:22:40,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:40,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:22:40,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:40,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:22:40,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:40,014 INFO L87 Difference]: Start difference. First operand 1377 states and 6049 transitions. Second operand has 3 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) [2022-11-21 17:22:40,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:40,371 INFO L93 Difference]: Finished difference Result 1779 states and 7169 transitions. [2022-11-21 17:22:40,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:22:40,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2022-11-21 17:22:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:40,379 INFO L225 Difference]: With dead ends: 1779 [2022-11-21 17:22:40,379 INFO L226 Difference]: Without dead ends: 1779 [2022-11-21 17:22:40,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:40,380 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:40,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 5 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:22:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2022-11-21 17:22:40,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1377. [2022-11-21 17:22:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1298 states have (on average 4.536979969183359) internal successors, (5889), 1376 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:40,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 5889 transitions. [2022-11-21 17:22:40,451 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 5889 transitions. Word has length 7 [2022-11-21 17:22:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:40,452 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 5889 transitions. [2022-11-21 17:22:40,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-21 17:22:40,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 5889 transitions. [2022-11-21 17:22:40,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 17:22:40,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:40,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:22:40,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:40,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:40,667 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:40,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:40,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1798165039, now seen corresponding path program 1 times [2022-11-21 17:22:40,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:40,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509736018] [2022-11-21 17:22:40,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:40,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:40,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:40,669 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:40,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-21 17:22:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:40,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 17:22:40,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:40,885 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-21 17:22:40,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 29 [2022-11-21 17:22:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:22:40,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:40,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:40,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509736018] [2022-11-21 17:22:40,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509736018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:40,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:40,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 17:22:40,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695272704] [2022-11-21 17:22:40,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:40,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:22:40,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:40,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:22:40,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:40,920 INFO L87 Difference]: Start difference. First operand 1377 states and 5889 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:41,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:41,127 INFO L93 Difference]: Finished difference Result 1324 states and 5649 transitions. [2022-11-21 17:22:41,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:22:41,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-21 17:22:41,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:41,133 INFO L225 Difference]: With dead ends: 1324 [2022-11-21 17:22:41,133 INFO L226 Difference]: Without dead ends: 1324 [2022-11-21 17:22:41,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:41,134 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:41,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:22:41,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2022-11-21 17:22:41,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1324. [2022-11-21 17:22:41,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1257 states have (on average 4.494033412887828) internal successors, (5649), 1323 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 5649 transitions. [2022-11-21 17:22:41,202 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 5649 transitions. Word has length 7 [2022-11-21 17:22:41,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:41,203 INFO L495 AbstractCegarLoop]: Abstraction has 1324 states and 5649 transitions. [2022-11-21 17:22:41,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:41,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 5649 transitions. [2022-11-21 17:22:41,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 17:22:41,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:41,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:22:41,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:41,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:41,425 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:41,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:41,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1798165038, now seen corresponding path program 1 times [2022-11-21 17:22:41,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:41,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49997083] [2022-11-21 17:22:41,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:41,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:41,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:41,427 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:41,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-21 17:22:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:41,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 17:22:41,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:41,729 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:22:41,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:22:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:41,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:22:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:42,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:42,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49997083] [2022-11-21 17:22:42,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49997083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:22:42,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:22:42,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-21 17:22:42,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943024301] [2022-11-21 17:22:42,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:22:42,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:22:42,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:42,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:22:42,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:22:42,253 INFO L87 Difference]: Start difference. First operand 1324 states and 5649 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:42,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:42,910 INFO L93 Difference]: Finished difference Result 1583 states and 6531 transitions. [2022-11-21 17:22:42,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:22:42,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-21 17:22:42,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:42,915 INFO L225 Difference]: With dead ends: 1583 [2022-11-21 17:22:42,915 INFO L226 Difference]: Without dead ends: 1583 [2022-11-21 17:22:42,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:22:42,916 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 100 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:42,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 9 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 17:22:42,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2022-11-21 17:22:42,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1271. [2022-11-21 17:22:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1216 states have (on average 4.448190789473684) internal successors, (5409), 1270 states have internal predecessors, (5409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 5409 transitions. [2022-11-21 17:22:42,955 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 5409 transitions. Word has length 7 [2022-11-21 17:22:42,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:42,956 INFO L495 AbstractCegarLoop]: Abstraction has 1271 states and 5409 transitions. [2022-11-21 17:22:42,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 5409 transitions. [2022-11-21 17:22:42,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 17:22:42,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:42,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:22:42,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:43,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:43,170 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:43,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:43,170 INFO L85 PathProgramCache]: Analyzing trace with hash 84593103, now seen corresponding path program 1 times [2022-11-21 17:22:43,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:43,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033779910] [2022-11-21 17:22:43,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:43,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:43,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:43,172 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:43,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-21 17:22:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:43,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:22:43,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:43,455 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:22:43,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:22:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:43,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:22:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:44,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:44,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033779910] [2022-11-21 17:22:44,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033779910] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:22:44,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:22:44,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 17:22:44,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725328897] [2022-11-21 17:22:44,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:22:44,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 17:22:44,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:44,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 17:22:44,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:22:44,456 INFO L87 Difference]: Start difference. First operand 1271 states and 5409 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:47,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:47,099 INFO L93 Difference]: Finished difference Result 1287 states and 5039 transitions. [2022-11-21 17:22:47,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:22:47,100 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-21 17:22:47,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:47,107 INFO L225 Difference]: With dead ends: 1287 [2022-11-21 17:22:47,107 INFO L226 Difference]: Without dead ends: 1285 [2022-11-21 17:22:47,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:22:47,108 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 175 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:47,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 36 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 17:22:47,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2022-11-21 17:22:47,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1183. [2022-11-21 17:22:47,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1120 states have (on average 4.245535714285714) internal successors, (4755), 1182 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:47,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 4755 transitions. [2022-11-21 17:22:47,176 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 4755 transitions. Word has length 8 [2022-11-21 17:22:47,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:47,176 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 4755 transitions. [2022-11-21 17:22:47,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 4755 transitions. [2022-11-21 17:22:47,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 17:22:47,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:47,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:22:47,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:47,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:47,402 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:47,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:47,403 INFO L85 PathProgramCache]: Analyzing trace with hash 91452213, now seen corresponding path program 1 times [2022-11-21 17:22:47,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:47,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477801440] [2022-11-21 17:22:47,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:47,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:47,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:47,406 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:47,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-21 17:22:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:47,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 17:22:47,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:47,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:47,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:22:47,816 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 25 treesize of output 21 [2022-11-21 17:22:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:47,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:47,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477801440] [2022-11-21 17:22:47,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477801440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:22:47,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:22:47,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 17:22:47,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673138889] [2022-11-21 17:22:47,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:22:47,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:22:47,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:47,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:22:47,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:22:47,898 INFO L87 Difference]: Start difference. First operand 1183 states and 4755 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:49,525 INFO L93 Difference]: Finished difference Result 2553 states and 10428 transitions. [2022-11-21 17:22:49,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:22:49,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-21 17:22:49,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:49,534 INFO L225 Difference]: With dead ends: 2553 [2022-11-21 17:22:49,535 INFO L226 Difference]: Without dead ends: 2553 [2022-11-21 17:22:49,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:22:49,535 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 473 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:49,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 19 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 17:22:49,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2022-11-21 17:22:49,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 1372. [2022-11-21 17:22:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1309 states have (on average 4.633307868601986) internal successors, (6065), 1371 states have internal predecessors, (6065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 6065 transitions. [2022-11-21 17:22:49,585 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 6065 transitions. Word has length 8 [2022-11-21 17:22:49,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:49,586 INFO L495 AbstractCegarLoop]: Abstraction has 1372 states and 6065 transitions. [2022-11-21 17:22:49,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:49,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 6065 transitions. [2022-11-21 17:22:49,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 17:22:49,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:49,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:22:49,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:49,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:49,799 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:49,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:49,799 INFO L85 PathProgramCache]: Analyzing trace with hash 91452233, now seen corresponding path program 1 times [2022-11-21 17:22:49,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:49,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891788144] [2022-11-21 17:22:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:49,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:49,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:49,801 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:49,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-21 17:22:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:49,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 17:22:49,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:50,070 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:22:50,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:22:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:22:50,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:50,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:50,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891788144] [2022-11-21 17:22:50,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891788144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:50,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:50,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:22:50,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188466871] [2022-11-21 17:22:50,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:50,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:22:50,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:50,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:22:50,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:22:50,275 INFO L87 Difference]: Start difference. First operand 1372 states and 6065 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) [2022-11-21 17:22:50,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:50,893 INFO L93 Difference]: Finished difference Result 1949 states and 8504 transitions. [2022-11-21 17:22:50,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:22:50,894 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 [2022-11-21 17:22:50,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:50,901 INFO L225 Difference]: With dead ends: 1949 [2022-11-21 17:22:50,901 INFO L226 Difference]: Without dead ends: 1949 [2022-11-21 17:22:50,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:22:50,902 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 103 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:50,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 4 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 17:22:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2022-11-21 17:22:50,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1561. [2022-11-21 17:22:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1498 states have (on average 4.797062750333779) internal successors, (7186), 1560 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:50,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7186 transitions. [2022-11-21 17:22:50,961 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7186 transitions. Word has length 8 [2022-11-21 17:22:50,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:50,961 INFO L495 AbstractCegarLoop]: Abstraction has 1561 states and 7186 transitions. [2022-11-21 17:22:50,962 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) [2022-11-21 17:22:50,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7186 transitions. [2022-11-21 17:22:50,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 17:22:50,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:50,963 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:22:50,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:51,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:51,176 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:51,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:51,177 INFO L85 PathProgramCache]: Analyzing trace with hash 426051279, now seen corresponding path program 2 times [2022-11-21 17:22:51,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:51,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408279619] [2022-11-21 17:22:51,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:22:51,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:51,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:51,179 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:51,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-21 17:22:51,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:22:51,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:22:51,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 17:22:51,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:51,465 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:22:51,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:22:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:22:51,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:22:52,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:22:52,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:52,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408279619] [2022-11-21 17:22:52,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408279619] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:22:52,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:22:52,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 17:22:52,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29643692] [2022-11-21 17:22:52,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:22:52,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:22:52,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:52,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:22:52,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:22:52,671 INFO L87 Difference]: Start difference. First operand 1561 states and 7186 