./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/array-eq-symm.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_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/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_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/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_563e9ba1-273a-464f-9dca-f2947391fb14/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 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --- 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 14:02:22,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 14:02:22,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 14:02:22,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 14:02:22,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 14:02:22,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 14:02:22,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 14:02:22,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 14:02:22,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 14:02:22,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 14:02:22,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 14:02:22,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 14:02:22,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 14:02:22,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 14:02:22,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 14:02:22,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 14:02:22,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 14:02:22,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 14:02:22,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 14:02:22,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 14:02:22,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 14:02:22,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 14:02:22,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 14:02:22,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 14:02:22,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 14:02:22,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 14:02:22,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 14:02:22,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 14:02:22,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 14:02:22,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 14:02:22,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 14:02:22,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 14:02:22,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 14:02:22,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 14:02:22,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 14:02:22,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 14:02:22,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 14:02:22,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 14:02:22,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 14:02:22,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 14:02:22,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 14:02:22,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 14:02:22,519 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 14:02:22,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 14:02:22,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 14:02:22,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 14:02:22,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 14:02:22,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 14:02:22,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 14:02:22,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 14:02:22,522 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 14:02:22,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 14:02:22,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 14:02:22,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 14:02:22,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 14:02:22,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 14:02:22,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 14:02:22,525 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 14:02:22,525 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 14:02:22,525 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 14:02:22,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 14:02:22,526 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 14:02:22,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 14:02:22,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 14:02:22,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 14:02:22,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 14:02:22,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 14:02:22,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:02:22,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 14:02:22,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 14:02:22,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 14:02:22,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 14:02:22,529 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_563e9ba1-273a-464f-9dca-f2947391fb14/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 [2022-11-21 14:02:22,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 14:02:22,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 14:02:22,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 14:02:22,825 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 14:02:22,828 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 14:02:22,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-11-21 14:02:25,908 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 14:02:26,187 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 14:02:26,187 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-11-21 14:02:26,195 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/data/57f05305d/8bc94d19753940699211c6b225de81f0/FLAGcb60ff550 [2022-11-21 14:02:26,209 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/data/57f05305d/8bc94d19753940699211c6b225de81f0 [2022-11-21 14:02:26,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 14:02:26,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 14:02:26,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 14:02:26,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 14:02:26,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 14:02:26,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:02:26" (1/1) ... [2022-11-21 14:02:26,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7630c1cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:26, skipping insertion in model container [2022-11-21 14:02:26,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:02:26" (1/1) ... [2022-11-21 14:02:26,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 14:02:26,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 14:02:26,452 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_563e9ba1-273a-464f-9dca-f2947391fb14/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-11-21 14:02:26,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:02:26,481 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 14:02:26,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@743495d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:26, skipping insertion in model container [2022-11-21 14:02:26,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 14:02:26,482 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-21 14:02:26,484 INFO L158 Benchmark]: Toolchain (without parser) took 269.22ms. Allocated memory is still 163.6MB. Free memory was 132.1MB in the beginning and 122.4MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 14:02:26,485 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 163.6MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 14:02:26,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.73ms. Allocated memory is still 163.6MB. Free memory was 131.8MB in the beginning and 122.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 14:02:26,487 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 163.6MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.73ms. Allocated memory is still 163.6MB. Free memory was 131.8MB in the beginning and 122.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 94]: 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_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/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_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/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_563e9ba1-273a-464f-9dca-f2947391fb14/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 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --- 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 14:02:28,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 14:02:28,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 14:02:28,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 14:02:28,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 14:02:28,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 14:02:28,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 14:02:28,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 14:02:28,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 14:02:29,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 14:02:29,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 14:02:29,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 14:02:29,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 14:02:29,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 14:02:29,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 14:02:29,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 14:02:29,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 14:02:29,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 14:02:29,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 14:02:29,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 14:02:29,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 14:02:29,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 14:02:29,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 14:02:29,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 14:02:29,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 14:02:29,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 14:02:29,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 14:02:29,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 14:02:29,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 14:02:29,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 14:02:29,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 14:02:29,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 14:02:29,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 14:02:29,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 14:02:29,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 14:02:29,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 14:02:29,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 14:02:29,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 14:02:29,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 14:02:29,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 14:02:29,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 14:02:29,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-21 14:02:29,103 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 14:02:29,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 14:02:29,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 14:02:29,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 14:02:29,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 14:02:29,110 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 14:02:29,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 14:02:29,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 14:02:29,111 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 14:02:29,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 14:02:29,113 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 14:02:29,113 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 14:02:29,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 14:02:29,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 14:02:29,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 14:02:29,115 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 14:02:29,115 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 14:02:29,115 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 14:02:29,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 14:02:29,116 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 14:02:29,116 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 14:02:29,116 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 14:02:29,117 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 14:02:29,117 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 14:02:29,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 14:02:29,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 14:02:29,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 14:02:29,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:02:29,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 14:02:29,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 14:02:29,119 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 14:02:29,119 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 14:02:29,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 14:02:29,120 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_563e9ba1-273a-464f-9dca-f2947391fb14/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 [2022-11-21 14:02:29,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 14:02:29,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 14:02:29,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 14:02:29,636 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 14:02:29,636 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 14:02:29,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-11-21 14:02:32,724 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 14:02:32,995 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 14:02:32,995 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-11-21 14:02:33,003 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/data/428642cae/edc60aaa6d4544f6a58a35e32e65b81c/FLAG82a121627 [2022-11-21 14:02:33,023 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/data/428642cae/edc60aaa6d4544f6a58a35e32e65b81c [2022-11-21 14:02:33,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 14:02:33,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 14:02:33,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 14:02:33,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 14:02:33,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 14:02:33,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:33,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e444fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33, skipping insertion in model container [2022-11-21 14:02:33,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:33,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 14:02:33,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 14:02:33,345 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_563e9ba1-273a-464f-9dca-f2947391fb14/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-11-21 14:02:33,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:02:33,389 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-21 14:02:33,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 14:02:33,418 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_563e9ba1-273a-464f-9dca-f2947391fb14/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-11-21 14:02:33,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:02:33,444 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 14:02:33,482 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_563e9ba1-273a-464f-9dca-f2947391fb14/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-11-21 14:02:33,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:02:33,518 INFO L208 MainTranslator]: Completed translation [2022-11-21 14:02:33,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33 WrapperNode [2022-11-21 14:02:33,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 14:02:33,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 14:02:33,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 14:02:33,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 14:02:33,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:33,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:33,598 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 108 [2022-11-21 14:02:33,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 14:02:33,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 14:02:33,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 14:02:33,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 14:02:33,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:33,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:33,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:33,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:33,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:33,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:33,670 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:33,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:33,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 14:02:33,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 14:02:33,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 14:02:33,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 14:02:33,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33" (1/1) ... [2022-11-21 14:02:33,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:02:33,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:02:33,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 14:02:33,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 14:02:33,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 14:02:33,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 14:02:33,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 14:02:33,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 14:02:33,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 14:02:33,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 14:02:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 14:02:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 14:02:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-21 14:02:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 14:02:33,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 14:02:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 14:02:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-21 14:02:33,810 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 14:02:34,003 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 14:02:34,006 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 14:02:34,551 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 14:02:34,558 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 14:02:34,559 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 14:02:34,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:02:34 BoogieIcfgContainer [2022-11-21 14:02:34,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 14:02:34,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 14:02:34,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 14:02:34,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 14:02:34,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:02:33" (1/3) ... [2022-11-21 14:02:34,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c1c577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:02:34, skipping insertion in model container [2022-11-21 14:02:34,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:33" (2/3) ... [2022-11-21 14:02:34,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c1c577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:02:34, skipping insertion in model container [2022-11-21 14:02:34,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:02:34" (3/3) ... [2022-11-21 14:02:34,569 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2022-11-21 14:02:34,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 14:02:34,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-21 14:02:34,614 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 14:02:34,710 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 14:02:34,752 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 14:02:34,771 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 194 transitions, 404 flow [2022-11-21 14:02:34,776 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 194 transitions, 404 flow [2022-11-21 14:02:34,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 194 transitions, 404 flow [2022-11-21 14:02:34,893 INFO L130 PetriNetUnfolder]: 15/192 cut-off events. [2022-11-21 14:02:34,894 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 14:02:34,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 192 events. 