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:56,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:56,908 INFO L93 Difference]: Finished difference Result 3769 states and 17434 transitions. [2022-11-21 17:22:56,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:22:56,909 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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 9 [2022-11-21 17:22:56,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:56,925 INFO L225 Difference]: With dead ends: 3769 [2022-11-21 17:22:56,925 INFO L226 Difference]: Without dead ends: 3769 [2022-11-21 17:22:56,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:22:56,926 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 566 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:56,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 33 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-21 17:22:56,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2022-11-21 17:22:57,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 2665. [2022-11-21 17:22:57,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2602 states have (on average 5.224442736356648) internal successors, (13594), 2664 states have internal predecessors, (13594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 13594 transitions. [2022-11-21 17:22:57,047 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 13594 transitions. Word has length 9 [2022-11-21 17:22:57,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:57,047 INFO L495 AbstractCegarLoop]: Abstraction has 2665 states and 13594 transitions. [2022-11-21 17:22:57,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:57,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 13594 transitions. [2022-11-21 17:22:57,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 17:22:57,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:57,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:22:57,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:57,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:57,264 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:57,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:57,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1459945726, now seen corresponding path program 1 times [2022-11-21 17:22:57,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:57,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795061962] [2022-11-21 17:22:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:57,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:57,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:57,267 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:57,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-21 17:22:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:57,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:22:57,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:22:57,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:57,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:57,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795061962] [2022-11-21 17:22:57,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795061962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:57,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:57,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:22:57,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271819439] [2022-11-21 17:22:57,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:57,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:22:57,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:57,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:22:57,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:57,423 INFO L87 Difference]: Start difference. First operand 2665 states and 13594 transitions. Second operand has 3 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) [2022-11-21 17:22:57,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:57,787 INFO L93 Difference]: Finished difference Result 3325 states and 15835 transitions. [2022-11-21 17:22:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:22:57,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2022-11-21 17:22:57,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:57,804 INFO L225 Difference]: With dead ends: 3325 [2022-11-21 17:22:57,804 INFO L226 Difference]: Without dead ends: 3325 [2022-11-21 17:22:57,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:57,806 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:57,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 5 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:22:57,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2022-11-21 17:22:57,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 2665. [2022-11-21 17:22:57,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2602 states have (on average 5.099538816295158) internal successors, (13269), 2664 states have internal predecessors, (13269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 13269 transitions. [2022-11-21 17:22:57,963 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 13269 transitions. Word has length 9 [2022-11-21 17:22:57,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:57,965 INFO L495 AbstractCegarLoop]: Abstraction has 2665 states and 13269 transitions. [2022-11-21 17:22:57,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-21 17:22:57,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 13269 transitions. [2022-11-21 17:22:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 17:22:57,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:57,966 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:22:57,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:58,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:58,179 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:58,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash 322689107, now seen corresponding path program 1 times [2022-11-21 17:22:58,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:58,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081901372] [2022-11-21 17:22:58,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:58,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:58,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:58,181 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:58,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-21 17:22:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:58,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:22:58,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 17:22:58,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:58,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:58,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081901372] [2022-11-21 17:22:58,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081901372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:58,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:58,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:22:58,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797900788] [2022-11-21 17:22:58,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:58,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:22:58,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:58,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:22:58,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:58,318 INFO L87 Difference]: Start difference. First operand 2665 states and 13269 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2022-11-21 17:22:58,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:58,696 INFO L93 Difference]: Finished difference Result 2757 states and 12615 transitions. [2022-11-21 17:22:58,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:22:58,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) 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 10 [2022-11-21 17:22:58,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:58,707 INFO L225 Difference]: With dead ends: 2757 [2022-11-21 17:22:58,707 INFO L226 Difference]: Without dead ends: 2757 [2022-11-21 17:22:58,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:22:58,708 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:58,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 8 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 17:22:58,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2022-11-21 17:22:58,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2251. [2022-11-21 17:22:58,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 2206 states have (on average 4.729827742520399) internal successors, (10434), 2250 states have internal predecessors, (10434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:58,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 10434 transitions. [2022-11-21 17:22:58,803 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 10434 transitions. Word has length 10 [2022-11-21 17:22:58,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:58,803 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 10434 transitions. [2022-11-21 17:22:58,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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) [2022-11-21 17:22:58,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 10434 transitions. [2022-11-21 17:22:58,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 17:22:58,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:58,805 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:22:58,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:59,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:59,020 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:59,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:59,020 INFO L85 PathProgramCache]: Analyzing trace with hash 535539205, now seen corresponding path program 1 times [2022-11-21 17:22:59,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:59,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083322266] [2022-11-21 17:22:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:59,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:59,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:59,023 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:59,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-21 17:22:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:59,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:22:59,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:22:59,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:59,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:22:59,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083322266] [2022-11-21 17:22:59,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083322266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:59,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:59,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:22:59,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836270198] [2022-11-21 17:22:59,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:59,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:22:59,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:22:59,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:22:59,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:22:59,273 INFO L87 Difference]: Start difference. First operand 2251 states and 10434 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) [2022-11-21 17:22:59,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:22:59,507 INFO L93 Difference]: Finished difference Result 1731 states and 7669 transitions. [2022-11-21 17:22:59,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:22:59,508 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 10 [2022-11-21 17:22:59,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:22:59,515 INFO L225 Difference]: With dead ends: 1731 [2022-11-21 17:22:59,515 INFO L226 Difference]: Without dead ends: 1731 [2022-11-21 17:22:59,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:22:59,516 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:22:59,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 3 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:22:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2022-11-21 17:22:59,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1673. [2022-11-21 17:22:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1646 states have (on average 4.544349939246659) internal successors, (7480), 1672 states have internal predecessors, (7480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:59,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 7480 transitions. [2022-11-21 17:22:59,568 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 7480 transitions. Word has length 10 [2022-11-21 17:22:59,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:22:59,569 INFO L495 AbstractCegarLoop]: Abstraction has 1673 states and 7480 transitions. [2022-11-21 17:22:59,569 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) [2022-11-21 17:22:59,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 7480 transitions. [2022-11-21 17:22:59,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 17:22:59,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:22:59,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:22:59,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-21 17:22:59,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:59,783 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:22:59,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:59,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1993016244, now seen corresponding path program 1 times [2022-11-21 17:22:59,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:22:59,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989379797] [2022-11-21 17:22:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:59,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:22:59,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:22:59,785 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:22:59,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-21 17:22:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:59,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:22:59,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:23:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:00,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:23:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:00,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:23:00,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989379797] [2022-11-21 17:23:00,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989379797] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:23:00,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:23:00,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 17:23:00,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159862931] [2022-11-21 17:23:00,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:23:00,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:23:00,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:23:00,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:23:00,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:23:00,342 INFO L87 Difference]: Start difference. First operand 1673 states and 7480 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:01,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:01,456 INFO L93 Difference]: Finished difference Result 1699 states and 7384 transitions. [2022-11-21 17:23:01,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:23:01,457 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-21 17:23:01,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:01,461 INFO L225 Difference]: With dead ends: 1699 [2022-11-21 17:23:01,461 INFO L226 Difference]: Without dead ends: 1693 [2022-11-21 17:23:01,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:23:01,462 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 198 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:01,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 19 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 17:23:01,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2022-11-21 17:23:01,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1657. [2022-11-21 17:23:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1636 states have (on average 4.446210268948655) internal successors, (7274), 1656 states have internal predecessors, (7274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:01,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 7274 transitions. [2022-11-21 17:23:01,502 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 7274 transitions. Word has length 10 [2022-11-21 17:23:01,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:01,503 INFO L495 AbstractCegarLoop]: Abstraction has 1657 states and 7274 transitions. [2022-11-21 17:23:01,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:01,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 7274 transitions. [2022-11-21 17:23:01,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 17:23:01,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:01,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:01,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-21 17:23:01,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:01,716 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:23:01,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:01,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1986276695, now seen corresponding path program 1 times [2022-11-21 17:23:01,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:23:01,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845242168] [2022-11-21 17:23:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:01,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:01,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:23:01,719 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:23:01,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-21 17:23:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:01,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:23:01,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:23:02,003 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:23:02,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:23:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:02,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:23:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:03,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:23:03,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845242168] [2022-11-21 17:23:03,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845242168] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:23:03,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:23:03,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 17:23:03,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129916092] [2022-11-21 17:23:03,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:23:03,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 17:23:03,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:23:03,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 17:23:03,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:23:03,142 INFO L87 Difference]: Start difference. First operand 1657 states and 7274 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:05,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:05,842 INFO L93 Difference]: Finished difference Result 1541 states and 6710 transitions. [2022-11-21 17:23:05,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:23:05,844 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-21 17:23:05,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:05,850 INFO L225 Difference]: With dead ends: 1541 [2022-11-21 17:23:05,850 INFO L226 Difference]: Without dead ends: 1485 [2022-11-21 17:23:05,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-21 17:23:05,851 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:05,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 40 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 17:23:05,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2022-11-21 17:23:05,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1477. [2022-11-21 17:23:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1458 states have (on average 4.491769547325103) internal successors, (6549), 1476 states have internal predecessors, (6549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:05,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 6549 transitions. [2022-11-21 17:23:05,889 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 6549 transitions. Word has length 10 [2022-11-21 17:23:05,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:05,889 INFO L495 AbstractCegarLoop]: Abstraction has 1477 states and 6549 transitions. [2022-11-21 17:23:05,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:05,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 6549 transitions. [2022-11-21 17:23:05,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 17:23:05,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:05,890 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:05,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-21 17:23:06,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:06,090 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:23:06,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:06,091 INFO L85 PathProgramCache]: Analyzing trace with hash -578158412, now seen corresponding path program 2 times [2022-11-21 17:23:06,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:23:06,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544485521] [2022-11-21 17:23:06,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:23:06,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:06,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:23:06,092 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:23:06,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-21 17:23:06,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 17:23:06,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:23:06,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 17:23:06,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:23:06,400 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:23:06,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:23:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:23:06,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:23:06,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:23:06,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544485521] [2022-11-21 17:23:06,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544485521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:06,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:06,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:23:06,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782833467] [2022-11-21 17:23:06,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:06,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:23:06,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:23:06,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:23:06,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:23:06,639 INFO L87 Difference]: Start difference. First operand 1477 states and 6549 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) [2022-11-21 17:23:07,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:07,261 INFO L93 Difference]: Finished difference Result 1025 states and 4421 transitions. [2022-11-21 17:23:07,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:23:07,262 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 11 [2022-11-21 17:23:07,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:07,265 INFO L225 Difference]: With dead ends: 1025 [2022-11-21 17:23:07,265 INFO L226 Difference]: Without dead ends: 