15/192 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 224 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2022-11-21 14:02:34,902 INFO L119 LiptonReduction]: Number of co-enabled transitions 1720 [2022-11-21 14:03:00,374 INFO L134 LiptonReduction]: Checked pairs total: 2579 [2022-11-21 14:03:00,374 INFO L136 LiptonReduction]: Total number of compositions: 214 [2022-11-21 14:03:00,382 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 43 transitions, 102 flow [2022-11-21 14:03:00,425 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 233 states, 131 states have (on average 4.648854961832061) internal successors, (609), 232 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:00,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 14:03:00,450 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;@314e1ec8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 14:03:00,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-11-21 14:03:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 131 states have (on average 4.648854961832061) internal successors, (609), 232 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:00,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 14:03:00,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:00,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 14:03:00,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:00,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:00,465 INFO L85 PathProgramCache]: Analyzing trace with hash 23495, now seen corresponding path program 1 times [2022-11-21 14:03:00,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:00,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632099461] [2022-11-21 14:03:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:00,484 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 14:03:00,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:00,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:00,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:00,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 14:03:00,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:00,768 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 14:03:00,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 14:03:00,808 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 14:03:00,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:00,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:00,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632099461] [2022-11-21 14:03:00,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632099461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:00,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:00,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 14:03:00,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045426284] [2022-11-21 14:03:00,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:00,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 14:03:00,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:00,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 14:03:00,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 14:03:00,844 INFO L87 Difference]: Start difference. First operand has 233 states, 131 states have (on average 4.648854961832061) internal successors, (609), 232 states have internal predecessors, (609), 0 states have call successors, (0), 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 14:03:01,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:01,101 INFO L93 Difference]: Finished difference Result 230 states and 606 transitions. [2022-11-21 14:03:01,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 14:03:01,104 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 14:03:01,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:01,116 INFO L225 Difference]: With dead ends: 230 [2022-11-21 14:03:01,116 INFO L226 Difference]: Without dead ends: 230 [2022-11-21 14:03:01,117 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 14:03:01,120 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:01,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 14:03:01,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-21 14:03:01,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-21 14:03:01,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 131 states have (on average 4.625954198473282) internal successors, (606), 229 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:01,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 606 transitions. [2022-11-21 14:03:01,177 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 606 transitions. Word has length 2 [2022-11-21 14:03:01,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:01,178 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 606 transitions. [2022-11-21 14:03:01,178 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 14:03:01,178 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 606 transitions. [2022-11-21 14:03:01,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 14:03:01,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:01,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 14:03:01,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:01,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:01,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:01,397 INFO L85 PathProgramCache]: Analyzing trace with hash 23496, now seen corresponding path program 1 times [2022-11-21 14:03:01,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:01,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587626592] [2022-11-21 14:03:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:01,398 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 14:03:01,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:01,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:01,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:01,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 14:03:01,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:01,614 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 14:03:01,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 14:03:01,641 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 14:03:01,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:01,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:01,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587626592] [2022-11-21 14:03:01,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587626592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:01,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:01,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 14:03:01,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172343140] [2022-11-21 14:03:01,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:01,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 14:03:01,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:01,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 14:03:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 14:03:01,644 INFO L87 Difference]: Start difference. First operand 230 states and 606 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 14:03:02,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:02,106 INFO L93 Difference]: Finished difference Result 457 states and 1209 transitions. [2022-11-21 14:03:02,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 14:03:02,107 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 14:03:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:02,111 INFO L225 Difference]: With dead ends: 457 [2022-11-21 14:03:02,111 INFO L226 Difference]: Without dead ends: 457 [2022-11-21 14:03:02,111 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 14:03:02,113 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:02,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 14:03:02,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-11-21 14:03:02,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 232. [2022-11-21 14:03:02,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 133 states have (on average 4.601503759398496) internal successors, (612), 231 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 612 transitions. [2022-11-21 14:03:02,161 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 612 transitions. Word has length 2 [2022-11-21 14:03:02,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:02,161 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 612 transitions. [2022-11-21 14:03:02,161 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 14:03:02,162 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 612 transitions. [2022-11-21 14:03:02,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 14:03:02,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:02,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 14:03:02,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:02,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:02,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:02,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:02,375 INFO L85 PathProgramCache]: Analyzing trace with hash 733768, now seen corresponding path program 1 times [2022-11-21 14:03:02,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:02,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524648843] [2022-11-21 14:03:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:02,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:03:02,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:02,383 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:02,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:02,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 14:03:02,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:02,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:03:02,535 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-21 14:03:02,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 33 [2022-11-21 14:03:02,637 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 14:03:02,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-21 14:03:02,651 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 14:03:02,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:02,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:02,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524648843] [2022-11-21 14:03:02,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524648843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:02,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:02,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 14:03:02,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410699111] [2022-11-21 14:03:02,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:02,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 14:03:02,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:02,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 14:03:02,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 14:03:02,656 INFO L87 Difference]: Start difference. First operand 232 states and 612 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 14:03:02,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:02,892 INFO L93 Difference]: Finished difference Result 189 states and 478 transitions. [2022-11-21 14:03:02,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 14:03:02,892 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 14:03:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:02,894 INFO L225 Difference]: With dead ends: 189 [2022-11-21 14:03:02,894 INFO L226 Difference]: Without dead ends: 189 [2022-11-21 14:03:02,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 14:03:02,896 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 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 14:03:02,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 14:03:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-21 14:03:02,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2022-11-21 14:03:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 116 states have (on average 4.120689655172414) internal successors, (478), 188 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 478 transitions. [2022-11-21 14:03:02,907 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 478 transitions. Word has length 3 [2022-11-21 14:03:02,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:02,907 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 478 transitions. [2022-11-21 14:03:02,908 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 14:03:02,908 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 478 transitions. [2022-11-21 14:03:02,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 14:03:02,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:02,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 14:03:02,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:03,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:03,120 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:03,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:03,121 INFO L85 PathProgramCache]: Analyzing trace with hash 733769, now seen corresponding path program 1 times [2022-11-21 14:03:03,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:03,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001407863] [2022-11-21 14:03:03,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:03,121 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 14:03:03,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:03,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:03,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:03,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 14:03:03,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:03,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:03:03,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:03:03,266 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:03:03,266 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 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-21 14:03:03,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-21 14:03:03,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:03:03,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 14:03:03,372 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 14:03:03,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:03,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:03,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001407863] [2022-11-21 14:03:03,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001407863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:03,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:03,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 14:03:03,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285624606] [2022-11-21 14:03:03,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:03,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:03:03,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:03,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:03:03,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:03:03,375 INFO L87 Difference]: Start difference. First operand 189 states and 478 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:03,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:03,623 INFO L93 Difference]: Finished difference Result 146 states and 344 transitions. [2022-11-21 14:03:03,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 14:03:03,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 14:03:03,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:03,625 INFO L225 Difference]: With dead ends: 146 [2022-11-21 14:03:03,625 INFO L226 Difference]: Without dead ends: 146 [2022-11-21 14:03:03,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:03:03,626 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:03,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 14:03:03,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-21 14:03:03,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2022-11-21 14:03:03,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 99 states have (on average 3.474747474747475) internal successors, (344), 145 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:03,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 344 transitions. [2022-11-21 14:03:03,634 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 344 transitions. Word has length 3 [2022-11-21 14:03:03,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:03,635 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 344 transitions. [2022-11-21 14:03:03,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:03,635 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 344 transitions. [2022-11-21 14:03:03,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 14:03:03,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:03,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 14:03:03,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:03,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:03,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:03,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:03,857 INFO L85 PathProgramCache]: Analyzing trace with hash 731815, now seen corresponding path program 1 times [2022-11-21 14:03:03,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:03,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343088064] [2022-11-21 14:03:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:03,858 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 14:03:03,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:03,860 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:03,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:03,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 14:03:03,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:04,010 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 14:03:04,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 14:03:04,079 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 14:03:04,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:03:04,329 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 14:03:04,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:04,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343088064] [2022-11-21 14:03:04,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343088064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:03:04,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:03:04,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-21 14:03:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865192223] [2022-11-21 14:03:04,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:03:04,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:03:04,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:04,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:03:04,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:03:04,331 INFO L87 Difference]: Start difference. First operand 146 states and 344 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 14:03:05,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:05,725 INFO L93 Difference]: Finished difference Result 430 states and 1022 transitions. [2022-11-21 14:03:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 14:03:05,726 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 14:03:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:05,729 INFO L225 Difference]: With dead ends: 430 [2022-11-21 14:03:05,730 INFO L226 Difference]: Without dead ends: 430 [2022-11-21 14:03:05,730 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 14:03:05,731 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 217 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:05,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 0 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 14:03:05,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-11-21 14:03:05,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 152. [2022-11-21 14:03:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 105 states have (on average 3.3904761904761904) internal successors, (356), 151 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 356 transitions. [2022-11-21 14:03:05,742 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 356 transitions. Word has length 3 [2022-11-21 14:03:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:05,743 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 356 transitions. [2022-11-21 14:03:05,743 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 14:03:05,743 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 356 transitions. [2022-11-21 14:03:05,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 14:03:05,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:05,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 14:03:05,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:05,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:05,957 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash 705165826, now seen corresponding path program 1 times [2022-11-21 14:03:05,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:05,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902761963] [2022-11-21 14:03:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:05,958 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 14:03:05,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:05,960 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:05,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:06,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 