1025 [2022-11-21 17:23:07,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:23:07,266 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 74 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:07,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 6 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 17:23:07,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2022-11-21 17:23:07,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1025. [2022-11-21 17:23:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1018 states have (on average 4.342829076620825) internal successors, (4421), 1024 states have internal predecessors, (4421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:07,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 4421 transitions. [2022-11-21 17:23:07,287 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 4421 transitions. Word has length 11 [2022-11-21 17:23:07,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:07,287 INFO L495 AbstractCegarLoop]: Abstraction has 1025 states and 4421 transitions. [2022-11-21 17:23:07,287 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) [2022-11-21 17:23:07,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 4421 transitions. [2022-11-21 17:23:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 17:23:07,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:07,288 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:07,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-21 17:23:07,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:07,489 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:23:07,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:07,489 INFO L85 PathProgramCache]: Analyzing trace with hash -584897961, now seen corresponding path program 2 times [2022-11-21 17:23:07,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:23:07,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430784929] [2022-11-21 17:23:07,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:23:07,490 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 [2022-11-21 17:23:07,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:23:07,491 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:23:07,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-21 17:23:07,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:23:07,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:23:07,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 17:23:07,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:23:07,828 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:23:07,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:23:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:23:08,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:23:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:23:08,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:23:08,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430784929] [2022-11-21 17:23:08,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430784929] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:23:08,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:23:08,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 17:23:08,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125055368] [2022-11-21 17:23:08,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:23:08,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:23:08,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:23:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:23:08,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:23:08,985 INFO L87 Difference]: Start difference. First operand 1025 states and 4421 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:11,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:11,671 INFO L93 Difference]: Finished difference Result 2479 states and 11076 transitions. [2022-11-21 17:23:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:23:11,673 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-21 17:23:11,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:11,680 INFO L225 Difference]: With dead ends: 2479 [2022-11-21 17:23:11,681 INFO L226 Difference]: Without dead ends: 2479 [2022-11-21 17:23:11,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:23:11,681 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 331 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:11,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 12 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 17:23:11,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2022-11-21 17:23:11,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 1905. [2022-11-21 17:23:11,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1898 states have (on average 4.883561643835616) internal successors, (9269), 1904 states have internal predecessors, (9269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:11,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 9269 transitions. [2022-11-21 17:23:11,746 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 9269 transitions. Word has length 11 [2022-11-21 17:23:11,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:11,747 INFO L495 AbstractCegarLoop]: Abstraction has 1905 states and 9269 transitions. [2022-11-21 17:23:11,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:11,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 9269 transitions. [2022-11-21 17:23:11,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 17:23:11,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:11,748 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-21 17:23:11,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-21 17:23:11,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:11,959 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:23:11,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:11,959 INFO L85 PathProgramCache]: Analyzing trace with hash -43088465, now seen corresponding path program 3 times [2022-11-21 17:23:11,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:23:11,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805326317] [2022-11-21 17:23:11,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:23:11,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:11,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:23:11,961 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:23:11,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-21 17:23:12,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-21 17:23:12,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:23:12,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-21 17:23:12,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:23:12,342 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:23:12,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:23:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:12,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:23:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:16,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:23:16,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805326317] [2022-11-21 17:23:16,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805326317] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:23:16,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:23:16,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-21 17:23:16,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680255731] [2022-11-21 17:23:16,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:23:16,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 17:23:16,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:23:16,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 17:23:16,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:23:16,198 INFO L87 Difference]: Start difference. First operand 1905 states and 9269 transitions. Second operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:45,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:45,355 INFO L93 Difference]: Finished difference Result 36030 states and 180509 transitions. [2022-11-21 17:23:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 17:23:45,356 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-21 17:23:45,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:45,773 INFO L225 Difference]: With dead ends: 36030 [2022-11-21 17:23:45,773 INFO L226 Difference]: Without dead ends: 36030 [2022-11-21 17:23:45,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 17:23:45,774 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 3180 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 3167 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3180 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:45,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3180 Valid, 360 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3167 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2022-11-21 17:23:45,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36030 states. [2022-11-21 17:23:46,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36030 to 1917. [2022-11-21 17:23:46,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1910 states have (on average 4.86544502617801) internal successors, (9293), 1916 states have internal predecessors, (9293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 9293 transitions. [2022-11-21 17:23:46,272 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 9293 transitions. Word has length 12 [2022-11-21 17:23:46,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:46,272 INFO L495 AbstractCegarLoop]: Abstraction has 1917 states and 9293 transitions. [2022-11-21 17:23:46,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 9293 transitions. [2022-11-21 17:23:46,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 17:23:46,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:46,274 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:46,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-21 17:23:46,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:46,484 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:23:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash -951965260, now seen corresponding path program 1 times [2022-11-21 17:23:46,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:23:46,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181726821] [2022-11-21 17:23:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:46,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:46,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:23:46,486 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:23:46,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-21 17:23:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:46,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 17:23:46,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:23:46,829 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:23:46,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:23:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:23:47,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:23:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:23:48,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:23:48,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181726821] [2022-11-21 17:23:48,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181726821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:23:48,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:23:48,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-11-21 17:23:48,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543050619] [2022-11-21 17:23:48,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:23:48,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 17:23:48,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:23:48,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 17:23:48,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:23:48,386 INFO L87 Difference]: Start difference. First operand 1917 states and 9293 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:55,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:55,265 INFO L93 Difference]: Finished difference Result 2939 states and 13428 transitions. [2022-11-21 17:23:55,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 17:23:55,266 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 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 12 [2022-11-21 17:23:55,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:55,278 INFO L225 Difference]: With dead ends: 2939 [2022-11-21 17:23:55,278 INFO L226 Difference]: Without dead ends: 2939 [2022-11-21 17:23:55,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:23:55,279 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 562 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:55,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 28 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-21 17:23:55,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-11-21 17:23:55,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1917. [2022-11-21 17:23:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1910 states have (on average 4.635078534031414) internal successors, (8853), 1916 states have internal predecessors, (8853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:55,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 8853 transitions. [2022-11-21 17:23:55,330 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 8853 transitions. Word has length 12 [2022-11-21 17:23:55,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:55,330 INFO L495 AbstractCegarLoop]: Abstraction has 1917 states and 8853 transitions. [2022-11-21 17:23:55,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:55,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 8853 transitions. [2022-11-21 17:23:55,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 17:23:55,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:55,331 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1] [2022-11-21 17:23:55,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-21 17:23:55,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:55,533 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:23:55,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:55,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1555340268, now seen corresponding path program 3 times [2022-11-21 17:23:55,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:23:55,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247656206] [2022-11-21 17:23:55,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:23:55,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:55,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:23:55,534 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:23:55,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-21 17:23:55,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 17:23:55,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:23:55,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 17:23:55,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:23:55,947 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:23:55,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:23:56,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-21 17:23:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 17:23:56,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:23:56,637 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 17:23:56,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:23:56,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247656206] [2022-11-21 17:23:56,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247656206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:23:56,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:23:56,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-21 17:23:56,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467067877] [2022-11-21 17:23:56,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:23:56,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 17:23:56,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:23:56,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 17:23:56,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:23:56,640 INFO L87 Difference]: Start difference. First operand 1917 states and 8853 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 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) [2022-11-21 17:23:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:58,876 INFO L93 Difference]: Finished difference Result 2680 states and 11811 transitions. [2022-11-21 17:23:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 17:23:58,876 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 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 15 [2022-11-21 17:23:58,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:58,884 INFO L225 Difference]: With dead ends: 2680 [2022-11-21 17:23:58,884 INFO L226 Difference]: Without dead ends: 2680 [2022-11-21 17:23:58,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:23:58,885 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 266 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:58,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 94 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 17:23:58,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2022-11-21 17:23:58,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2436. [2022-11-21 17:23:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 2429 states have (on average 4.53314121037464) internal successors, (11011), 2435 states have internal predecessors, (11011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:58,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 11011 transitions. [2022-11-21 17:23:58,937 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 11011 transitions. Word has length 15 [2022-11-21 17:23:58,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:58,938 INFO L495 AbstractCegarLoop]: Abstraction has 2436 states and 11011 transitions. [2022-11-21 17:23:58,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 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) [2022-11-21 17:23:58,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 11011 transitions. [2022-11-21 17:23:58,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 17:23:58,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:58,941 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:58,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-21 17:23:59,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:59,154 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:23:59,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:59,155 INFO L85 PathProgramCache]: Analyzing trace with hash -325058921, now seen corresponding path program 1 times [2022-11-21 17:23:59,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:23:59,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119738582] [2022-11-21 17:23:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:59,155 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:59,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:23:59,156 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:23:59,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-21 17:23:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:59,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:23:59,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:23:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-21 17:23:59,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:23:59,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:23:59,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119738582] [2022-11-21 17:23:59,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119738582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:59,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:59,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:23:59,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261065236] [2022-11-21 17:23:59,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:59,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:23:59,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:23:59,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:23:59,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:23:59,356 INFO L87 Difference]: Start difference. First operand 2436 states and 11011 transitions. Second operand has 3 states, 2 states have (on average 6.0) 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) [2022-11-21 17:23:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:59,657 INFO L93 Difference]: Finished difference Result 3012 states and 13363 transitions. [2022-11-21 17:23:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:23:59,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) 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 15 [2022-11-21 17:23:59,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:59,667 INFO L225 Difference]: With dead ends: 3012 [2022-11-21 17:23:59,667 INFO L226 Difference]: Without dead ends: 3012 [2022-11-21 17:23:59,667 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 [2022-11-21 17:23:59,668 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:59,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:23:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2022-11-21 17:23:59,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2294. [2022-11-21 17:23:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 2289 states have (on average 4.446483180428134) internal successors, (10178), 2293 states have internal predecessors, (10178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:23:59,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 10178 transitions. [2022-11-21 17:23:59,740 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 10178 transitions. Word has length 15 [2022-11-21 17:23:59,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:59,741 INFO L495 AbstractCegarLoop]: Abstraction has 2294 states and 10178 transitions. [2022-11-21 17:23:59,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) 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) [2022-11-21 17:23:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 10178 transitions. [2022-11-21 17:23:59,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 17:23:59,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:59,744 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2022-11-21 17:23:59,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-21 17:23:59,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:59,957 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:23:59,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:59,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2103609108, now seen corresponding path program 4 times [2022-11-21 17:23:59,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:23:59,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690990030] [2022-11-21 17:23:59,958 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:23:59,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:23:59,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:23:59,959 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:23:59,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-21 17:24:00,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:24:00,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:24:00,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 17:24:00,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:00,304 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:24:00,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:24:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:24:00,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:02,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:24:02,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690990030] [2022-11-21 