14:03:06,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:06,131 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 14:03:06,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:06,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:06,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902761963] [2022-11-21 14:03:06,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902761963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:06,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:06,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 14:03:06,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866401538] [2022-11-21 14:03:06,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:06,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:03:06,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:06,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:03:06,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:03:06,135 INFO L87 Difference]: Start difference. First operand 152 states and 356 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:06,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:06,547 INFO L93 Difference]: Finished difference Result 217 states and 478 transitions. [2022-11-21 14:03:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:03:06,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-21 14:03:06,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:06,550 INFO L225 Difference]: With dead ends: 217 [2022-11-21 14:03:06,550 INFO L226 Difference]: Without dead ends: 217 [2022-11-21 14:03:06,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:03:06,551 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:06,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 14:03:06,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-21 14:03:06,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 174. [2022-11-21 14:03:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 127 states have (on average 3.1968503937007875) internal successors, (406), 173 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 406 transitions. [2022-11-21 14:03:06,558 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 406 transitions. Word has length 5 [2022-11-21 14:03:06,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:06,559 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 406 transitions. [2022-11-21 14:03:06,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:06,560 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 406 transitions. [2022-11-21 14:03:06,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 14:03:06,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:06,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 14:03:06,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:06,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:06,764 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:06,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:06,765 INFO L85 PathProgramCache]: Analyzing trace with hash 705165960, now seen corresponding path program 1 times [2022-11-21 14:03:06,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:06,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261835091] [2022-11-21 14:03:06,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:06,765 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 14:03:06,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:06,766 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:06,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:06,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 14:03:06,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:06,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:03:06,925 INFO L321 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-11-21 14:03:06,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2022-11-21 14:03:06,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-11-21 14:03:06,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:03:07,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 14:03:07,069 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 14:03:07,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:07,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:07,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261835091] [2022-11-21 14:03:07,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261835091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:07,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:07,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 14:03:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874108405] [2022-11-21 14:03:07,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:07,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:03:07,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:07,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:03:07,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:03:07,072 INFO L87 Difference]: Start difference. First operand 174 states and 406 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:07,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:07,349 INFO L93 Difference]: Finished difference Result 160 states and 377 transitions. [2022-11-21 14:03:07,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 14:03:07,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-21 14:03:07,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:07,351 INFO L225 Difference]: With dead ends: 160 [2022-11-21 14:03:07,351 INFO L226 Difference]: Without dead ends: 160 [2022-11-21 14:03:07,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:03:07,352 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:07,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 14:03:07,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-21 14:03:07,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-11-21 14:03:07,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 123 states have (on average 3.065040650406504) internal successors, (377), 159 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:07,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 377 transitions. [2022-11-21 14:03:07,359 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 377 transitions. Word has length 5 [2022-11-21 14:03:07,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:07,360 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 377 transitions. [2022-11-21 14:03:07,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:07,360 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 377 transitions. [2022-11-21 14:03:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 14:03:07,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:07,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 14:03:07,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:07,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:07,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:07,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash 705165962, now seen corresponding path program 1 times [2022-11-21 14:03:07,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:07,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081669234] [2022-11-21 14:03:07,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:07,563 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 14:03:07,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:07,564 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:07,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:07,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 14:03:07,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:07,686 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-21 14:03:07,686 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 2 case distinctions, treesize of input 26 treesize of output 33 [2022-11-21 14:03:07,736 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 14:03:07,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-21 14:03:07,754 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 14:03:07,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:07,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:07,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081669234] [2022-11-21 14:03:07,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081669234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:07,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:07,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 14:03:07,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746227327] [2022-11-21 14:03:07,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:07,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 14:03:07,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:07,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 14:03:07,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 14:03:07,757 INFO L87 Difference]: Start difference. First operand 160 states and 377 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 14:03:07,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:07,947 INFO L93 Difference]: Finished difference Result 146 states and 348 transitions. [2022-11-21 14:03:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 14:03:07,948 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 14:03:07,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:07,949 INFO L225 Difference]: With dead ends: 146 [2022-11-21 14:03:07,949 INFO L226 Difference]: Without dead ends: 146 [2022-11-21 14:03:07,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 14:03:07,950 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:07,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 14:03:07,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-21 14:03:07,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2022-11-21 14:03:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 119 states have (on average 2.9243697478991595) internal successors, (348), 145 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 348 transitions. [2022-11-21 14:03:07,956 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 348 transitions. Word has length 5 [2022-11-21 14:03:07,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:07,957 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 348 transitions. [2022-11-21 14:03:07,957 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 14:03:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 348 transitions. [2022-11-21 14:03:07,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 14:03:07,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:07,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 14:03:07,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:08,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:08,158 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:08,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:08,159 INFO L85 PathProgramCache]: Analyzing trace with hash 331860675, now seen corresponding path program 1 times [2022-11-21 14:03:08,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:08,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776437431] [2022-11-21 14:03:08,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:08,160 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 14:03:08,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:08,161 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:08,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:08,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 14:03:08,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:08,329 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 14:03:08,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:08,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:08,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776437431] [2022-11-21 14:03:08,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776437431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:08,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:08,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:03:08,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616432938] [2022-11-21 14:03:08,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:08,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 14:03:08,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:08,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 14:03:08,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:03:08,334 INFO L87 Difference]: Start difference. First operand 146 states and 348 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 14:03:08,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:08,860 INFO L93 Difference]: Finished difference Result 316 states and 742 transitions. [2022-11-21 14:03:08,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 14:03:08,861 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 14:03:08,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:08,864 INFO L225 Difference]: With dead ends: 316 [2022-11-21 14:03:08,864 INFO L226 Difference]: Without dead ends: 316 [2022-11-21 14:03:08,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:03:08,866 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:08,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 14:03:08,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-21 14:03:08,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 146. [2022-11-21 14:03:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 119 states have (on average 2.9243697478991595) internal successors, (348), 145 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 348 transitions. [2022-11-21 14:03:08,876 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 348 transitions. Word has length 6 [2022-11-21 14:03:08,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:08,878 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 348 transitions. [2022-11-21 14:03:08,878 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 14:03:08,878 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 348 transitions. [2022-11-21 14:03:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 14:03:08,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:08,879 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-21 14:03:08,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:09,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:09,091 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:09,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:09,092 INFO L85 PathProgramCache]: Analyzing trace with hash 330079112, now seen corresponding path program 2 times [2022-11-21 14:03:09,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:09,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554811456] [2022-11-21 14:03:09,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:03:09,092 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 14:03:09,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:09,094 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:09,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:09,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:03:09,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:03:09,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 14:03:09,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:09,259 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 14:03:09,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 14:03:09,452 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 14:03:09,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:03:10,207 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 14:03:10,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:10,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554811456] [2022-11-21 14:03:10,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554811456] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:03:10,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:03:10,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 14:03:10,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338645584] [2022-11-21 14:03:10,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:03:10,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 14:03:10,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:10,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 14:03:10,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:03:10,210 INFO L87 Difference]: Start difference. First operand 146 states and 348 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 14:03:13,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:03:15,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:03:18,638 WARN L539 Checker$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 14:03:20,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:03:23,655 WARN L539 Checker$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 14:03:26,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:26,324 INFO L93 Difference]: Finished difference Result 1100 states and 2657 transitions. [2022-11-21 14:03:26,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 14:03:26,326 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 14:03:26,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:26,346 INFO L225 Difference]: With dead ends: 1100 [2022-11-21 14:03:26,346 INFO L226 Difference]: Without dead ends: 1100 [2022-11-21 14:03:26,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2022-11-21 14:03:26,347 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 399 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 50 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:26,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 0 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 790 Invalid, 3 Unknown, 0 Unchecked, 14.4s Time] [2022-11-21 14:03:26,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2022-11-21 14:03:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 158. [2022-11-21 14:03:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 131 states have (on average 2.8396946564885495) internal successors, (372), 157 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 372 transitions. [2022-11-21 14:03:26,364 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 372 transitions. Word has length 6 [2022-11-21 14:03:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:26,364 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 372 transitions. [2022-11-21 14:03:26,364 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 14:03:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 372 transitions. [2022-11-21 14:03:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 14:03:26,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:26,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:26,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:26,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:26,578 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:26,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:26,579 INFO L85 PathProgramCache]: Analyzing trace with hash -940328395, now seen corresponding path program 1 times [2022-11-21 14:03:26,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:26,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321711678] [2022-11-21 14:03:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:26,580 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 14:03:26,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:26,581 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:26,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:26,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 14:03:26,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:26,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-21 14:03:26,708 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 14:03:26,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:26,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:26,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321711678] [2022-11-21 14:03:26,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321711678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:26,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:26,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:03:26,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623819168] [2022-11-21 14:03:26,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:26,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:03:26,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:26,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:03:26,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:03:26,711 INFO L87 Difference]: Start difference. First operand 158 states and 372 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 14:03:26,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:26,922 INFO L93 Difference]: Finished difference Result 128 states and 297 transitions. [2022-11-21 14:03:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:03:26,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 14:03:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:26,924 INFO L225 Difference]: With dead ends: 128 [2022-11-21 14:03:26,924 INFO L226 Difference]: Without dead ends: 128 [2022-11-21 14:03:26,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:03:26,924 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:26,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 14:03:26,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-21 14:03:26,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-11-21 14:03:26,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 110 states have (on average 2.7) internal successors, (297), 127 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:26,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 297 transitions. [2022-11-21 14:03:26,929 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 297 transitions. Word has length 7 [2022-11-21 14:03:26,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:26,930 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 297 transitions. [2022-11-21 14:03:26,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 14:03:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 297 transitions. [2022-11-21 14:03:26,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 14:03:26,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:26,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:26,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:27,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:27,140 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:27,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:27,141 INFO L85 PathProgramCache]: Analyzing trace with hash -940328394, now seen corresponding path program 1 times [2022-11-21 14:03:27,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:27,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65185228] [2022-11-21 14:03:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:27,141 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 14:03:27,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:27,142 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:27,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:27,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 14:03:27,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:27,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-21 14:03:27,364 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 14:03:27,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:27,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:27,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65185228] [2022-11-21 14:03:27,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65185228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:27,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:27,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:03:27,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554902805] [2022-11-21 14:03:27,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:27,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 14:03:27,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:27,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 14:03:27,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:03:27,366 INFO L87 Difference]: Start difference. First operand 128 states and 297 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 14:03:27,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:27,759 INFO L93 Difference]: Finished difference Result 194 states and 463 transitions. [2022-11-21 14:03:27,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 14:03:27,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 14:03:27,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:27,761 INFO L225 Difference]: With dead ends: 194 [2022-11-21 14:03:27,762 INFO L226 Difference]: Without dead ends: 194 [2022-11-21 14:03:27,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:03:27,762 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:27,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 14:03:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-21 14:03:27,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 144. [2022-11-21 14:03:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 126 states have (on average 3.0634920634920637) internal successors, (386), 143 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 386 transitions. [2022-11-21 14:03:27,772 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 386 transitions. Word has length 7 [2022-11-21 14:03:27,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:27,772 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 386 transitions. [2022-11-21 14:03:27,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 14:03:27,773 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 386 transitions. [2022-11-21 14:03:27,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 14:03:27,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:27,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:27,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:27,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:27,986 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:27,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:27,987 INFO L85 PathProgramCache]: Analyzing trace with hash -940328359, now seen corresponding path program 1 times [2022-11-21 14:03:27,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:27,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207055318] [2022-11-21 14:03:27,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:27,988 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 14:03:27,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:27,989 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:28,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:28,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 14:03:28,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:28,208 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 14:03:28,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:28,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:28,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207055318] [2022-11-21 14:03:28,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207055318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:28,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:28,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 14:03:28,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205740487] [2022-11-21 14:03:28,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:28,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:03:28,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:28,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:03:28,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:03:28,210 INFO L87 Difference]: Start difference. First operand 144 states and 386 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:28,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:28,562 INFO L93 Difference]: Finished difference Result 164 states and 413 transitions. [2022-11-21 14:03:28,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:03:28,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-21 14:03:28,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:28,564 INFO L225 Difference]: With dead ends: 164 [2022-11-21 14:03:28,564 INFO L226 Difference]: Without dead ends: 164 [2022-11-21 14:03:28,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:03:28,569 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:28,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 14:03:28,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-21 14:03:28,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 155. [2022-11-21 14:03:28,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 137 states have (on average 2.9562043795620436) internal successors, (405), 154 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:28,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 405 transitions. [2022-11-21 14:03:28,577 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 405 transitions. Word has length 7 [2022-11-21 14:03:28,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:28,577 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 405 transitions. [2022-11-21 14:03:28,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:28,578 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 405 transitions. [2022-11-21 14:03:28,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 14:03:28,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:28,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:28,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 14:03:28,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:28,792 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:28,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:28,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1697688354, now seen corresponding path program 1 times [2022-11-21 14:03:28,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:28,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840263465] [2022-11-21 14:03:28,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:28,793 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 14:03:28,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:28,795 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:28,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:28,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 14:03:28,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:29,003 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 14:03:29,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 14:03:29,044 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 14:03:29,045 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-21 14:03:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 14:03:29,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:29,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:29,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840263465] [2022-11-21 14:03:29,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840263465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:29,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:29,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 14:03:29,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784185273] [2022-11-21 14:03:29,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:29,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:03:29,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:29,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:03:29,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 14:03:29,067 INFO L87 Difference]: Start difference. First operand 155 states and 405 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:29,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:29,279 INFO L93 Difference]: Finished difference Result 127 states and 315 transitions. [2022-11-21 14:03:29,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 14:03:29,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-21 14:03:29,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:29,281 INFO L225 Difference]: With dead ends: 127 [2022-11-21 14:03:29,281 INFO L226 Difference]: Without dead ends: 127 [2022-11-21 14:03:29,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:03:29,281 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:29,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 14:03:29,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-21 14:03:29,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-11-21 14:03:29,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 116 states have (on average 2.7155172413793105) internal successors, (315), 126 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 315 transitions. [2022-11-21 14:03:29,286 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 315 transitions. Word has length 7 [2022-11-21 14:03:29,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:29,287 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 315 transitions. [2022-11-21 14:03:29,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:29,287 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 315 transitions. [2022-11-21 14:03:29,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 14:03:29,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:29,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:29,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 14:03:29,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:29,488 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:29,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:29,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1697688355, now seen corresponding path program 1 times [2022-11-21 14:03:29,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:29,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411884472] [2022-11-21 14:03:29,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:29,489 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 14:03:29,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:29,491 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:29,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:29,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 14:03:29,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:29,732 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 14:03:29,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 14:03:29,816 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 14:03:29,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 14:03:29,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:03:29,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-11-21 14:03:29,974 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:03:29,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 14:03:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:03:30,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:03:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:03:32,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:32,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411884472] [2022-11-21 14:03:32,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411884472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:03:32,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:03:32,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-21 14:03:32,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740367334] [2022-11-21 14:03:32,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:03:32,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:03:32,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:32,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:03:32,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:03:32,701 INFO L87 Difference]: Start difference. First operand 127 states and 315 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 14:03:40,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:40,786 INFO L93 Difference]: Finished difference Result 568 states and 1413 transitions. [2022-11-21 14:03:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 14:03:40,788 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 14:03:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:40,791 INFO L225 Difference]: With dead ends: 568 [2022-11-21 14:03:40,791 INFO L226 Difference]: Without dead ends: 568 [2022-11-21 14:03:40,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-11-21 14:03:40,792 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 204 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:40,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 0 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-21 14:03:40,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-11-21 14:03:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 148. [2022-11-21 14:03:40,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 137 states have (on average 2.846715328467153) internal successors, (390), 147 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:40,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 390 transitions. [2022-11-21 14:03:40,803 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 390 transitions. Word has length 7 [2022-11-21 14:03:40,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:40,803 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 390 transitions. [2022-11-21 14:03:40,804 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 14:03:40,804 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 390 transitions. [2022-11-21 14:03:40,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 14:03:40,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:40,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:40,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-21 14:03:41,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:41,019 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:41,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:41,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1697688472, now seen corresponding path program 1 times [2022-11-21 14:03:41,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:41,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878040953] [2022-11-21 14:03:41,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:41,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:03:41,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:41,021 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:41,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:41,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 14:03:41,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:03:41,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:03:41,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-11-21 14:03:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:03:41,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:41,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878040953] [2022-11-21 14:03:41,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878040953] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:03:41,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:03:41,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 14:03:41,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551533314] [2022-11-21 14:03:41,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:03:41,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 14:03:41,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:41,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 14:03:41,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:03:41,520 INFO L87 Difference]: Start difference. First operand 148 states and 390 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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 14:03:42,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:42,689 INFO L93 Difference]: Finished difference Result 356 states and 903 transitions. [2022-11-21 14:03:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:03:42,690 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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 14:03:42,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:42,692 INFO L225 Difference]: With dead ends: 356 [2022-11-21 14:03:42,693 INFO L226 Difference]: Without dead ends: 356 [2022-11-21 14:03:42,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-21 14:03:42,693 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 249 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:42,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 0 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 14:03:42,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-21 14:03:42,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 160. [2022-11-21 14:03:42,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 2.9194630872483223) internal successors, (435), 159 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 435 transitions. [2022-11-21 14:03:42,702 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 435 transitions. Word has length 7 [2022-11-21 14:03:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:42,702 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 435 transitions. [2022-11-21 14:03:42,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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 14:03:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 435 transitions. [2022-11-21 14:03:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 14:03:42,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:42,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:42,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:42,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:42,904 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:42,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:42,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1090674394, now seen corresponding path program 1 times [2022-11-21 14:03:42,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:42,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634847100] [2022-11-21 14:03:42,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:42,905 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 14:03:42,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:42,907 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:42,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:43,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 14:03:43,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:43,115 