17:24:02,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690990030] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:02,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:24:02,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2022-11-21 17:24:02,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721700122] [2022-11-21 17:24:02,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:02,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 17:24:02,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:24:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 17:24:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:24:02,790 INFO L87 Difference]: Start difference. First operand 2294 states and 10178 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:11,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:11,632 INFO L93 Difference]: Finished difference Result 5529 states and 23051 transitions. [2022-11-21 17:24:11,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 17:24:11,635 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-21 17:24:11,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:11,651 INFO L225 Difference]: With dead ends: 5529 [2022-11-21 17:24:11,651 INFO L226 Difference]: Without dead ends: 5513 [2022-11-21 17:24:11,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=213, Invalid=843, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 17:24:11,652 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1150 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:11,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 205 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-21 17:24:11,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5513 states. [2022-11-21 17:24:11,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5513 to 3117. [2022-11-21 17:24:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3117 states, 3111 states have (on average 4.478945676631308) internal successors, (13934), 3116 states have internal predecessors, (13934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 13934 transitions. [2022-11-21 17:24:11,755 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 13934 transitions. Word has length 16 [2022-11-21 17:24:11,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:11,756 INFO L495 AbstractCegarLoop]: Abstraction has 3117 states and 13934 transitions. [2022-11-21 17:24:11,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:11,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 13934 transitions. [2022-11-21 17:24:11,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 17:24:11,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:11,758 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1] [2022-11-21 17:24:11,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:11,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:24:11,959 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:24:11,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:11,960 INFO L85 PathProgramCache]: Analyzing trace with hash -433077228, now seen corresponding path program 5 times [2022-11-21 17:24:11,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:24:11,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384043309] [2022-11-21 17:24:11,960 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:24:11,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:24:11,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:24:11,961 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:24:11,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-21 17:24:12,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-21 17:24:12,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:24:12,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 17:24:12,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:12,355 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:24:12,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:24:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:13,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:16,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:24:16,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384043309] [2022-11-21 17:24:16,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384043309] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:16,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:24:16,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-21 17:24:16,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976452380] [2022-11-21 17:24:16,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:16,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:24:16,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:24:16,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:24:16,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:24:16,152 INFO L87 Difference]: Start difference. First operand 3117 states and 13934 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:30,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:24:39,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:25:05,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:05,049 INFO L93 Difference]: Finished difference Result 13362 states and 56670 transitions. [2022-11-21 17:25:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-21 17:25:05,052 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 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 [2022-11-21 17:25:05,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:05,099 INFO L225 Difference]: With dead ends: 13362 [2022-11-21 17:25:05,099 INFO L226 Difference]: Without dead ends: 13346 [2022-11-21 17:25:05,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=609, Invalid=2253, Unknown=0, NotChecked=0, Total=2862 [2022-11-21 17:25:05,101 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 1322 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 3299 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 3351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:05,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1322 Valid, 389 Invalid, 3351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 3299 Invalid, 0 Unknown, 0 Unchecked, 22.4s Time] [2022-11-21 17:25:05,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13346 states. [2022-11-21 17:25:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13346 to 4095. [2022-11-21 17:25:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4095 states, 4089 states have (on average 4.559550012227929) internal successors, (18644), 4094 states have internal predecessors, (18644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4095 states to 4095 states and 18644 transitions. [2022-11-21 17:25:05,301 INFO L78 Accepts]: Start accepts. Automaton has 4095 states and 18644 transitions. Word has length 17 [2022-11-21 17:25:05,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:05,301 INFO L495 AbstractCegarLoop]: Abstraction has 4095 states and 18644 transitions. [2022-11-21 17:25:05,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:25:05,302 INFO L276 IsEmpty]: Start isEmpty. Operand 4095 states and 18644 transitions. [2022-11-21 17:25:05,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-21 17:25:05,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:05,307 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1] [2022-11-21 17:25:05,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-21 17:25:05,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:25:05,521 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:25:05,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:05,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1760942316, now seen corresponding path program 6 times [2022-11-21 17:25:05,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:25:05,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247830776] [2022-11-21 17:25:05,522 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:25:05,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:25:05,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:25:05,528 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:25:05,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-21 17:25:05,860 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-21 17:25:05,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:25:05,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-21 17:25:05,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:25:06,070 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:25:06,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:25:06,754 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:25:06,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:25:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:25:10,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:25:10,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247830776] [2022-11-21 17:25:10,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247830776] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:25:10,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:25:10,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2022-11-21 17:25:10,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506291044] [2022-11-21 17:25:10,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:25:10,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-21 17:25:10,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:25:10,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-21 17:25:10,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2022-11-21 17:25:10,917 INFO L87 Difference]: Start difference. First operand 4095 states and 18644 transitions. Second operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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) [2022-11-21 17:25:22,001 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 [] [2022-11-21 17:25:25,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:25:30,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:25:33,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:26:06,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:06,031 INFO L93 Difference]: Finished difference Result 11487 states and 49767 transitions. [2022-11-21 17:26:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-21 17:26:06,035 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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 [2022-11-21 17:26:06,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:06,070 INFO L225 Difference]: With dead ends: 11487 [2022-11-21 17:26:06,070 INFO L226 Difference]: Without dead ends: 11487 [2022-11-21 17:26:06,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=768, Invalid=3788, Unknown=0, NotChecked=0, Total=4556 [2022-11-21 17:26:06,071 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 1852 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 5331 mSolverCounterSat, 100 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 5432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 5331 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:06,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1852 Valid, 708 Invalid, 5432 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 5331 Invalid, 1 Unknown, 0 Unchecked, 41.5s Time] [2022-11-21 17:26:06,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11487 states. [2022-11-21 17:26:06,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11487 to 5314. [2022-11-21 17:26:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5314 states, 5308 states have (on average 4.5634890730972115) internal successors, (24223), 5313 states have internal predecessors, (24223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5314 states to 5314 states and 24223 transitions. [2022-11-21 17:26:06,298 INFO L78 Accepts]: Start accepts. Automaton has 5314 states and 24223 transitions. Word has length 18 [2022-11-21 17:26:06,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:26:06,298 INFO L495 AbstractCegarLoop]: Abstraction has 5314 states and 24223 transitions. [2022-11-21 17:26:06,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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) [2022-11-21 17:26:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 5314 states and 24223 transitions. [2022-11-21 17:26:06,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 17:26:06,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:26:06,304 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:06,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-21 17:26:06,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:26:06,505 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:26:06,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:06,505 INFO L85 PathProgramCache]: Analyzing trace with hash 221437839, now seen corresponding path program 3 times [2022-11-21 17:26:06,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:26:06,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724471678] [2022-11-21 17:26:06,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:26:06,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:26:06,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:26:06,507 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:26:06,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-21 17:26:06,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 17:26:06,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:26:06,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 17:26:06,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:26:06,964 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:26:06,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:26:07,084 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 13 treesize of output 9 [2022-11-21 17:26:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 17:26:07,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:26:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 17:26:07,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:26:07,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724471678] [2022-11-21 17:26:07,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724471678] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:26:07,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:26:07,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-21 17:26:07,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133158183] [2022-11-21 17:26:07,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:26:07,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 17:26:07,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:26:07,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 17:26:07,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:26:07,942 INFO L87 Difference]: Start difference. First operand 5314 states and 24223 transitions. Second operand has 16 states, 16 states have (on average 1.5625) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:12,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:12,336 INFO L93 Difference]: Finished difference Result 5138 states and 23115 transitions. [2022-11-21 17:26:12,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:26:12,339 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 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 [2022-11-21 17:26:12,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:12,355 INFO L225 Difference]: With dead ends: 5138 [2022-11-21 17:26:12,355 INFO L226 Difference]: Without dead ends: 5138 [2022-11-21 17:26:12,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:26:12,356 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 448 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:12,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 59 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 17:26:12,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5138 states. [2022-11-21 17:26:12,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5138 to 5046. [2022-11-21 17:26:12,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5046 states, 5040 states have (on average 4.55218253968254) internal successors, (22943), 5045 states have internal predecessors, (22943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:12,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5046 states to 5046 states and 22943 transitions. [2022-11-21 17:26:12,540 INFO L78 Accepts]: Start accepts. Automaton has 5046 states and 22943 transitions. Word has length 19 [2022-11-21 17:26:12,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:26:12,541 INFO L495 AbstractCegarLoop]: Abstraction has 5046 states and 22943 transitions. [2022-11-21 17:26:12,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:12,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5046 states and 22943 transitions. [2022-11-21 17:26:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 17:26:12,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:26:12,552 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:12,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-21 17:26:12,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:26:12,768 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:26:12,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:12,768 INFO L85 PathProgramCache]: Analyzing trace with hash -251624817, now seen corresponding path program 4 times [2022-11-21 17:26:12,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:26:12,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105911711] [2022-11-21 17:26:12,769 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:26:12,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:26:12,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:26:12,770 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:26:12,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-21 17:26:12,967 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:26:12,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:26:12,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-21 17:26:12,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:26:13,120 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:26:13,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:26:13,661 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 17:26:13,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:26:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:26:16,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:26:16,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105911711] [2022-11-21 17:26:16,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105911711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:26:16,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:26:16,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 20 [2022-11-21 17:26:16,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747350171] [2022-11-21 17:26:16,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:26:16,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 17:26:16,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:26:16,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 17:26:16,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-21 17:26:16,378 INFO L87 Difference]: Start difference. First operand 5046 states and 22943 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:25,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:25,539 INFO L93 Difference]: Finished difference Result 6258 states and 27112 transitions. [2022-11-21 17:26:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 17:26:25,542 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-21 17:26:25,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:25,558 INFO L225 Difference]: With dead ends: 6258 [2022-11-21 17:26:25,559 INFO L226 Difference]: Without dead ends: 6130 [2022-11-21 17:26:25,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 17:26:25,559 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 855 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:25,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 247 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-21 17:26:25,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2022-11-21 17:26:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 5158. [2022-11-21 17:26:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 5152 states have (on average 4.527562111801243) internal successors, (23326), 5157 states have internal predecessors, (23326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 23326 transitions. [2022-11-21 17:26:25,694 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 23326 transitions. Word has length 20 [2022-11-21 17:26:25,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:26:25,694 INFO L495 AbstractCegarLoop]: Abstraction has 5158 states and 23326 transitions. [2022-11-21 17:26:25,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:25,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 23326 transitions. [2022-11-21 17:26:25,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 17:26:25,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:26:25,701 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:25,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-21 17:26:25,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:26:25,912 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:26:25,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:25,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2031665265, now seen corresponding path program 5 times [2022-11-21 17:26:25,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:26:25,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68325277] [2022-11-21 17:26:25,913 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:26:25,913 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:26:25,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:26:25,914 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:26:25,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-21 17:26:26,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-21 17:26:26,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:26:26,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 17:26:26,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:26:26,351 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:26:26,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:26:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:26:27,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:26:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:26:30,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:26:30,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68325277] [2022-11-21 17:26:30,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68325277] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:26:30,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:26:30,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2022-11-21 17:26:30,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113878789] [2022-11-21 17:26:30,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:26:30,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 17:26:30,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:26:30,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 17:26:30,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:26:30,515 INFO L87 Difference]: Start difference. First operand 5158 states and 23326 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:48,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:27:15,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:15,628 INFO L93 Difference]: Finished difference Result 16834 states and 72646 transitions. [2022-11-21 17:27:15,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-21 17:27:15,632 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-21 17:27:15,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:15,749 INFO L225 Difference]: With dead ends: 16834 [2022-11-21 17:27:15,749 INFO L226 Difference]: Without dead ends: 16674 [2022-11-21 