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 14:03:43,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:43,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:43,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634847100] [2022-11-21 14:03:43,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634847100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:43,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:43,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:03:43,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455016999] [2022-11-21 14:03:43,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:43,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 14:03:43,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:43,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 14:03:43,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:03:43,117 INFO L87 Difference]: Start difference. First operand 160 states and 435 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 14:03:43,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:43,499 INFO L93 Difference]: Finished difference Result 213 states and 514 transitions. [2022-11-21 14:03:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 14:03:43,499 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 14:03:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:43,500 INFO L225 Difference]: With dead ends: 213 [2022-11-21 14:03:43,501 INFO L226 Difference]: Without dead ends: 213 [2022-11-21 14:03:43,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:03:43,502 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:43,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 14:03:43,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-21 14:03:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 149. [2022-11-21 14:03:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 138 states have (on average 2.927536231884058) internal successors, (404), 148 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:43,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 404 transitions. [2022-11-21 14:03:43,508 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 404 transitions. Word has length 8 [2022-11-21 14:03:43,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:43,508 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 404 transitions. [2022-11-21 14:03:43,509 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 14:03:43,509 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 404 transitions. [2022-11-21 14:03:43,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 14:03:43,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:43,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:43,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:43,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:43,723 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:43,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:43,723 INFO L85 PathProgramCache]: Analyzing trace with hash -609043369, now seen corresponding path program 1 times [2022-11-21 14:03:43,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:43,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999082732] [2022-11-21 14:03:43,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:43,724 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 14:03:43,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:43,725 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:43,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:43,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 14:03:43,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:03:43,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:03:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:03:44,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:44,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999082732] [2022-11-21 14:03:44,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999082732] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:03:44,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:03:44,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 14:03:44,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132719109] [2022-11-21 14:03:44,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:03:44,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 14:03:44,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:44,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 14:03:44,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:03:44,208 INFO L87 Difference]: Start difference. First operand 149 states and 404 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:45,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:45,272 INFO L93 Difference]: Finished difference Result 324 states and 801 transitions. [2022-11-21 14:03:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:03:45,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-21 14:03:45,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:45,274 INFO L225 Difference]: With dead ends: 324 [2022-11-21 14:03:45,275 INFO L226 Difference]: Without dead ends: 324 [2022-11-21 14:03:45,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:03:45,275 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 116 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:45,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 0 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 14:03:45,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-21 14:03:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 192. [2022-11-21 14:03:45,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 181 states have (on average 2.994475138121547) internal successors, (542), 191 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:45,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 542 transitions. [2022-11-21 14:03:45,283 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 542 transitions. Word has length 9 [2022-11-21 14:03:45,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:45,283 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 542 transitions. [2022-11-21 14:03:45,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:45,283 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 542 transitions. [2022-11-21 14:03:45,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 14:03:45,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:45,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:45,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:45,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:45,501 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:45,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:45,502 INFO L85 PathProgramCache]: Analyzing trace with hash -608918663, now seen corresponding path program 1 times [2022-11-21 14:03:45,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:45,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623126910] [2022-11-21 14:03:45,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:45,502 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 14:03:45,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:45,504 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:45,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:45,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 14:03:45,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:45,767 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 14:03:45,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 14:03:45,851 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 14:03:45,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 14:03:45,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:03:45,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 14:03:46,002 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:03:46,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 14:03:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:03:46,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:03:48,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:03:48,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:03:48,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623126910] [2022-11-21 14:03:48,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623126910] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:03:48,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:03:48,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-21 14:03:48,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098517976] [2022-11-21 14:03:48,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:03:48,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:03:48,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:03:48,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:03:48,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:03:48,665 INFO L87 Difference]: Start difference. First operand 192 states and 542 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:58,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:58,828 INFO L93 Difference]: Finished difference Result 463 states and 1084 transitions. [2022-11-21 14:03:58,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:03:58,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-21 14:03:58,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:58,832 INFO L225 Difference]: With dead ends: 463 [2022-11-21 14:03:58,832 INFO L226 Difference]: Without dead ends: 463 [2022-11-21 14:03:58,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:03:58,833 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 151 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:58,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 0 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 14:03:58,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-21 14:03:58,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 214. [2022-11-21 14:03:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 203 states have (on average 2.9507389162561575) internal successors, (599), 213 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 599 transitions. [2022-11-21 14:03:58,843 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 599 transitions. Word has length 9 [2022-11-21 14:03:58,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:58,843 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 599 transitions. [2022-11-21 14:03:58,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:03:58,844 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 599 transitions. [2022-11-21 14:03:58,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 14:03:58,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:58,844 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1] [2022-11-21 14:03:58,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:59,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:03:59,058 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:03:59,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:59,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1083802761, now seen corresponding path program 1 times [2022-11-21 14:03:59,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:59,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361875572] [2022-11-21 14:03:59,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:59,059 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 14:03:59,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:59,060 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:59,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:03:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:59,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 14:03:59,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:59,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-21 14:03:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:59,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:04:01,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:04:01,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361875572] [2022-11-21 14:04:01,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361875572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:04:01,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:04:01,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-21 14:04:01,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196406277] [2022-11-21 14:04:01,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:04:01,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 14:04:01,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:04:01,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 14:04:01,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-11-21 14:04:01,673 INFO L87 Difference]: Start difference. First operand 214 states and 599 transitions. Second operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:07,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:04:09,027 WARN L539 Checker$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 14:04:11,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:04:13,032 WARN L539 Checker$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 14:04:15,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:04:17,038 WARN L539 Checker$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 14:04:18,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:04:26,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:26,964 INFO L93 Difference]: Finished difference Result 2621 states and 7796 transitions. [2022-11-21 14:04:26,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 14:04:26,965 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-21 14:04:26,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:26,979 INFO L225 Difference]: With dead ends: 2621 [2022-11-21 14:04:26,979 INFO L226 Difference]: Without dead ends: 2621 [2022-11-21 14:04:26,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2022-11-21 14:04:26,980 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1227 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 124 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:26,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 0 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1525 Invalid, 6 Unknown, 0 Unchecked, 20.0s Time] [2022-11-21 14:04:26,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2022-11-21 14:04:27,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 250. [2022-11-21 14:04:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 239 states have (on average 2.807531380753138) internal successors, (671), 249 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 671 transitions. [2022-11-21 14:04:27,011 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 671 transitions. Word has length 10 [2022-11-21 14:04:27,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:27,011 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 671 transitions. [2022-11-21 14:04:27,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:27,011 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 671 transitions. [2022-11-21 14:04:27,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 14:04:27,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:27,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:27,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:27,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:04:27,224 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:04:27,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:27,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1696606226, now seen corresponding path program 1 times [2022-11-21 14:04:27,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:04:27,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564442126] [2022-11-21 14:04:27,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:27,225 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 14:04:27,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:04:27,226 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:27,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:27,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 14:04:27,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:27,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-21 14:04:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 14:04:27,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 14:04:28,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:04:28,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564442126] [2022-11-21 14:04:28,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564442126] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:04:28,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:04:28,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 14:04:28,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436981379] [2022-11-21 14:04:28,323 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:04:28,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 14:04:28,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:04:28,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 14:04:28,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:04:28,324 INFO L87 Difference]: Start difference. First operand 250 states and 671 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 14:04:30,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:30,579 INFO L93 Difference]: Finished difference Result 470 states and 1299 transitions. [2022-11-21 14:04:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:04:30,580 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 14:04:30,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:30,583 INFO L225 Difference]: With dead ends: 470 [2022-11-21 14:04:30,583 INFO L226 Difference]: Without dead ends: 470 [2022-11-21 14:04:30,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:04:30,584 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 188 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:30,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 0 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 14:04:30,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-11-21 14:04:30,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 316. [2022-11-21 14:04:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 305 states have (on average 3.281967213114754) internal successors, (1001), 315 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 1001 transitions. [2022-11-21 14:04:30,594 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 1001 transitions. Word has length 10 [2022-11-21 14:04:30,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:30,595 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 1001 transitions. [2022-11-21 14:04:30,595 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 14:04:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 1001 transitions. [2022-11-21 14:04:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 14:04:30,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:30,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:30,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:30,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:04:30,808 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:04:30,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1696606191, now seen corresponding path program 1 times [2022-11-21 14:04:30,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:04:30,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611829845] [2022-11-21 14:04:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:30,809 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 14:04:30,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:04:30,810 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:30,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:30,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 14:04:30,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:31,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:04:31,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:04:31,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:04:31,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611829845] [2022-11-21 14:04:31,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611829845] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:04:31,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:04:31,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 14:04:31,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285853174] [2022-11-21 14:04:31,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:04:31,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 14:04:31,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:04:31,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 14:04:31,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:04:31,342 INFO L87 Difference]: Start difference. First operand 316 states and 1001 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 14:04:32,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:32,348 INFO L93 Difference]: Finished difference Result 380 states and 1015 transitions. [2022-11-21 14:04:32,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:04:32,349 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 14:04:32,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:32,351 