17:27:15,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=752, Invalid=2908, Unknown=0, NotChecked=0, Total=3660 [2022-11-21 17:27:15,751 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1992 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3390 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 3448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:15,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1992 Valid, 415 Invalid, 3448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3390 Invalid, 0 Unknown, 0 Unchecked, 24.3s Time] [2022-11-21 17:27:15,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16674 states. [2022-11-21 17:27:15,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16674 to 5573. [2022-11-21 17:27:15,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5573 states, 5568 states have (on average 4.503591954022989) internal successors, (25076), 5572 states have internal predecessors, (25076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5573 states to 5573 states and 25076 transitions. [2022-11-21 17:27:15,963 INFO L78 Accepts]: Start accepts. Automaton has 5573 states and 25076 transitions. Word has length 21 [2022-11-21 17:27:15,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:15,963 INFO L495 AbstractCegarLoop]: Abstraction has 5573 states and 25076 transitions. [2022-11-21 17:27:15,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:15,963 INFO L276 IsEmpty]: Start isEmpty. Operand 5573 states and 25076 transitions. [2022-11-21 17:27:15,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 17:27:15,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:15,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:15,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-21 17:27:16,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:16,168 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:27:16,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:16,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1271264679, now seen corresponding path program 1 times [2022-11-21 17:27:16,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:27:16,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772128735] [2022-11-21 17:27:16,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:16,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:16,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:27:16,170 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:27:16,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-21 17:27:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:16,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:27:16,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:16,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:27:16,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:27:16,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772128735] [2022-11-21 17:27:16,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772128735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:27:16,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:27:16,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:27:16,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426387376] [2022-11-21 17:27:16,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:27:16,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:27:16,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:27:16,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:27:16,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:27:16,482 INFO L87 Difference]: Start difference. First operand 5573 states and 25076 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 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) [2022-11-21 17:27:16,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:16,764 INFO L93 Difference]: Finished difference Result 5982 states and 26391 transitions. [2022-11-21 17:27:16,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:27:16,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-21 17:27:16,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:16,783 INFO L225 Difference]: With dead ends: 5982 [2022-11-21 17:27:16,783 INFO L226 Difference]: Without dead ends: 5878 [2022-11-21 17:27:16,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:27:16,784 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:16,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:27:16,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2022-11-21 17:27:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 5622. [2022-11-21 17:27:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5622 states, 5617 states have (on average 4.501157201353036) internal successors, (25283), 5621 states have internal predecessors, (25283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:16,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5622 states to 5622 states and 25283 transitions. [2022-11-21 17:27:16,912 INFO L78 Accepts]: Start accepts. Automaton has 5622 states and 25283 transitions. Word has length 21 [2022-11-21 17:27:16,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:16,912 INFO L495 AbstractCegarLoop]: Abstraction has 5622 states and 25283 transitions. [2022-11-21 17:27:16,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 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) [2022-11-21 17:27:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 5622 states and 25283 transitions. [2022-11-21 17:27:16,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 17:27:16,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:16,918 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:16,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:17,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:17,119 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:27:17,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:17,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1694736271, now seen corresponding path program 6 times [2022-11-21 17:27:17,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:27:17,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755250487] [2022-11-21 17:27:17,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:27:17,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:17,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:27:17,121 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:27:17,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-21 17:27:17,660 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-21 17:27:17,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:27:17,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 17:27:17,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:17,822 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:27:17,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:27:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 17:27:18,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:27:20,848 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 17:27:20,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:27:20,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755250487] [2022-11-21 17:27:20,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755250487] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:27:20,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:27:20,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-21 17:27:20,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967567855] [2022-11-21 17:27:20,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:27:20,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:27:20,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:27:20,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:27:20,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:27:20,850 INFO L87 Difference]: Start difference. First operand 5622 states and 25283 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 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) [2022-11-21 17:27:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:34,206 INFO L93 Difference]: Finished difference Result 17144 states and 75621 transitions. [2022-11-21 17:27:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:27:34,210 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 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 23 [2022-11-21 17:27:34,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:34,267 INFO L225 Difference]: With dead ends: 17144 [2022-11-21 17:27:34,267 INFO L226 Difference]: Without dead ends: 17144 [2022-11-21 17:27:34,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2022-11-21 17:27:34,268 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1249 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:34,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 50 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-21 17:27:34,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17144 states. [2022-11-21 17:27:34,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17144 to 7787. [2022-11-21 17:27:34,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7787 states, 7782 states have (on average 4.679002827036752) internal successors, (36412), 7786 states have internal predecessors, (36412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7787 states to 7787 states and 36412 transitions. [2022-11-21 17:27:34,585 INFO L78 Accepts]: Start accepts. Automaton has 7787 states and 36412 transitions. Word has length 23 [2022-11-21 17:27:34,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:34,585 INFO L495 AbstractCegarLoop]: Abstraction has 7787 states and 36412 transitions. [2022-11-21 17:27:34,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 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) [2022-11-21 17:27:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7787 states and 36412 transitions. [2022-11-21 17:27:34,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:27:34,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:34,590 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1] [2022-11-21 17:27:34,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:34,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:34,791 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:27:34,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:34,791 INFO L85 PathProgramCache]: Analyzing trace with hash 86263215, now seen corresponding path program 4 times [2022-11-21 17:27:34,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:27:34,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44209855] [2022-11-21 17:27:34,792 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:27:34,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:34,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:27:34,793 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:27:34,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-21 17:27:35,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:27:35,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:27:35,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-21 17:27:35,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:35,178 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:27:35,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:27:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:36,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:27:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:49,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:27:49,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44209855] [2022-11-21 17:27:49,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44209855] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:27:49,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:27:49,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2022-11-21 17:27:49,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179936161] [2022-11-21 17:27:49,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:27:49,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-21 17:27:49,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:27:49,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-21 17:27:49,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-11-21 17:27:49,676 INFO L87 Difference]: Start difference. First operand 7787 states and 36412 transitions. Second operand has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:21,606 WARN L233 SmtUtils]: Spent 18.85s on a formula simplification that was a NOOP. DAG size: 254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:28:42,215 WARN L233 SmtUtils]: Spent 18.59s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:28:53,083 WARN L233 SmtUtils]: Spent 8.70s on a formula simplification that was a NOOP. DAG size: 232 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:29:08,082 WARN L233 SmtUtils]: Spent 12.80s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:29:23,793 WARN L233 SmtUtils]: Spent 13.49s on a formula simplification that was a NOOP. DAG size: 211 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:29:36,585 WARN L233 SmtUtils]: Spent 10.68s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:29:48,668 WARN L233 SmtUtils]: Spent 9.58s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:29:59,703 WARN L233 SmtUtils]: Spent 8.61s 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) [2022-11-21 17:30:08,706 WARN L233 SmtUtils]: Spent 6.43s 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) [2022-11-21 17:30:17,346 WARN L233 SmtUtils]: Spent 5.90s 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) [2022-11-21 17:30:25,887 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 146 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:31:27,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:27,029 INFO L93 Difference]: Finished difference Result 268177 states and 1290190 transitions. [2022-11-21 17:31:27,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-21 17:31:27,032 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:31:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:30,276 INFO L225 Difference]: With dead ends: 268177 [2022-11-21 17:31:30,277 INFO L226 Difference]: Without dead ends: 268177 [2022-11-21 17:31:30,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 173.2s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2022-11-21 17:31:30,280 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 14540 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 13042 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14540 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 13088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 13042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:30,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14540 Valid, 1515 Invalid, 13088 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 13042 Invalid, 0 Unknown, 0 Unchecked, 52.5s Time] [2022-11-21 17:31:30,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268177 states. [2022-11-21 17:31:34,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268177 to 7811. [2022-11-21 17:31:34,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7811 states, 7806 states have (on average 4.670766077376377) internal successors, (36460), 7810 states have internal predecessors, (36460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7811 states to 7811 states and 36460 transitions. [2022-11-21 17:31:34,447 INFO L78 Accepts]: Start accepts. Automaton has 7811 states and 36460 transitions. Word has length 24 [2022-11-21 17:31:34,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:34,448 INFO L495 AbstractCegarLoop]: Abstraction has 7811 states and 36460 transitions. [2022-11-21 17:31:34,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:34,448 INFO L276 IsEmpty]: Start isEmpty. Operand 7811 states and 36460 transitions. [2022-11-21 17:31:34,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:31:34,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:34,453 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:34,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-21 17:31:34,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:31:34,654 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:31:34,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1442611421, now seen corresponding path program 1 times [2022-11-21 17:31:34,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:31:34,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040087379] [2022-11-21 17:31:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:34,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:31:34,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:31:34,656 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:31:34,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-21 17:31:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:34,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 17:31:34,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:31:35,000 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:31:35,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:31:35,159 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 20 treesize of output 14 [2022-11-21 17:31:35,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:31:35,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:31:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:31:36,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:31:36,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040087379] [2022-11-21 17:31:36,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040087379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:31:36,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:31:36,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-21 17:31:36,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332649412] [2022-11-21 17:31:36,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:31:36,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 17:31:36,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:31:36,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 17:31:36,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:31:36,023 INFO L87 Difference]: Start difference. First operand 7811 states and 36460 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:37,732 INFO L93 Difference]: Finished difference Result 7997 states and 37034 transitions. [2022-11-21 17:31:37,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:31:37,734 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:31:37,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:37,761 INFO L225 Difference]: With dead ends: 7997 [2022-11-21 17:31:37,761 INFO L226 Difference]: Without dead ends: 7997 [2022-11-21 17:31:37,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:31:37,762 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 347 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:37,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 57 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 17:31:37,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7997 states. [2022-11-21 17:31:38,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7997 to 7753. [2022-11-21 17:31:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7753 states, 7748 states have (on average 4.675271037687145) internal successors, (36224), 7752 states have internal predecessors, (36224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7753 states to 7753 states and 36224 transitions. [2022-11-21 17:31:38,290 INFO L78 Accepts]: Start accepts. Automaton has 7753 states and 36224 transitions. Word has length 24 [2022-11-21 17:31:38,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:38,290 INFO L495 AbstractCegarLoop]: Abstraction has 7753 states and 36224 transitions. [2022-11-21 17:31:38,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:38,290 INFO L276 IsEmpty]: Start isEmpty. Operand 7753 states and 36224 transitions. [2022-11-21 17:31:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:31:38,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:38,297 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:38,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-21 17:31:38,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:31:38,510 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:31:38,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:38,510 INFO L85 PathProgramCache]: Analyzing trace with hash 565647842, now seen corresponding path program 1 times [2022-11-21 17:31:38,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:31:38,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522579554] [2022-11-21 17:31:38,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:31:38,511 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:31:38,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:31:38,511 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:31:38,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-21 17:31:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:31:38,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 17:31:38,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:31:38,870 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:31:38,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:31:38,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-21 17:31:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:39,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:31:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:31:40,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:31:40,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522579554] [2022-11-21 17:31:40,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522579554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:31:40,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:31:40,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2022-11-21 17:31:40,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919960098] [2022-11-21 17:31:40,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:31:40,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:31:40,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:31:40,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:31:40,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:31:40,133 INFO L87 Difference]: Start difference. First operand 7753 states and 36224 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:44,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:44,548 INFO L93 Difference]: Finished difference Result 8241 states and 37571 transitions. [2022-11-21 17:31:44,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 17:31:44,550 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:31:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:44,576 INFO L225 Difference]: With dead ends: 8241 [2022-11-21 17:31:44,576 INFO L226 Difference]: Without dead ends: 8241 [2022-11-21 17:31:44,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2022-11-21 17:31:44,577 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 306 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:44,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 60 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-21 17:31:44,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8241 states. [2022-11-21 17:31:45,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8241 to 8013. [2022-11-21 17:31:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8013 states, 8008 states have (on average 4.615384615384615) internal successors, (36960), 8012 states have internal predecessors, (36960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8013 states to 8013 states and 36960 transitions. [2022-11-21 17:31:45,067 INFO L78 Accepts]: Start accepts. Automaton has 8013 states and 36960 transitions. Word has length 24 [2022-11-21 17:31:45,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:45,067 INFO L495 AbstractCegarLoop]: Abstraction has 8013 states and 36960 transitions. [2022-11-21 17:31:45,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:45,067 INFO L276 IsEmpty]: Start isEmpty. Operand 8013 states and 36960 transitions. [2022-11-21 17:31:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:31:45,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:45,072 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:45,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-21 17:31:45,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:31:45,273 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:31:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:45,273 INFO L85 PathProgramCache]: Analyzing trace with hash 34384086, now seen corresponding path program 2 times [2022-11-21 17:31:45,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:31:45,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588303590] [2022-11-21 17:31:45,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:31:45,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:31:45,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:31:45,275 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:31:45,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-21 17:31:45,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:31:45,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:31:45,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:31:45,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:31:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:31:45,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:31:46,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:31:46,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:31:46,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588303590] [2022-11-21 17:31:46,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588303590] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 17:31:46,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:31:46,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2022-11-21 17:31:46,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292669966] [2022-11-21 17:31:46,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:46,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:31:46,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:31:46,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:31:46,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:31:46,259 INFO L87 Difference]: Start difference. First operand 8013 states and 36960 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:48,417 INFO L93 Difference]: Finished difference Result 11485 states and 50689 transitions. [2022-11-21 17:31:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:31:48,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:31:48,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:48,456 INFO L225 Difference]: With dead ends: 11485 [2022-11-21 17:31:48,456 INFO L226 Difference]: Without dead ends: 11485 [2022-11-21 17:31:48,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:31:48,457 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 100 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:48,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 19 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 17:31:48,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11485 states. [2022-11-21 17:31:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11485 to 8269. [2022-11-21 17:31:48,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8269 states, 8264 states have (on average 4.63189738625363) internal successors, (38278), 8268 states have internal predecessors, (38278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8269 states to 8269 states and 38278 transitions. [2022-11-21 17:31:48,670 INFO L78 Accepts]: Start accepts. Automaton has 8269 states and 38278 transitions. Word has length 24 [2022-11-21 17:31:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:48,670 INFO L495 AbstractCegarLoop]: Abstraction has 8269 states and 38278 transitions. [2022-11-21 17:31:48,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:48,671 INFO L276 IsEmpty]: Start isEmpty. Operand 8269 states and 38278 transitions. [2022-11-21 17:31:48,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:31:48,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:48,677 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:48,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-21 17:31:48,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:31:48,878 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:31:48,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:48,878 INFO L85 PathProgramCache]: Analyzing trace with hash 779086584, now seen corresponding path program 3 times [2022-11-21 17:31:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:31:48,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35429245] [2022-11-21 17:31:48,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:31:48,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:31:48,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:31:48,879 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:31:48,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-21 17:31:49,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 17:31:49,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:31:49,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:31:49,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:31:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:31:49,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:31:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:31:50,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:31:50,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35429245] [2022-11-21 17:31:50,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35429245] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 17:31:50,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:31:50,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2022-11-21 17:31:50,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451928838] [2022-11-21 17:31:50,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:31:50,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:31:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:31:50,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:31:50,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:31:50,042 INFO L87 Difference]: Start difference. First operand 8269 states and 38278 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:51,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:51,567 INFO L93 Difference]: Finished difference Result 8891 states and 40474 transitions. [2022-11-21 17:31:51,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:31:51,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:31:51,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:51,605 INFO L225 Difference]: With dead ends: 8891 [2022-11-21 17:31:51,605 INFO L226 Difference]: Without dead ends: 8891 [2022-11-21 17:31:51,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:31:51,605 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 100 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:51,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 13 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 17:31:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8891 states. [2022-11-21 17:31:51,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8891 to 8357. [2022-11-21 17:31:51,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8357 states, 8352 states have (on average 4.613984674329502) internal successors, (38536), 8356 states have internal predecessors, (38536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8357 states to 8357 states and 38536 transitions. [2022-11-21 17:31:51,898 INFO L78 Accepts]: Start accepts. Automaton has 8357 states and 38536 transitions. Word has length 24 [2022-11-21 17:31:51,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:51,898 INFO L495 AbstractCegarLoop]: Abstraction has 8357 states and 38536 transitions. [2022-11-21 17:31:51,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:51,898 INFO L276 IsEmpty]: Start isEmpty. Operand 8357 states and 38536 transitions. [2022-11-21 17:31:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:31:51,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:51,906 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:51,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-21 17:31:52,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:31:52,107 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:31:52,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:52,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1502669936, now seen corresponding path program 4 times [2022-11-21 17:31:52,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:31:52,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220382288] [2022-11-21 17:31:52,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:31:52,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:31:52,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:31:52,109 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:31:52,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-21 17:31:52,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:31:52,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:31:52,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 17:31:52,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:31:52,487 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:31:52,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:31:52,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-21 17:31:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:53,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:31:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:31:53,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:31:53,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220382288] [2022-11-21 17:31:53,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220382288] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:31:53,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:31:53,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2022-11-21 17:31:53,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81972633] [2022-11-21 17:31:53,828 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:31:53,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:31:53,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:31:53,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:31:53,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:31:53,829 INFO L87 Difference]: Start difference. First operand 8357 states and 38536 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:00,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:00,441 INFO L93 Difference]: Finished difference Result 12369 states and 57512 transitions. [2022-11-21 17:32:00,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 17:32:00,442 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:32:00,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:00,486 INFO L225 Difference]: With dead ends: 12369 [2022-11-21 17:32:00,486 INFO L226 Difference]: Without dead ends: 12369 [2022-11-21 17:32:00,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=514, Invalid=1292, Unknown=0, NotChecked=0, Total=1806 [2022-11-21 17:32:00,487 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 355 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:00,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 98 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 17:32:00,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12369 states. [2022-11-21 17:32:00,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12369 to 8581. [2022-11-21 17:32:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8581 states, 8576 states have (on average 4.591884328358209) internal successors, (39380), 8580 states have internal predecessors, (39380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:00,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8581 states to 8581 states and 39380 transitions. [2022-11-21 17:32:00,708 INFO L78 Accepts]: Start accepts. Automaton has 8581 states and 39380 transitions. Word has length 24 [2022-11-21 17:32:00,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:00,709 INFO L495 AbstractCegarLoop]: Abstraction has 8581 states and 39380 transitions. [2022-11-21 17:32:00,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 8581 states and 39380 transitions. [2022-11-21 17:32:00,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:32:00,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:00,715 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:32:00,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-21 17:32:00,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:00,916 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:32:00,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:00,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1765408418, now seen corresponding path program 5 times [2022-11-21 17:32:00,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:32:00,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776499399] [2022-11-21 17:32:00,917 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:32:00,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:00,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:32:00,918 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:32:00,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-21 17:32:01,132 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:32:01,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:32:01,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 17:32:01,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:32:01,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:32:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:32:02,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:32:02,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776499399] [2022-11-21 17:32:02,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776499399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:32:02,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:32:02,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2022-11-21 17:32:02,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368044639] [2022-11-21 17:32:02,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:32:02,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:32:02,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:32:02,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:32:02,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:32:02,196 INFO L87 Difference]: Start difference. First operand 8581 states and 39380 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:07,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:07,965 INFO L93 Difference]: Finished difference Result 16861 states and 75286 transitions. [2022-11-21 17:32:07,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 17:32:07,966 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:32:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:08,030 INFO L225 Difference]: With dead ends: 16861 [2022-11-21 17:32:08,030 INFO L226 Difference]: Without dead ends: 16861 [2022-11-21 17:32:08,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=444, Invalid=1116, Unknown=0, NotChecked=0, Total=1560 [2022-11-21 17:32:08,031 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 262 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:08,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 78 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-21 17:32:08,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16861 states. [2022-11-21 17:32:08,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16861 to 8685. [2022-11-21 17:32:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8685 states, 8680 states have (on average 4.607142857142857) internal successors, (39990), 8684 states have internal predecessors, (39990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8685 states to 8685 states and 39990 transitions. [2022-11-21 17:32:08,297 INFO L78 Accepts]: Start accepts. Automaton has 8685 states and 39990 transitions. Word has length 24 [2022-11-21 17:32:08,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:08,297 INFO L495 AbstractCegarLoop]: Abstraction has 8685 states and 39990 transitions. [2022-11-21 17:32:08,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 8685 states and 39990 transitions. [2022-11-21 17:32:08,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:32:08,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:08,304 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:32:08,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-11-21 17:32:08,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:08,505 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:32:08,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:08,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1784856380, now seen corresponding path program 6 times [2022-11-21 17:32:08,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:32:08,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333987936] [2022-11-21 17:32:08,505 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:32:08,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:08,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:32:08,506 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:32:08,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-21 17:32:08,739 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-21 17:32:08,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:32:08,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:32:08,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:32:09,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:32:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:32:09,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:32:09,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333987936] [2022-11-21 17:32:09,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333987936] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 17:32:09,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:32:09,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2022-11-21 17:32:09,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359370307] [2022-11-21 17:32:09,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:09,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:32:09,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:32:09,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:32:09,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:32:09,483 INFO L87 Difference]: Start difference. First operand 8685 states and 39990 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:11,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:11,451 INFO L93 Difference]: Finished difference Result 12627 states and 58632 transitions. [2022-11-21 17:32:11,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:32:11,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:32:11,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:11,495 INFO L225 Difference]: With dead ends: 12627 [2022-11-21 17:32:11,495 INFO L226 Difference]: Without dead ends: 12627 [2022-11-21 17:32:11,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:32:11,496 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 84 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:11,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 19 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 17:32:11,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12627 states. [2022-11-21 17:32:11,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12627 to 8773. [2022-11-21 17:32:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8773 states, 8768 states have (on average 4.610401459854015) internal successors, (40424), 8772 states have internal predecessors, (40424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8773 states to 8773 states and 40424 transitions. [2022-11-21 17:32:11,819 INFO L78 Accepts]: Start accepts. Automaton has 8773 states and 40424 transitions. Word has length 24 [2022-11-21 17:32:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:11,819 INFO L495 AbstractCegarLoop]: Abstraction has 8773 states and 40424 transitions. [2022-11-21 17:32:11,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 8773 states and 40424 transitions. [2022-11-21 17:32:11,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:32:11,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:11,829 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:32:11,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-21 17:32:12,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:12,035 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:32:12,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:12,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1147513444, now seen corresponding path program 7 times [2022-11-21 17:32:12,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:32:12,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479273830] [2022-11-21 17:32:12,036 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:32:12,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:12,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:32:12,038 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:32:12,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-21 17:32:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:12,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-21 17:32:12,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:12,491 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:32:12,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:32:12,600 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 13 treesize of output 9 [2022-11-21 17:32:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:32:13,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:32:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:32:14,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:32:14,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479273830] [2022-11-21 17:32:14,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479273830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:32:14,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:32:14,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-21 17:32:14,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044766826] [2022-11-21 17:32:14,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:32:14,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 17:32:14,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:32:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 17:32:14,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-21 17:32:14,507 INFO L87 Difference]: Start difference. First operand 8773 states and 40424 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:22,081 INFO L93 Difference]: Finished difference Result 13923 states and 61485 transitions. [2022-11-21 17:32:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-21 17:32:22,083 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:32:22,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:22,130 INFO L225 Difference]: With dead ends: 13923 [2022-11-21 17:32:22,130 INFO L226 Difference]: Without dead ends: 13923 [2022-11-21 17:32:22,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=571, Invalid=1235, Unknown=0, NotChecked=0, Total=1806 [2022-11-21 17:32:22,131 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 470 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:22,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 49 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-21 17:32:22,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13923 states. [2022-11-21 