INFO L225 Difference]: With dead ends: 380 [2022-11-21 14:04:32,352 INFO L226 Difference]: Without dead ends: 380 [2022-11-21 14:04:32,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:04:32,353 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 133 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:32,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 0 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 14:04:32,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-21 14:04:32,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 290. [2022-11-21 14:04:32,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 279 states have (on average 3.1254480286738353) internal successors, (872), 289 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 872 transitions. [2022-11-21 14:04:32,363 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 872 transitions. Word has length 10 [2022-11-21 14:04:32,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:32,363 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 872 transitions. [2022-11-21 14:04:32,364 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 14:04:32,364 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 872 transitions. [2022-11-21 14:04:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 14:04:32,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:32,365 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:32,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:32,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:04:32,577 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:04:32,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:32,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1269449880, now seen corresponding path program 2 times [2022-11-21 14:04:32,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:04:32,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287175087] [2022-11-21 14:04:32,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:04:32,578 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 14:04:32,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:04:32,579 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:32,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:32,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:04:32,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:04:32,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 14:04:32,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:32,810 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-21 14:04:32,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-21 14:04:32,873 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 14:04:32,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 14:04:32,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:04:32,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 14:04:32,991 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:04:32,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 14:04:33,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:04:33,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:33,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:04:33,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:04:33,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287175087] [2022-11-21 14:04:33,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287175087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:04:33,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:04:33,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 14:04:33,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328692521] [2022-11-21 14:04:33,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:04:33,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 14:04:33,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:04:33,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 14:04:33,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:04:33,982 INFO L87 Difference]: Start difference. First operand 290 states and 872 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 14:04:37,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:37,348 INFO L93 Difference]: Finished difference Result 871 states and 2511 transitions. [2022-11-21 14:04:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:04:37,349 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 14:04:37,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:37,354 INFO L225 Difference]: With dead ends: 871 [2022-11-21 14:04:37,354 INFO L226 Difference]: Without dead ends: 871 [2022-11-21 14:04:37,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-21 14:04:37,355 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 287 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:37,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 0 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 14:04:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-21 14:04:37,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 320. [2022-11-21 14:04:37,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 309 states have (on average 3.2394822006472492) internal successors, (1001), 319 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:37,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 1001 transitions. [2022-11-21 14:04:37,370 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 1001 transitions. Word has length 10 [2022-11-21 14:04:37,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:37,370 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 1001 transitions. [2022-11-21 14:04:37,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 14:04:37,371 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 1001 transitions. [2022-11-21 14:04:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 14:04:37,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:37,376 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:37,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:37,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:04:37,588 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:04:37,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:37,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1269449997, now seen corresponding path program 1 times [2022-11-21 14:04:37,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:04:37,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046445697] [2022-11-21 14:04:37,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:37,590 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 14:04:37,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:04:37,591 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:37,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:37,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 14:04:37,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:37,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-21 14:04:37,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 14:04:37,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 14:04:38,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:04:38,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046445697] [2022-11-21 14:04:38,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046445697] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:04:38,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:04:38,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 14:04:38,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600518077] [2022-11-21 14:04:38,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:04:38,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 14:04:38,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:04:38,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 14:04:38,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:04:38,974 INFO L87 Difference]: Start difference. First operand 320 states and 1001 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:41,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:41,189 INFO L93 Difference]: Finished difference Result 688 states and 2099 transitions. [2022-11-21 14:04:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:04:41,190 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-21 14:04:41,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:41,192 INFO L225 Difference]: With dead ends: 688 [2022-11-21 14:04:41,193 INFO L226 Difference]: Without dead ends: 688 [2022-11-21 14:04:41,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:04:41,193 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 249 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:41,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 0 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 14:04:41,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-11-21 14:04:41,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 408. [2022-11-21 14:04:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 397 states have (on average 3.513853904282116) internal successors, (1395), 407 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1395 transitions. [2022-11-21 14:04:41,208 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1395 transitions. Word has length 10 [2022-11-21 14:04:41,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:41,208 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 1395 transitions. [2022-11-21 14:04:41,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:41,208 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1395 transitions. [2022-11-21 14:04:41,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 14:04:41,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:41,209 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:41,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:41,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:04:41,422 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:04:41,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:41,422 INFO L85 PathProgramCache]: Analyzing trace with hash 702109680, now seen corresponding path program 2 times [2022-11-21 14:04:41,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:04:41,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470479534] [2022-11-21 14:04:41,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:04:41,423 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 14:04:41,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:04:41,424 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:41,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:41,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:04:41,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:04:41,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 14:04:41,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:41,719 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-21 14:04:41,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-21 14:04:41,800 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 14:04:41,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 14:04:41,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:04:41,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 14:04:41,930 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:04:41,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 14:04:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:04:42,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:45,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:04:45,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:04:45,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470479534] [2022-11-21 14:04:45,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470479534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:04:45,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:04:45,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 14:04:45,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140435360] [2022-11-21 14:04:45,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:04:45,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 14:04:45,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:04:45,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 14:04:45,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:04:45,016 INFO L87 Difference]: Start difference. First operand 408 states and 1395 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 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 14:04:48,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:48,073 INFO L93 Difference]: Finished difference Result 769 states and 2271 transitions. [2022-11-21 14:04:48,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 14:04:48,074 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-21 14:04:48,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:48,078 INFO L225 Difference]: With dead ends: 769 [2022-11-21 14:04:48,078 INFO L226 Difference]: Without dead ends: 769 [2022-11-21 14:04:48,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:04:48,079 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 268 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:48,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 0 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-21 14:04:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-11-21 14:04:48,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 340. [2022-11-21 14:04:48,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 329 states have (on average 3.43161094224924) internal successors, (1129), 339 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:04:48,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1129 transitions. [2022-11-21 14:04:48,091 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1129 transitions. Word has length 11 [2022-11-21 14:04:48,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:48,092 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 1129 transitions. [2022-11-21 14:04:48,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 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 14:04:48,092 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1129 transitions. [2022-11-21 14:04:48,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 14:04:48,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:48,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:48,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-21 14:04:48,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:04:48,306 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:04:48,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash 170642572, now seen corresponding path program 3 times [2022-11-21 14:04:48,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:04:48,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054005750] [2022-11-21 14:04:48,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 14:04:48,307 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 14:04:48,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:04:48,309 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:48,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:04:48,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 14:04:48,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:04:48,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-21 14:04:48,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:48,552 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 14:04:48,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 14:04:48,622 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 14:04:48,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 14:04:48,803 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2022-11-21 14:04:48,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-11-21 14:04:48,855 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:04:48,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 14:04:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 14:04:49,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:04:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 14:04:53,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:04:53,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054005750] [2022-11-21 14:04:53,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054005750] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:04:53,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:04:53,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2022-11-21 14:04:53,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657267151] [2022-11-21 14:04:53,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:04:53,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 14:04:53,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:04:53,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 14:04:53,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:04:53,565 INFO L87 Difference]: Start difference. First operand 340 states and 1129 transitions. Second operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:05:03,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 14:05:25,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 14:05:28,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:28,588 INFO L93 Difference]: Finished difference Result 1757 states and 5832 transitions. [2022-11-21 14:05:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 14:05:28,592 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-21 14:05:28,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:28,598 INFO L225 Difference]: With dead ends: 1757 [2022-11-21 14:05:28,598 INFO L226 Difference]: Without dead ends: 1755 [2022-11-21 14:05:28,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=201, Invalid=855, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 14:05:28,599 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 409 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 48 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:28,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 0 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 996 Invalid, 2 Unknown, 0 Unchecked, 16.9s Time] [2022-11-21 14:05:28,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2022-11-21 14:05:28,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 568. [2022-11-21 14:05:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 556 states have (on average 3.652877697841727) internal successors, (2031), 567 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:05:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 2031 transitions. [2022-11-21 14:05:28,624 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 2031 transitions. Word has length 12 [2022-11-21 14:05:28,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:28,624 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 2031 transitions. [2022-11-21 14:05:28,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:05:28,625 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 2031 transitions. [2022-11-21 14:05:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 14:05:28,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:28,626 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-21 14:05:28,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:05:28,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:05:28,839 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:05:28,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:28,839 INFO L85 PathProgramCache]: Analyzing trace with hash -756877528, now seen corresponding path program 3 times [2022-11-21 14:05:28,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:05:28,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983994804] [2022-11-21 14:05:28,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 14:05:28,841 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 14:05:28,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:05:28,842 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:05:28,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:05:29,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-21 14:05:29,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:05:29,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 14:05:29,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:05:29,185 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 14:05:29,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 14:05:30,078 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 14:05:30,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:05:34,130 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 14:05:34,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:05:34,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983994804] [2022-11-21 14:05:34,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983994804] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:05:34,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:05:34,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-21 14:05:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217728859] [2022-11-21 14:05:34,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:05:34,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 14:05:34,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:05:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 14:05:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-21 14:05:34,132 INFO L87 Difference]: Start difference. First operand 568 states and 2031 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 14:05:48,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:05:50,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:05:52,486 WARN L539 Checker$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 14:05:54,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:05:56,491 WARN L539 Checker$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 14:05:58,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:06:00,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:06:02,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 14:06:04,122 WARN L539 Checker$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 14:06:06,125 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 14:06:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:21,079 INFO L93 Difference]: Finished difference Result 3624 states and 13082 transitions. [2022-11-21 14:06:21,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 14:06:21,083 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 14:06:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:21,108 INFO L225 Difference]: With dead ends: 3624 [2022-11-21 14:06:21,109 INFO L226 Difference]: Without dead ends: 3624 [2022-11-21 14:06:21,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 14:06:21,110 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1399 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2825 mSolverCounterSat, 275 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2825 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:21,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 0 Invalid, 3109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2825 Invalid, 9 Unknown, 0 Unchecked, 30.9s Time] [2022-11-21 14:06:21,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2022-11-21 14:06:21,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 580. [2022-11-21 14:06:21,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 568 states have (on average 3.617957746478873) internal successors, (2055), 579 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:06:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 2055 transitions. [2022-11-21 14:06:21,153 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 2055 transitions. Word has length 12 [2022-11-21 14:06:21,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:21,154 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 2055 transitions. [2022-11-21 14:06:21,154 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 14:06:21,154 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 2055 transitions. [2022-11-21 14:06:21,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 14:06:21,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:21,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:21,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:21,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:06:21,368 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:06:21,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:21,368 INFO L85 PathProgramCache]: Analyzing trace with hash 693368008, now seen corresponding path program 1 times [2022-11-21 14:06:21,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:06:21,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213992111] [2022-11-21 14:06:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:21,369 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 14:06:21,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:06:21,370 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:21,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:21,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 14:06:21,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:06:21,604 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 14:06:21,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:06:21,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:06:21,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213992111] [2022-11-21 14:06:21,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213992111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:21,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:06:21,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 14:06:21,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074751249] [2022-11-21 14:06:21,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:21,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 14:06:21,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:06:21,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 14:06:21,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 14:06:21,607 INFO L87 Difference]: Start difference. First operand 580 states and 2055 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:06:21,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:21,888 INFO L93 Difference]: Finished difference Result 623 states and 2143 transitions. [2022-11-21 14:06:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 14:06:21,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-21 14:06:21,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:21,892 INFO L225 Difference]: With dead ends: 623 [2022-11-21 14:06:21,892 INFO L226 Difference]: Without dead ends: 605 [2022-11-21 14:06:21,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 14:06:21,893 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:21,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 14:06:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-11-21 14:06:21,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2022-11-21 14:06:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 593 states have (on average 3.494097807757167) internal successors, (2072), 604 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:06:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 2072 transitions. [2022-11-21 14:06:21,910 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 2072 transitions. Word has length 13 [2022-11-21 14:06:21,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:21,911 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 2072 transitions. [2022-11-21 14:06:21,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:06:21,911 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 2072 transitions. [2022-11-21 14:06:21,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 14:06:21,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:21,912 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-21 14:06:21,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:22,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:06:22,125 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:06:22,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:22,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1613899861, now seen corresponding path program 4 times [2022-11-21 14:06:22,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:06:22,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73738725] [2022-11-21 14:06:22,127 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 14:06:22,127 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 14:06:22,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:06:22,128 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:22,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:22,357 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 14:06:22,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:06:22,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 14:06:22,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:06:22,483 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 14:06:22,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 14:06:22,651 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 14:06:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 14:06:23,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:06:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 14:06:23,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:06:23,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73738725] [2022-11-21 14:06:23,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73738725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:06:23,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:06:23,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-11-21 14:06:23,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230868006] [2022-11-21 14:06:23,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:06:23,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 14:06:23,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:06:23,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 14:06:23,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:06:23,984 INFO L87 Difference]: Start difference. First operand 605 states and 2072 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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 14:06:27,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:27,059 INFO L93 Difference]: Finished difference Result 868 states and 2794 transitions. [2022-11-21 14:06:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 14:06:27,060 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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 13 [2022-11-21 14:06:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:27,064 INFO L225 Difference]: With dead ends: 868 [2022-11-21 14:06:27,064 INFO L226 Difference]: Without dead ends: 868 [2022-11-21 14:06:27,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-11-21 14:06:27,065 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 229 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:27,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 0 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-21 14:06:27,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-11-21 14:06:27,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 709. [2022-11-21 14:06:27,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 697 states have (on average 3.513629842180775) internal successors, (2449), 708 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:06:27,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 2449 transitions. [2022-11-21 14:06:27,085 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 2449 transitions. Word has length 13 [2022-11-21 14:06:27,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:27,086 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 2449 transitions. [2022-11-21 14:06:27,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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 14:06:27,086 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 2449 transitions. [2022-11-21 14:06:27,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 14:06:27,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:27,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:27,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-21 14:06:27,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:06:27,292 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:06:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:27,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1493975655, now seen corresponding path program 3 times [2022-11-21 14:06:27,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:06:27,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527031379] [2022-11-21 14:06:27,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 14:06:27,293 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 14:06:27,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:06:27,294 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:27,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:27,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 14:06:27,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:06:27,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 14:06:27,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:06:27,625 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 14:06:27,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 14:06:27,750 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 14:06:27,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 14:06:27,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:27,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 14:06:27,945 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:06:27,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 14:06:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 14:06:28,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:06:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 14:06:29,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:06:29,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527031379] [2022-11-21 14:06:29,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527031379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:06:29,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:06:29,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-21 14:06:29,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152060429] [2022-11-21 14:06:29,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:06:29,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 14:06:29,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:06:29,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 14:06:29,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:06:29,944 INFO L87 Difference]: Start difference. First operand 709 states and 2449 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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 14:06:32,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:32,808 INFO L93 Difference]: Finished difference Result 1289 states and 4065 transitions. [2022-11-21 14:06:32,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:06:32,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-21 14:06:32,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:32,815 INFO L225 Difference]: With dead ends: 1289 [2022-11-21 14:06:32,815 INFO L226 Difference]: Without dead ends: 1289 [2022-11-21 14:06:32,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:06:32,816 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 197 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:32,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 0 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 14:06:32,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2022-11-21 14:06:32,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 817. [2022-11-21 14:06:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 805 states have (on average 3.6285714285714286) internal successors, (2921), 816 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:06:32,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 2921 transitions. [2022-11-21 14:06:32,842 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 2921 transitions. Word has length 13 [2022-11-21 14:06:32,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:32,843 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 2921 transitions. [2022-11-21 14:06:32,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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 14:06:32,843 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 2921 transitions. [2022-11-21 14:06:32,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 14:06:32,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:32,844 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:06:32,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:33,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:06:33,058 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:06:33,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash 61901079, now seen corresponding path program 2 times [2022-11-21 14:06:33,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:06:33,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855144599] [2022-11-21 14:06:33,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:06:33,059 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 14:06:33,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:06:33,060 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:33,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:33,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:06:33,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:06:33,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 14:06:33,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:06:33,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-21 14:06:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 14:06:33,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:06:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 14:06:35,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:06:35,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855144599] [2022-11-21 14:06:35,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855144599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:06:35,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:06:35,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-21 14:06:35,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132382198] [2022-11-21 14:06:35,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:06:35,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 14:06:35,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:06:35,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 14:06:35,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-21 14:06:35,773 INFO L87 Difference]: Start difference. First operand 817 states and 2921 transitions. Second operand has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:06:43,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:43,816 INFO L93 Difference]: Finished difference Result 1402 states and 4291 transitions. [2022-11-21 14:06:43,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:06:43,817 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-21 14:06:43,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:43,821 INFO L225 Difference]: With dead ends: 1402 [2022-11-21 14:06:43,821 INFO L226 Difference]: Without dead ends: 1396 [2022-11-21 14:06:43,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2022-11-21 14:06:43,822 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 358 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:43,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 0 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-21 14:06:43,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2022-11-21 14:06:43,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 913. [2022-11-21 14:06:43,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 902 states have (on average 3.5687361419068737) internal successors, (3219), 912 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:06:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 3219 transitions. [2022-11-21 14:06:43,861 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 3219 transitions. Word has length 14 [2022-11-21 14:06:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:43,862 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 3219 transitions. [2022-11-21 14:06:43,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:06:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 3219 transitions. [2022-11-21 14:06:43,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 14:06:43,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:43,864 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-21 14:06:43,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:44,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:06:44,078 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:06:44,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:44,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1135257748, now seen corresponding path program 5 times [2022-11-21 14:06:44,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:06:44,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252987211] [2022-11-21 14:06:44,079 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 14:06:44,079 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 14:06:44,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:06:44,080 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:44,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:44,335 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-21 14:06:44,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:06:44,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 14:06:44,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:06:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 14:06:44,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:06:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 14:06:46,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:06:46,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252987211] [2022-11-21 14:06:46,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252987211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:06:46,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:06:46,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 18 [2022-11-21 14:06:46,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900212550] [2022-11-21 