17:32:22,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13923 to 8773. [2022-11-21 17:32:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8773 states, 8768 states have (on average 4.610401459854015) internal successors, (40424), 8772 states have internal predecessors, (40424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8773 states to 8773 states and 40424 transitions. [2022-11-21 17:32:22,453 INFO L78 Accepts]: Start accepts. Automaton has 8773 states and 40424 transitions. Word has length 24 [2022-11-21 17:32:22,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:22,453 INFO L495 AbstractCegarLoop]: Abstraction has 8773 states and 40424 transitions. [2022-11-21 17:32:22,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:22,454 INFO L276 IsEmpty]: Start isEmpty. Operand 8773 states and 40424 transitions. [2022-11-21 17:32:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:32:22,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:22,462 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:32:22,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-11-21 17:32:22,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:22,663 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:32:22,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:22,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1892215942, now seen corresponding path program 8 times [2022-11-21 17:32:22,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:32:22,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938309363] [2022-11-21 17:32:22,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:32:22,664 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:22,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:32:22,665 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:32:22,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-21 17:32:22,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:32:22,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:32:22,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:32:22,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:32:23,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:32:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:32:23,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:32:23,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938309363] [2022-11-21 17:32:23,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938309363] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 17:32:23,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:32:23,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2022-11-21 17:32:23,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127665224] [2022-11-21 17:32:23,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:23,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:32:23,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:32:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:32:23,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:32:23,824 INFO L87 Difference]: Start difference. First operand 8773 states and 40424 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:25,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:25,672 INFO L93 Difference]: Finished difference Result 10741 states and 47874 transitions. [2022-11-21 17:32:25,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:32:25,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:32:25,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:25,706 INFO L225 Difference]: With dead ends: 10741 [2022-11-21 17:32:25,706 INFO L226 Difference]: Without dead ends: 10741 [2022-11-21 17:32:25,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:32:25,707 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 121 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:25,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 8 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 17:32:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10741 states. [2022-11-21 17:32:25,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10741 to 8789. [2022-11-21 17:32:25,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8789 states, 8784 states have (on average 4.609744990892532) internal successors, (40492), 8788 states have internal predecessors, (40492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8789 states to 8789 states and 40492 transitions. [2022-11-21 17:32:26,053 INFO L78 Accepts]: Start accepts. Automaton has 8789 states and 40492 transitions. Word has length 24 [2022-11-21 17:32:26,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:26,053 INFO L495 AbstractCegarLoop]: Abstraction has 8789 states and 40492 transitions. [2022-11-21 17:32:26,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:26,053 INFO L276 IsEmpty]: Start isEmpty. Operand 8789 states and 40492 transitions. [2022-11-21 17:32:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:32:26,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:26,061 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:32:26,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Ended with exit code 0 [2022-11-21 17:32:26,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:26,261 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:32:26,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:26,262 INFO L85 PathProgramCache]: Analyzing trace with hash -836845968, now seen corresponding path program 9 times [2022-11-21 17:32:26,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:32:26,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509641616] [2022-11-21 17:32:26,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:32:26,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:26,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:32:26,263 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:32:26,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-21 17:32:26,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 17:32:26,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:32:26,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:32:26,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:32:26,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:32:26,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:32:26,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509641616] [2022-11-21 17:32:26,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509641616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:32:26,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:32:26,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:32:26,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033640617] [2022-11-21 17:32:26,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:26,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:32:26,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:32:26,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:32:26,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:32:26,903 INFO L87 Difference]: Start difference. First operand 8789 states and 40492 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:27,961 INFO L93 Difference]: Finished difference Result 9109 states and 41548 transitions. [2022-11-21 17:32:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:32:27,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:32:27,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:27,991 INFO L225 Difference]: With dead ends: 9109 [2022-11-21 17:32:27,991 INFO L226 Difference]: Without dead ends: 9101 [2022-11-21 17:32:27,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:32:27,992 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 92 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:27,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 6 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 17:32:28,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9101 states. [2022-11-21 17:32:28,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9101 to 8805. [2022-11-21 17:32:28,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8805 states, 8800 states have (on average 4.608636363636363) internal successors, (40556), 8804 states have internal predecessors, (40556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8805 states to 8805 states and 40556 transitions. [2022-11-21 17:32:28,201 INFO L78 Accepts]: Start accepts. Automaton has 8805 states and 40556 transitions. Word has length 24 [2022-11-21 17:32:28,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:28,201 INFO L495 AbstractCegarLoop]: Abstraction has 8805 states and 40556 transitions. [2022-11-21 17:32:28,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:28,201 INFO L276 IsEmpty]: Start isEmpty. Operand 8805 states and 40556 transitions. [2022-11-21 17:32:28,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:32:28,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:28,209 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:32:28,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2022-11-21 17:32:28,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:28,409 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:32:28,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:28,410 INFO L85 PathProgramCache]: Analyzing trace with hash -807212166, now seen corresponding path program 10 times [2022-11-21 17:32:28,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:32:28,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713823560] [2022-11-21 17:32:28,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:32:28,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:28,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:32:28,411 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:32:28,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-21 17:32:28,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:32:28,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:32:28,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 17:32:28,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:28,787 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:32:28,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:32:28,883 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 13 treesize of output 9 [2022-11-21 17:32:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:32:29,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:32:30,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:32:30,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:32:30,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713823560] [2022-11-21 17:32:30,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713823560] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:32:30,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:32:30,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2022-11-21 17:32:30,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587078548] [2022-11-21 17:32:30,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:32:30,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:32:30,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:32:30,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:32:30,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:32:30,468 INFO L87 Difference]: Start difference. First operand 8805 states and 40556 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:37,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:37,199 INFO L93 Difference]: Finished difference Result 11625 states and 52294 transitions. [2022-11-21 17:32:37,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 17:32:37,201 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:32:37,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:37,241 INFO L225 Difference]: With dead ends: 11625 [2022-11-21 17:32:37,241 INFO L226 Difference]: Without dead ends: 11625 [2022-11-21 17:32:37,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=414, Invalid=1068, Unknown=0, NotChecked=0, Total=1482 [2022-11-21 17:32:37,242 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 324 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:37,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 38 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-21 17:32:37,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11625 states. [2022-11-21 17:32:37,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11625 to 8825. [2022-11-21 17:32:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8825 states, 8820 states have (on average 4.6079365079365076) internal successors, (40642), 8824 states have internal predecessors, (40642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8825 states to 8825 states and 40642 transitions. [2022-11-21 17:32:37,464 INFO L78 Accepts]: Start accepts. Automaton has 8825 states and 40642 transitions. Word has length 24 [2022-11-21 17:32:37,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:37,464 INFO L495 AbstractCegarLoop]: Abstraction has 8825 states and 40642 transitions. [2022-11-21 17:32:37,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:37,464 INFO L276 IsEmpty]: Start isEmpty. Operand 8825 states and 40642 transitions. [2022-11-21 17:32:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:32:37,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:37,471 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:32:37,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-21 17:32:37,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:37,671 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:32:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1825101486, now seen corresponding path program 11 times [2022-11-21 17:32:37,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:32:37,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319967377] [2022-11-21 17:32:37,672 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:32:37,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:37,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:32:37,673 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:32:37,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-21 17:32:37,894 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:32:37,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:32:37,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 17:32:37,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:32:38,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:32:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:32:39,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:32:39,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319967377] [2022-11-21 17:32:39,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319967377] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:32:39,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:32:39,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2022-11-21 17:32:39,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892868243] [2022-11-21 17:32:39,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:32:39,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:32:39,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:32:39,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:32:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:32:39,376 INFO L87 Difference]: Start difference. First operand 8825 states and 40642 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:46,217 INFO L93 Difference]: Finished difference Result 11985 states and 53746 transitions. [2022-11-21 17:32:46,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-21 17:32:46,218 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:32:46,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:46,256 INFO L225 Difference]: With dead ends: 11985 [2022-11-21 17:32:46,256 INFO L226 Difference]: Without dead ends: 11985 [2022-11-21 17:32:46,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=453, Invalid=1107, Unknown=0, NotChecked=0, Total=1560 [2022-11-21 17:32:46,257 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 354 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:46,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 37 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-21 17:32:46,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11985 states. [2022-11-21 17:32:46,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11985 to 8847. [2022-11-21 17:32:46,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8847 states, 8842 states have (on average 4.605519113322778) internal successors, (40722), 8846 states have internal predecessors, (40722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 40722 transitions. [2022-11-21 17:32:46,480 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 40722 transitions. Word has length 24 [2022-11-21 17:32:46,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:46,480 INFO L495 AbstractCegarLoop]: Abstraction has 8847 states and 40722 transitions. [2022-11-21 17:32:46,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:46,480 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 40722 transitions. [2022-11-21 17:32:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:32:46,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:46,488 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:32:46,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-21 17:32:46,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:46,688 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:32:46,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:46,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2138190718, now seen corresponding path program 12 times [2022-11-21 17:32:46,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:32:46,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999321387] [2022-11-21 17:32:46,690 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:32:46,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:46,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:32:46,691 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:32:46,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-21 17:32:46,933 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-21 17:32:46,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:32:46,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:32:46,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:32:47,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:32:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:32:47,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:32:47,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999321387] [2022-11-21 17:32:47,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999321387] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 17:32:47,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:32:47,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2022-11-21 17:32:47,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912400261] [2022-11-21 17:32:47,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:47,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:32:47,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:32:47,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:32:47,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:32:47,797 INFO L87 Difference]: Start difference. First operand 8847 states and 40722 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:50,764 INFO L93 Difference]: Finished difference Result 15353 states and 69436 transitions. [2022-11-21 17:32:50,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 17:32:50,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:32:50,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:50,821 INFO L225 Difference]: With dead ends: 15353 [2022-11-21 17:32:50,821 INFO L226 Difference]: Without dead ends: 15353 [2022-11-21 17:32:50,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-11-21 17:32:50,821 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 100 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:50,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 18 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 17:32:50,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15353 states. [2022-11-21 17:32:51,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15353 to 8855. [2022-11-21 17:32:51,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8855 states, 8850 states have (on average 4.605423728813559) internal successors, (40758), 8854 states have internal predecessors, (40758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8855 states to 8855 states and 40758 transitions. [2022-11-21 17:32:51,161 INFO L78 Accepts]: Start accepts. Automaton has 8855 states and 40758 transitions. Word has length 24 [2022-11-21 17:32:51,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:51,161 INFO L495 AbstractCegarLoop]: Abstraction has 8855 states and 40758 transitions. [2022-11-21 17:32:51,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:51,161 INFO L276 IsEmpty]: Start isEmpty. Operand 8855 states and 40758 transitions. [2022-11-21 17:32:51,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:32:51,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:51,168 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:32:51,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Ended with exit code 0 [2022-11-21 17:32:51,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:51,369 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:32:51,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:51,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1563294428, now seen corresponding path program 13 times [2022-11-21 17:32:51,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:32:51,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441075043] [2022-11-21 17:32:51,370 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:32:51,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:51,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:32:51,371 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:32:51,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-21 17:32:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:51,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 17:32:51,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:51,739 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:32:51,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:32:51,856 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 13 treesize of output 9 [2022-11-21 17:32:52,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:32:52,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:32:52,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:32:52,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:32:52,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441075043] [2022-11-21 17:32:52,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441075043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:32:52,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:32:52,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-21 17:32:52,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566973702] [2022-11-21 17:32:52,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:32:52,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 17:32:52,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:32:52,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 17:32:52,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:32:52,961 INFO L87 Difference]: Start difference. First operand 8855 states and 40758 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:58,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:32:58,038 INFO L93 Difference]: Finished difference Result 13029 states and 60274 transitions. [2022-11-21 17:32:58,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 17:32:58,040 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:32:58,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:32:58,092 INFO L225 Difference]: With dead ends: 13029 [2022-11-21 17:32:58,092 INFO L226 Difference]: Without dead ends: 13029 [2022-11-21 17:32:58,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=249, Invalid=563, Unknown=0, NotChecked=0, Total=812 [2022-11-21 17:32:58,092 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 287 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:32:58,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 55 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-21 17:32:58,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13029 states. [2022-11-21 17:32:58,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13029 to 8773. [2022-11-21 17:32:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8773 states, 8768 states have (on average 4.603216240875913) internal successors, (40361), 8772 states have internal predecessors, (40361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8773 states to 8773 states and 40361 transitions. [2022-11-21 17:32:58,473 INFO L78 Accepts]: Start accepts. Automaton has 8773 states and 40361 transitions. Word has length 24 [2022-11-21 17:32:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:32:58,473 INFO L495 AbstractCegarLoop]: Abstraction has 8773 states and 40361 transitions. [2022-11-21 17:32:58,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:32:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand 8773 states and 40361 transitions. [2022-11-21 17:32:58,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:32:58,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:32:58,484 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:32:58,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-11-21 17:32:58,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:58,685 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:32:58,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:58,685 INFO L85 PathProgramCache]: Analyzing trace with hash 631491576, now seen corresponding path program 14 times [2022-11-21 17:32:58,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:32:58,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329651582] [2022-11-21 17:32:58,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:32:58,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:32:58,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:32:58,686 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:32:58,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-21 17:32:58,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:32:58,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:32:58,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:32:58,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:32:59,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:32:59,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:32:59,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:32:59,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329651582] [2022-11-21 17:32:59,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329651582] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 17:32:59,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:32:59,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2022-11-21 17:32:59,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332876810] [2022-11-21 17:32:59,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:32:59,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:32:59,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:32:59,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:32:59,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:32:59,807 INFO L87 Difference]: Start difference. First operand 8773 states and 40361 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:33:01,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:33:01,532 INFO L93 Difference]: Finished difference Result 10511 states and 46954 transitions. [2022-11-21 17:33:01,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:33:01,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:33:01,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:33:01,567 INFO L225 Difference]: With dead ends: 10511 [2022-11-21 17:33:01,567 INFO L226 Difference]: Without dead ends: 10511 [2022-11-21 17:33:01,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:33:01,568 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 94 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:33:01,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 11 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 17:33:01,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10511 states. [2022-11-21 17:33:01,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10511 to 8611. [2022-11-21 17:33:01,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8611 states, 8606 states have (on average 4.60062746920753) internal successors, (39593), 8610 states have internal predecessors, (39593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:33:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8611 states to 8611 states and 39593 transitions. [2022-11-21 17:33:01,771 INFO L78 Accepts]: Start accepts. Automaton has 8611 states and 39593 transitions. Word has length 24 [2022-11-21 17:33:01,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:33:01,771 INFO L495 AbstractCegarLoop]: Abstraction has 8611 states and 39593 transitions. [2022-11-21 17:33:01,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:33:01,772 INFO L276 IsEmpty]: Start isEmpty. Operand 8611 states and 39593 transitions. [2022-11-21 17:33:01,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:33:01,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:33:01,778 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:33:01,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Ended with exit code 0 [2022-11-21 17:33:01,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:33:01,978 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:33:01,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:33:01,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2097570334, now seen corresponding path program 15 times [2022-11-21 17:33:01,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:33:01,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48617743] [2022-11-21 17:33:01,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:33:01,979 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:33:01,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:33:01,980 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:33:01,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-21 17:33:02,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 17:33:02,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:33:02,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:33:02,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:33:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:33:02,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:33:02,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:33:02,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48617743] [2022-11-21 17:33:02,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48617743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:33:02,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:33:02,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:33:02,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465780154] [2022-11-21 17:33:02,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:33:02,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:33:02,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:33:02,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:33:02,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:33:02,607 INFO L87 Difference]: Start difference. First operand 8611 states and 39593 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:33:03,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:33:03,975 INFO L93 Difference]: Finished difference Result 9149 states and 41324 transitions. [2022-11-21 17:33:03,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:33:03,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:33:03,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:33:04,009 INFO L225 Difference]: With dead ends: 9149 [2022-11-21 17:33:04,009 INFO L226 Difference]: Without dead ends: 9141 [2022-11-21 17:33:04,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:33:04,010 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 106 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:33:04,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 5 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 17:33:04,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9141 states. [2022-11-21 17:33:04,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9141 to 8611. [2022-11-21 17:33:04,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8611 states, 8606 states have (on average 4.600395073204741) internal successors, (39591), 8610 states have internal predecessors, (39591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:33:04,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8611 states to 8611 states and 39591 transitions. [2022-11-21 17:33:04,249 INFO L78 Accepts]: Start accepts. Automaton has 8611 states and 39591 transitions. Word has length 24 [2022-11-21 17:33:04,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:33:04,249 INFO L495 AbstractCegarLoop]: Abstraction has 8611 states and 39591 transitions. [2022-11-21 17:33:04,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:33:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand 8611 states and 39591 transitions. [2022-11-21 17:33:04,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:33:04,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:33:04,256 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:33:04,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-21 17:33:04,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:33:04,457 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:33:04,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:33:04,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2067936532, now seen corresponding path program 16 times [2022-11-21 17:33:04,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:33:04,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32526533] [2022-11-21 17:33:04,458 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:33:04,458 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 [2022-11-21 17:33:04,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:33:04,460 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:33:04,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-21 17:33:04,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:33:04,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:33:04,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 17:33:04,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:33:04,836 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-21 17:33:04,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-21 17:33:04,930 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 13 treesize of output 9 [2022-11-21 17:33:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:33:05,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:33:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:33:06,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:33:06,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32526533] [2022-11-21 17:33:06,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32526533] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:33:06,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:33:06,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2022-11-21 17:33:06,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015559176] [2022-11-21 17:33:06,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:33:06,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:33:06,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:33:06,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:33:06,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:33:06,491 INFO L87 Difference]: Start difference. First operand 8611 states and 39591 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:33:14,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:33:14,750 INFO L93 Difference]: Finished difference Result 11707 states and 52032 transitions. [2022-11-21 17:33:14,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 17:33:14,752 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:33:14,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:33:14,787 INFO L225 Difference]: With dead ends: 11707 [2022-11-21 17:33:14,787 INFO L226 Difference]: Without dead ends: 11707 [2022-11-21 17:33:14,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=461, Invalid=1179, Unknown=0, NotChecked=0, Total=1640 [2022-11-21 17:33:14,788 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 306 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:33:14,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 35 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-21 17:33:14,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11707 states. [2022-11-21 17:33:14,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11707 to 8615. [2022-11-21 17:33:14,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8615 states, 8610 states have (on average 4.601277584204413) internal successors, (39617), 8614 states have internal predecessors, (39617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:33:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8615 states to 8615 states and 39617 transitions. [2022-11-21 17:33:15,008 INFO L78 Accepts]: Start accepts. Automaton has 8615 states and 39617 transitions. Word has length 24 [2022-11-21 17:33:15,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:33:15,009 INFO L495 AbstractCegarLoop]: Abstraction has 8615 states and 39617 transitions. [2022-11-21 17:33:15,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:33:15,009 INFO L276 IsEmpty]: Start isEmpty. Operand 8615 states and 39617 transitions. [2022-11-21 17:33:15,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 17:33:15,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:33:15,015 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:33:15,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-21 17:33:15,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:33:15,216 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:33:15,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:33:15,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1209141444, now seen corresponding path program 17 times [2022-11-21 17:33:15,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:33:15,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251904876] [2022-11-21 17:33:15,217 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:33:15,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:33:15,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:33:15,218 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:33:15,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-21 17:33:15,451 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:33:15,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:33:15,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 17:33:15,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:33:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:33:16,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:33:16,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:33:16,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:33:16,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251904876] [2022-11-21 17:33:16,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251904876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:33:16,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:33:16,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2022-11-21 17:33:16,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563860518] [2022-11-21 17:33:16,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:33:16,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 17:33:16,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:33:16,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 17:33:16,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:33:16,943 INFO L87 Difference]: Start difference. First operand 8615 states and 39617 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:33:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:33:25,582 INFO L93 Difference]: Finished difference Result 12133 states and 53599 transitions. [2022-11-21 17:33:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 17:33:25,584 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-21 17:33:25,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:33:25,623 INFO L225 Difference]: With dead ends: 12133 [2022-11-21 17:33:25,623 INFO L226 Difference]: Without dead ends: 12133 [2022-11-21 17:33:25,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=500, Invalid=1222, Unknown=0, NotChecked=0, Total=1722 [2022-11-21 17:33:25,624 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 315 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:33:25,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 49 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1549 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-21 17:33:25,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12133 states. [2022-11-21 17:33:25,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12133 to 8553. [2022-11-21 17:33:25,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8553 states, 8548 states have (on average 4.603416003743566) internal successors, (39350), 8552 states have internal predecessors, (39350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:33:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8553 states to 8553 states and 39350 transitions. [2022-11-21 17:33:25,977 INFO L78 Accepts]: Start accepts. Automaton has 8553 states and 39350 transitions. Word has length 24 [2022-11-21 17:33:25,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:33:25,977 INFO L495 AbstractCegarLoop]: Abstraction has 8553 states and 39350 transitions. [2022-11-21 17:33:25,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:33:25,977 INFO L276 IsEmpty]: Start isEmpty. Operand 8553 states and 39350 transitions. [2022-11-21 17:33:25,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 17:33:25,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:33:25,984 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:33:25,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Ended with exit code 0 [2022-11-21 17:33:26,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:33:26,184 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-21 17:33:26,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:33:26,185 INFO L85 PathProgramCache]: Analyzing trace with hash 112771258, now seen corresponding path program 1 times [2022-11-21 17:33:26,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:33:26,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275581344] [2022-11-21 17:33:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:33:26,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:33:26,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:33:26,186 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:33:26,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_783df714-03d1-4dc6-8b1c-777655af810b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-21 17:33:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:33:26,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-21 17:33:26,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:33:26,551 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 130 treesize of output 126 [2022-11-21 17:33:28,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:28,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 111 [2022-11-21 17:33:28,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 111 [2022-11-21 17:33:29,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:29,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:29,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:29,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:29,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:29,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:29,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:29,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:33:29,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:29,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 78 [2022-11-21 17:33:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:33:29,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:33:30,131 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 280 treesize of output 278 [2022-11-21 17:33:30,143 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 278 treesize of output 276 [2022-11-21 17:33:37,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:37,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:38,341 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:33:38,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 104 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 757 treesize of output 752 [2022-11-21 17:33:38,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 528 treesize of output 418 [2022-11-21 17:33:38,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 418 treesize of output 198 [2022-11-21 17:33:53,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,293 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:33:53,358 INFO L217 Elim1Store]: Index analysis took 175 ms [2022-11-21 17:33:53,844 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:33:53,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 104 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 16 case distinctions, treesize of input 833 treesize of output 828 [2022-11-21 17:33:53,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 603 treesize of output 493 [2022-11-21 17:33:53,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 493 treesize of output 273 [2022-11-21 17:33:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:33:58,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:33:58,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275581344] [2022-11-21 17:33:58,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275581344] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:33:58,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:33:58,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2022-11-21 17:33:58,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62734799] [2022-11-21 17:33:58,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:33:58,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 17:33:58,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:33:58,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 17:33:58,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=549, Unknown=4, NotChecked=0, Total=650 [2022-11-21 17:33:58,614 INFO L87 Difference]: Start difference. First operand 8553 states and 39350 transitions. Second operand has 26 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:34:19,243 WARN L233 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 157 DAG size of output: 154 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:34:32,029 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 128 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:34:43,332 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 126 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:35:19,358 WARN L233 SmtUtils]: Spent 13.40s on a formula simplification. DAG size of input: 196 DAG size of output: 188 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 17:36:02,089 WARN L233 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 180 DAG size of output: 160 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)