14:06:46,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:06:46,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 14:06:46,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:06:46,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 14:06:46,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-11-21 14:06:46,431 INFO L87 Difference]: Start difference. First operand 913 states and 3219 transitions. Second operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 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 14:06:49,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:49,850 INFO L93 Difference]: Finished difference Result 1473 states and 4714 transitions. [2022-11-21 14:06:49,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 14:06:49,852 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 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 14 [2022-11-21 14:06:49,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:49,856 INFO L225 Difference]: With dead ends: 1473 [2022-11-21 14:06:49,857 INFO L226 Difference]: Without dead ends: 1473 [2022-11-21 14:06:49,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2022-11-21 14:06:49,857 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 327 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:49,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 0 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-21 14:06:49,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2022-11-21 14:06:49,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 767. [2022-11-21 14:06:49,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 756 states have (on average 3.5912698412698414) internal successors, (2715), 766 states have internal predecessors, (2715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:06:49,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 2715 transitions. [2022-11-21 14:06:49,877 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 2715 transitions. Word has length 14 [2022-11-21 14:06:49,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:49,877 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 2715 transitions. [2022-11-21 14:06:49,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 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 14:06:49,878 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 2715 transitions. [2022-11-21 14:06:49,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 14:06:49,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:49,879 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-21 14:06:49,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:50,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:06:50,092 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:06:50,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:50,093 INFO L85 PathProgramCache]: Analyzing trace with hash 852863179, now seen corresponding path program 6 times [2022-11-21 14:06:50,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:06:50,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291652758] [2022-11-21 14:06:50,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 14:06:50,093 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 14:06:50,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:06:50,094 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:50,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:06:50,318 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-21 14:06:50,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:06:50,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 14:06:50,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:06:50,483 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-21 14:06:50,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-21 14:06:50,612 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 14:06:50,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 14:06:50,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:50,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 14:06:50,865 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:06:50,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 14:06:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 14:06:51,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:06:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 14:06:55,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:06:55,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291652758] [2022-11-21 14:06:55,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291652758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:06:55,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:06:55,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2022-11-21 14:06:55,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574556720] [2022-11-21 14:06:55,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:06:55,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 14:06:55,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:06:55,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 14:06:55,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-21 14:06:55,268 INFO L87 Difference]: Start difference. First operand 767 states and 2715 transitions. Second operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:07:09,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:07:09,314 INFO L93 Difference]: Finished difference Result 1839 states and 5457 transitions. [2022-11-21 14:07:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 14:07:09,315 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-21 14:07:09,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:07:09,323 INFO L225 Difference]: With dead ends: 1839 [2022-11-21 14:07:09,323 INFO L226 Difference]: Without dead ends: 1839 [2022-11-21 14:07:09,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-11-21 14:07:09,325 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 277 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1743 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:07:09,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 0 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1743 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-11-21 14:07:09,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2022-11-21 14:07:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 767. [2022-11-21 14:07:09,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 756 states have (on average 3.5462962962962963) internal successors, (2681), 766 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:07:09,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 2681 transitions. [2022-11-21 14:07:09,371 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 2681 transitions. Word has length 15 [2022-11-21 14:07:09,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:07:09,372 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 2681 transitions. [2022-11-21 14:07:09,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:07:09,372 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 2681 transitions. [2022-11-21 14:07:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 14:07:09,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:07:09,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:07:09,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-21 14:07:09,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:07:09,590 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:07:09,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:07:09,590 INFO L85 PathProgramCache]: Analyzing trace with hash 896592000, now seen corresponding path program 1 times [2022-11-21 14:07:09,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:07:09,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961722120] [2022-11-21 14:07:09,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:07:09,590 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 14:07:09,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:07:09,591 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:07:09,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:07:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:09,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 14:07:09,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:07:10,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:07:10,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:07:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:07:11,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:07:11,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961722120] [2022-11-21 14:07:11,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961722120] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:07:11,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:07:11,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-21 14:07:11,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241206215] [2022-11-21 14:07:11,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:07:11,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 14:07:11,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:07:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 14:07:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:07:11,022 INFO L87 Difference]: Start difference. First operand 767 states and 2681 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:07:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:07:15,083 INFO L93 Difference]: Finished difference Result 1073 states and 3375 transitions. [2022-11-21 14:07:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:07:15,084 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-21 14:07:15,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:07:15,088 INFO L225 Difference]: With dead ends: 1073 [2022-11-21 14:07:15,088 INFO L226 Difference]: Without dead ends: 1073 [2022-11-21 14:07:15,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2022-11-21 14:07:15,089 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 152 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:07:15,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 0 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 14:07:15,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-11-21 14:07:15,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 778. [2022-11-21 14:07:15,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 767 states have (on average 3.5254237288135593) internal successors, (2704), 777 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:07:15,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 2704 transitions. [2022-11-21 14:07:15,113 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 2704 transitions. Word has length 16 [2022-11-21 14:07:15,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:07:15,113 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 2704 transitions. [2022-11-21 14:07:15,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:07:15,113 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 2704 transitions. [2022-11-21 14:07:15,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 14:07:15,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:07:15,115 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:07:15,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:07:15,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:07:15,328 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:07:15,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:07:15,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1720506062, now seen corresponding path program 3 times [2022-11-21 14:07:15,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:07:15,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982111606] [2022-11-21 14:07:15,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 14:07:15,330 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 14:07:15,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:07:15,331 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:07:15,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:07:15,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 14:07:15,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:07:15,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 14:07:15,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:07:15,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-21 14:07:15,978 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 14:07:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 14:07:16,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:07:17,110 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 14:07:17,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:07:17,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982111606] [2022-11-21 14:07:17,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982111606] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:07:17,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:07:17,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-21 14:07:17,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15593571] [2022-11-21 14:07:17,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:07:17,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 14:07:17,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:07:17,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 14:07:17,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:07:17,112 INFO L87 Difference]: Start difference. First operand 778 states and 2704 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:07:20,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:07:20,041 INFO L93 Difference]: Finished difference Result 1057 states and 3326 transitions. [2022-11-21 14:07:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 14:07:20,042 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-21 14:07:20,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:07:20,045 INFO L225 Difference]: With dead ends: 1057 [2022-11-21 14:07:20,045 INFO L226 Difference]: Without dead ends: 1057 [2022-11-21 14:07:20,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2022-11-21 14:07:20,045 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 232 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-21 14:07:20,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 0 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-21 14:07:20,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-11-21 14:07:20,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 823. [2022-11-21 14:07:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 812 states have (on average 3.5073891625615765) internal successors, (2848), 822 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:07:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 2848 transitions. [2022-11-21 14:07:20,067 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 2848 transitions. Word has length 16 [2022-11-21 14:07:20,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:07:20,067 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 2848 transitions. [2022-11-21 14:07:20,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 14:07:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 2848 transitions. [2022-11-21 14:07:20,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 14:07:20,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:07:20,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:07:20,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:07:20,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.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 14:07:20,272 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-11-21 14:07:20,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:07:20,272 INFO L85 PathProgramCache]: Analyzing trace with hash 328278812, now seen corresponding path program 1 times [2022-11-21 14:07:20,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:07:20,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302931138] [2022-11-21 14:07:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:07:20,273 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 14:07:20,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:07:20,274 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:07:20,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563e9ba1-273a-464f-9dca-f2947391fb14/bin/uautomizer-vX5HgA9Q3a/mathsat -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 14:07:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:20,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-21 14:07:20,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:07:20,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-11-21 14:07:21,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:07:22,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:07:22,103 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-21 14:07:22,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 59 [2022-11-21 14:07:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:07:22,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:07:22,940 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:07:22,940 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 27 [2022-11-21 14:07:23,036 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-21 14:07:23,036 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 17 treesize of output 13 [2022-11-21 14:07:25,083 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (select |c_#memory_int| c_~B~0.base)) (.cse9 (select |c_#memory_int| c_~A~0.base)) (.cse8 (bvmul (_ bv4 32) c_~i_AB~0))) (let ((.cse0 (forall ((~B~0.offset (_ BitVec 32)) (~A~0.offset (_ BitVec 32))) (not (= (concat (concat (concat (select .cse7 (bvadd (_ bv3 32) .cse8 ~B~0.offset)) (select .cse7 (bvadd (_ bv2 32) .cse8 ~B~0.offset))) (select .cse7 (bvadd .cse8 ~B~0.offset (_ bv1 32)))) (select .cse7 (bvadd .cse8 ~B~0.offset))) (concat (concat (concat (select .cse9 (bvadd ~A~0.offset (_ bv3 32) .cse8)) (select .cse9 (bvadd ~A~0.offset (_ bv2 32) .cse8))) (select .cse9 (bvadd ~A~0.offset .cse8 (_ bv1 32)))) (select .cse9 (bvadd ~A~0.offset .cse8)))))))) (and (or .cse0 (bvslt c_~i_BA~0 c_~An~0)) (or (bvslt c_~i_BA~0 c_~Bn~0) .cse0) (forall ((~A~0.offset (_ BitVec 32))) (let ((.cse2 (bvmul (_ bv4 32) c_~i_BA~0))) (let ((.cse1 (bvadd ~A~0.offset .cse2))) (or (not (bvule .cse1 (bvadd (_ bv4 32) ~A~0.offset .cse2))) (forall ((~B~0.offset (_ BitVec 32)) (v_ArrVal_1101 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse3 (bvadd .cse2 ~B~0.offset))) (or (not (bvule .cse3 (bvadd (_ bv4 32) .cse2 ~B~0.offset))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1101))) (= (let ((.cse4 (select .cse5 c_~B~0.base))) (concat (concat (concat (select .cse4 (bvadd (_ bv3 32) .cse2 ~B~0.offset)) (select .cse4 (bvadd (_ bv2 32) .cse2 ~B~0.offset))) (select .cse4 (bvadd .cse2 ~B~0.offset (_ bv1 32)))) (select .cse4 .cse3))) (let ((.cse6 (select .cse5 c_~A~0.base))) (concat (concat (concat (select .cse6 (bvadd ~A~0.offset (_ bv3 32) .cse2)) (select .cse6 (bvadd ~A~0.offset (_ bv2 32) .cse2))) (select .cse6 (bvadd ~A~0.offset .cse2 (_ bv1 32)))) (select .cse6 .cse1))))) (not (= (concat (concat (concat (select .cse7 (bvadd (_ bv3 32) .cse8 ~B~0.offset)) (select .cse7 (bvadd (_ bv2 32) .cse8 ~B~0.offset))) (select .cse7 (bvadd .cse8 ~B~0.offset (_ bv1 32)))) (select .cse7 (bvadd .cse8 ~B~0.offset))) (concat (concat (concat (select .cse9 (bvadd ~A~0.offset (_ bv3 32) .cse8)) (select .cse9 (bvadd ~A~0.offset (_ bv2 32) .cse8))) (select .cse9 (bvadd ~A~0.offset .cse8 (_ bv1 32)))) (select .cse9 (bvadd ~A~0.offset .cse8))))))))))))))) is different from false [2022-11-21 14:07:26,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:07:26,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 342 treesize of output 403 [2022-11-21 14:07:26,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:07:26,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 202 treesize of output 247 [2022-11-21 14:09:20,688 WARN L233 SmtUtils]: Spent 1.85m on a formula simplification. DAG size of input: 374 DAG size of output: 290 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-21 14:09:20,693 INFO L321 Elim1Store]: treesize reduction 336, result has 77.1 percent of original size [2022-11-21 14:09:20,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 12 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 1660 treesize of output 2368 [2022-11-21 14:09:21,309 INFO L217 Elim1Store]: Index analysis took 390 ms [2022-11-21 14:09:22,557 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:09:22,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 1038 treesize of output 758 [2022-11-21 14:09:22,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:22,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:22,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:22,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,333 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:23,948 INFO L217 Elim1Store]: Index analysis took 1113 ms [2022-11-21 14:09:28,996 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 287 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-21 14:09:28,996 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:09:28,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 48 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 72 case distinctions, treesize of input 808 treesize of output 1420